diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Makefile | 8 | ||||
| -rw-r--r-- | src/czx81.c | 2 | ||||
| -rw-r--r-- | src/stream.c | 86 | ||||
| -rw-r--r-- | src/stream.h | 35 | ||||
| -rw-r--r-- | src/z80.c | 394 | ||||
| -rw-r--r-- | src/z80.h | 257 | ||||
| -rw-r--r-- | src/z80_config.h | 59 | ||||
| -rw-r--r-- | src/z80_decode.c | 2533 | ||||
| -rw-r--r-- | src/z80_dis.c | 2494 | ||||
| -rw-r--r-- | src/z80_private.h | 276 |
10 files changed, 6144 insertions, 0 deletions
diff --git a/src/Makefile b/src/Makefile index 8ed3914..8deb3e5 100644 --- a/src/Makefile +++ b/src/Makefile @@ -22,6 +22,10 @@ TARGET=czx81 CURSES=-lncurses OBJS= czx81.o \ + z80.o \ + z80_decode.o \ + z80_dis.o \ + stream.o \ zx81rom.o $(TARGET): $(OBJS) @@ -31,4 +35,8 @@ clean: rm -f $(TARGET) $(OBJS) core czx81.o: czx81.c wide_curses.h +stream.o: stream.c stream.h +z80.o: z80.c z80.h z80_config.h z80_private.h stream.h +z80_decode.o: z80_decode.c z80.h z80_config.h z80_private.h +z80_dis.o: z80_dis.c z80_config.h z80.h z80_private.h zx81rom.o: zx81rom.c zx81rom.h diff --git a/src/czx81.c b/src/czx81.c index ccdceba..58d3bcb 100644 --- a/src/czx81.c +++ b/src/czx81.c @@ -22,6 +22,8 @@ #include <time.h> #include <locale.h> +#include "z80.h" + static long TimeDiff(const struct timespec *start, const struct timespec *end) { diff --git a/src/stream.c b/src/stream.c new file mode 100644 index 0000000..f471d93 --- /dev/null +++ b/src/stream.c @@ -0,0 +1,86 @@ +/* + ds81 - Nintendo DS ZX81 emulator + + Copyright (C) 2006 Ian Cowburn <ianc@noddybox.co.uk> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + ------------------------------------------------------------------------- + + Provides the routines for streaming. + +*/ +#include "stream.h" + +/* The long functions are a tad convuluted, but I'm in a dash. +*/ + +void PUT_Byte(FILE *fp, unsigned char c) +{ + fputc(c, fp); +} + +void PUT_Long(FILE *fp, long l) +{ + union {long l; unsigned char c[4];} u; + + u.l = l; + + fputc(u.c[0], fp); + fputc(u.c[1], fp); + fputc(u.c[2], fp); + fputc(u.c[3], fp); +} + +void PUT_ULong(FILE *fp, unsigned long l) +{ + union {unsigned long l; unsigned char c[4];} u; + + u.l = l; + + fputc(u.c[0], fp); + fputc(u.c[1], fp); + fputc(u.c[2], fp); + fputc(u.c[3], fp); +} + +unsigned char GET_Byte(FILE *fp) +{ + return (unsigned char)fgetc(fp); +} + +long GET_Long(FILE *fp) +{ + union {long l; unsigned char c[4];} u; + + u.c[0] = (unsigned char)fgetc(fp); + u.c[1] = (unsigned char)fgetc(fp); + u.c[2] = (unsigned char)fgetc(fp); + u.c[3] = (unsigned char)fgetc(fp); + + return u.l; +} + +unsigned long GET_ULong(FILE *fp) +{ + union {unsigned long l; unsigned char c[4];} u; + + u.c[0] = (unsigned char)fgetc(fp); + u.c[1] = (unsigned char)fgetc(fp); + u.c[2] = (unsigned char)fgetc(fp); + u.c[3] = (unsigned char)fgetc(fp); + + return u.l; +} diff --git a/src/stream.h b/src/stream.h new file mode 100644 index 0000000..2c3b915 --- /dev/null +++ b/src/stream.h @@ -0,0 +1,35 @@ +/* + ds81 - Nintendo DS ZX81 emulator. + + Copyright (C) 2006 Ian Cowburn <ianc@noddybox.co.uk> + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License + as published by the Free Software Foundation; either version 2 + of the License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + $Id: stream.h 64 2008-12-05 00:37:26Z ianc $ +*/ +#ifndef DS81_STREAM_H +#define DS81_STREAM_H + +#include <stdio.h> + +void PUT_Byte(FILE *fp, unsigned char c); +void PUT_Long(FILE *fp, long l); +void PUT_ULong(FILE *fp, unsigned long l); + +unsigned char GET_Byte(FILE *fp); +long GET_Long(FILE *fp); +unsigned long GET_ULong(FILE *fp); + +#endif /* DS81_STREAM_H */ diff --git a/src/z80.c b/src/z80.c new file mode 100644 index 0000000..da63450 --- /dev/null +++ b/src/z80.c @@ -0,0 +1,394 @@ +/* + + z80 - Z80 Emulator + + Copyright (C) 2006 Ian Cowburn <ianc@noddybox.co.uk> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + ------------------------------------------------------------------------- + + $Id: z80.c 64 2008-12-05 00:37:26Z ianc $ + + Z80 + +*/ +#include <stdlib.h> +#include <string.h> + +#include "z80.h" +#include "z80_private.h" + +#include "stream.h" + +static const char ident[]="$Id: z80.c 64 2008-12-05 00:37:26Z ianc $"; +static const char ident_z80_header[]=Z80_H; +static const char ident_z80_private_header[]=Z80_PRIVATE_H; + +Z80Label *z80_labels=NULL; + +/* ---------------------------------------- PRIVATE FUNCTIONS +*/ +static void InitTables() +{ + static int init=FALSE; + + if (init) + return; + + init=TRUE; + + Z80_InitialiseInternals(); +} + +static void Z80_CheckInterrupt(Z80 *cpu) +{ + /* Check interrupts + */ + if (PRIV->raise) + { + if (PRIV->nmi) + { + if (PRIV->halt) + { + PRIV->halt=FALSE; + CALLBACK(eZ80_Halt,0); + cpu->PC++; + } + + TSTATE(2); + cpu->IFF1=0; + PRIV->nmi=FALSE; + PUSH(cpu->PC); + cpu->PC=0x66; + } + else if (cpu->IFF1) + { + if (PRIV->halt) + { + PRIV->halt=FALSE; + CALLBACK(eZ80_Halt,0); + cpu->PC++; + } + + TSTATE(2); + + cpu->IFF1=0; + cpu->IFF2=0; + + switch(cpu->IM) + { + default: + case 0: + INC_R; + Z80_Decode(cpu,PRIV->devbyte); + return; + break; + + case 1: + PUSH(cpu->PC); + cpu->PC=0x38; + break; + + case 2: + PUSH(cpu->PC); + cpu->PC=(Z80Word)cpu->I*256+PRIV->devbyte; + break; + } + } + + PRIV->raise=FALSE; + } +} + + +/* ---------------------------------------- INTERFACES +*/ + +#ifdef ENABLE_ARRAY_MEMORY +Z80 *Z80Init(Z80ReadPort read_port, + Z80WritePort write_port) +#else +Z80 *Z80Init(Z80ReadMemory read_memory, + Z80WriteMemory write_memory, + Z80ReadPort read_port, + Z80WritePort write_port, + Z80ReadMemory read_for_disassem) +#endif +{ + Z80 *cpu; + int f; + int r; + + InitTables(); + +#ifndef ENABLE_ARRAY_MEMORY + if (!read_memory || !write_memory) + return NULL; +#endif + + cpu=malloc(sizeof *cpu); + + if (cpu) + { + cpu->priv=malloc(sizeof *cpu->priv); + + if (cpu->priv) + { +#ifndef ENABLE_ARRAY_MEMORY + PRIV->mread=read_memory; + PRIV->mwrite=write_memory; + PRIV->disread=read_for_disassem; +#endif + PRIV->pread=read_port; + PRIV->pwrite=write_port; + + for(f=0;f<eZ80_NO_CALLBACK;f++) + for(r=0;r<MAX_PER_CALLBACK;r++) + PRIV->callback[f][r]=NULL; + + Z80Reset(cpu); + } + else + { + free(cpu); + cpu=NULL; + } + } + + return cpu; +} + + +void Z80Reset(Z80 *cpu) +{ + PRIV->cycle=0; + cpu->PC=0; + + cpu->AF.w=0xffff; + cpu->BC.w=0xffff; + cpu->DE.w=0xffff; + cpu->HL.w=0xffff; + cpu->AF_=0xffff; + cpu->BC_=0xffff; + cpu->DE_=0xffff; + cpu->HL_=0xffff; + + cpu->IX.w=0xffff; + cpu->IY.w=0xffff; + + cpu->SP=0xffff; + cpu->IFF1=0; + cpu->IFF2=0; + cpu->IM=0; + cpu->I=0; + cpu->R=0; + PRIV->halt=0; + + PRIV->raise=FALSE; + PRIV->nmi=FALSE; +} + + +Z80Val Z80Cycles(Z80 *cpu) +{ + return PRIV->cycle; +} + + +void Z80ResetCycles(Z80 *cpu, Z80Val cycles) +{ + PRIV->cycle=cycles; +} + + +int Z80LodgeCallback(Z80 *cpu, Z80CallbackReason reason, Z80Callback callback) +{ + int f; + + for(f=0;f<MAX_PER_CALLBACK;f++) + { + if (!PRIV->callback[reason][f]) + { + PRIV->callback[reason][f]=callback; + return TRUE; + } + } + + return FALSE; +} + + +void Z80RemoveCallback(Z80 *cpu, Z80CallbackReason reason, Z80Callback callback) +{ + int f; + + for(f=0;f<MAX_PER_CALLBACK;f++) + { + if (PRIV->callback[reason][f]==callback) + { + PRIV->callback[reason][f]=NULL; + } + } +} + + +void Z80Interrupt(Z80 *cpu, Z80Byte devbyte) +{ + PRIV->raise=TRUE; + PRIV->devbyte=devbyte; + PRIV->nmi=FALSE; +} + + +void Z80NMI(Z80 *cpu) +{ + PRIV->raise=TRUE; + PRIV->nmi=TRUE; +} + + +int Z80SingleStep(Z80 *cpu) +{ + Z80Byte opcode; + + PRIV->last_cb=TRUE; + PRIV->shift=0; + + Z80_CheckInterrupt(cpu); + + CALLBACK(eZ80_Instruction,PRIV->cycle); + + INC_R; + + opcode=FETCH_BYTE; + + Z80_Decode(cpu,opcode); + + return PRIV->last_cb; +} + + +void Z80Exec(Z80 *cpu) +{ + while (Z80SingleStep(cpu)); +} + + +void Z80SetLabels(Z80Label labels[]) +{ + z80_labels=labels; +} + + +const char *Z80Disassemble(Z80 *cpu, Z80Word *pc) +{ +#ifdef ENABLE_DISASSEM + Z80Byte Z80_Dis_FetchByte(Z80 *cpu, Z80Word *pc); + static char s[80]; + Z80Word opc,npc; + Z80Byte op; + int f; + + opc=*pc; + op=Z80_Dis_FetchByte(cpu,pc); + dis_opcode_z80[op](cpu,op,pc); + npc=*pc; + + strcpy(s,Z80_Dis_Printf("%-5s",Z80_Dis_GetOp())); + strcat(s,Z80_Dis_Printf("%-40s ;",Z80_Dis_GetArg())); + + for(f=0;f<5 && opc!=npc;f++) + { +#ifdef ENABLE_ARRAY_MEMORY + strcat(s,Z80_Dis_Printf(" %.2x",(int)Z80_MEMORY[opc++])); +#else + strcat(s,Z80_Dis_Printf(" %.2x",(int)PRIV->disread(cpu,opc++))); +#endif + } + + if (opc!=npc) + for(f=1;f<3;f++) + s[strlen(s)-f]='.'; + + return s; +#else + (*pc)+=4; + return "NO DISASSEMBLER"; +#endif +} + + +void Z80SaveSnapshot(Z80 *cpu, FILE *fp) +{ + PUT_ULong(fp, cpu->PC); + PUT_ULong(fp, cpu->AF.w); + PUT_ULong(fp, cpu->BC.w); + PUT_ULong(fp, cpu->DE.w); + PUT_ULong(fp, cpu->HL.w); + PUT_ULong(fp, cpu->AF_); + PUT_ULong(fp, cpu->BC_); + PUT_ULong(fp, cpu->DE_); + PUT_ULong(fp, cpu->HL_); + PUT_ULong(fp, cpu->IX.w); + PUT_ULong(fp, cpu->IY.w); + PUT_ULong(fp, cpu->SP); + PUT_Byte(fp, cpu->IFF1); + PUT_Byte(fp, cpu->IFF2); + PUT_Byte(fp, cpu->IM); + PUT_Byte(fp, cpu->I); + PUT_Byte(fp, cpu->R); + PUT_Byte(fp, cpu->R); + + PUT_ULong(fp, cpu->priv->cycle); + PUT_Long(fp, cpu->priv->halt); + PUT_Byte(fp, cpu->priv->shift); + PUT_Long(fp, cpu->priv->raise); + PUT_Byte(fp, cpu->priv->devbyte); + PUT_Long(fp, cpu->priv->nmi); + PUT_Long(fp, cpu->priv->last_cb); +} + +void Z80LoadSnapshot(Z80 *cpu, FILE *fp) +{ + cpu->PC = GET_ULong(fp); + cpu->AF.w = GET_ULong(fp); + cpu->BC.w = GET_ULong(fp); + cpu->DE.w = GET_ULong(fp); + cpu->HL.w = GET_ULong(fp); + cpu->AF_ = GET_ULong(fp); + cpu->BC_ = GET_ULong(fp); + cpu->DE_ = GET_ULong(fp); + cpu->HL_ = GET_ULong(fp); + cpu->IX.w = GET_ULong(fp); + cpu->IY.w = GET_ULong(fp); + cpu->SP = GET_ULong(fp); + cpu->IFF1 = GET_Byte(fp); + cpu->IFF2 = GET_Byte(fp); + cpu->IM = GET_Byte(fp); + cpu->I = GET_Byte(fp); + cpu->R = GET_Byte(fp); + cpu->R = GET_Byte(fp); + + cpu->priv->cycle = GET_ULong(fp); + cpu->priv->halt = GET_Long(fp); + cpu->priv->shift = GET_Byte(fp); + cpu->priv->raise = GET_Long(fp); + cpu->priv->devbyte = GET_Byte(fp); + cpu->priv->nmi = GET_Long(fp); + cpu->priv->last_cb = GET_Long(fp); +} + +/* END OF FILE */ diff --git a/src/z80.h b/src/z80.h new file mode 100644 index 0000000..a00c8b0 --- /dev/null +++ b/src/z80.h @@ -0,0 +1,257 @@ +/* + + z80 - Z80 emulation + + Copyright (C) 2006 Ian Cowburn <ianc@noddybox.co.uk> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + ------------------------------------------------------------------------- + + $Id: z80.h 61 2008-11-03 17:07:32Z ianc $ + +*/ + +#ifndef Z80_H +#define Z80_H "$Id: z80.h 61 2008-11-03 17:07:32Z ianc $" + +#include <stdio.h> + +/* Configuration +*/ +#include "z80_config.h" + + +/* ---------------------------------------- TYPES +*/ + +/* Large unsigned type +*/ +typedef unsigned long Z80Val; + + +/* 8-bit type. The emulation will exit with code 2 if this isn't 8 bits. +*/ +typedef unsigned char Z80Byte; + + +/* 8-bit signed type. The emulation will exit with code 2 if this isn't 8 bits. +*/ +typedef signed char Z80Relative; + + +/* 16-bit type. The emulation will exit with code 2 if this isn't 16 bits. +*/ +typedef unsigned short Z80Word; + + +/* A Z80 16-bit register. To access the HI/LO component use the indexes + Z80_HI_WORD and Z80_LO_WORD which will be initialised once Z80Init has been + called. +*/ +typedef union +{ + Z80Word w; + Z80Byte b[2]; +} Z80Reg; + +extern int Z80_HI_WORD; +extern int Z80_LO_WORD; + + +/* The processor +*/ +struct Z80Private; + +typedef struct +{ + Z80Word PC; + + Z80Reg AF; + Z80Reg BC; + Z80Reg DE; + Z80Reg HL; + + Z80Word AF_; + Z80Word BC_; + Z80Word DE_; + Z80Word HL_; + + Z80Reg IX; + Z80Reg IY; + + Z80Word SP; + + Z80Byte IFF1; + Z80Byte IFF2; + Z80Byte IM; + Z80Byte I; + Z80Byte R; + + struct Z80Private *priv; +} Z80; + + +/* Interfaces used to handle memory +*/ +typedef Z80Byte (*Z80ReadMemory)(Z80 *cpu, Z80Word address); +typedef void (*Z80WriteMemory)(Z80 *cpu, Z80Word address, Z80Byte value); + + +/* Interfaces needed to handle ports (IN/OUT commands) +*/ +typedef Z80Byte (*Z80ReadPort)(Z80 *cpu, Z80Word address); +typedef void (*Z80WritePort)(Z80 *cpu, Z80Word address, Z80Byte value); + + +/* Callback. Callback should return TRUE for processing to continue. +*/ +typedef int (*Z80Callback)(Z80 *cpu, Z80Val data); + + +/* Callback reasons + + eZ80_Instruction Called before the initial fetch for an instruction + (called just to once no matter how many bytes the + instruction is made up of). + + eZ80_EDHook Called when an undefined ED opcode is executed. + + eZ80_Halt Called when the HALT instruction is hit and released. + + eZ80_RETI Called when the RETI instruction is executed +*/ +typedef enum +{ + eZ80_Instruction, /* data = no cycles since reset */ + eZ80_EDHook, /* data = byte after ED opcode (only for NOP opcodes) */ + eZ80_Halt, /* data = 1 halt raised, 0 halt cleared by int */ + eZ80_RETI, /* data = ignored */ + eZ80_NO_CALLBACK /* leave at end */ +} Z80CallbackReason; + + +/* Flags in the F register +*/ +typedef enum +{ + eZ80_Carry =0x01, + eZ80_Neg =0x02, + eZ80_PV =0x04, + eZ80_Hidden3 =0x08, + eZ80_HalfCarry =0x10, + eZ80_Hidden5 =0x20, + eZ80_Zero =0x40, + eZ80_Sign =0x80 +} Z80FlagRegister; + + +/* Disassembly label -- only useful if ENABLE_DISASSEMBLER is set. + Labels are stored as an array, where a NULL in the label field marks + the end of the list. +*/ +typedef struct +{ + Z80Word address; + const char *label; +} Z80Label; + + +/* ---------------------------------------- INTERFACES +*/ + + +/* Initialises the processor. +*/ +#ifdef ENABLE_ARRAY_MEMORY +Z80 *Z80Init(Z80ReadPort read_port, + Z80WritePort write_port); +#else +Z80 *Z80Init(Z80ReadMemory read_memory, + Z80WriteMemory write_memory, + Z80ReadPort read_port, + Z80WritePort write_port, + Z80ReadMemory read_for_disassem); +#endif + + +/* Resets the processor. +*/ +void Z80Reset(Z80 *cpu); + + +/* Lodge a callback to be invoked after special events. Returns FALSE + if the callback couldn't be lodged (there is a max of 10 callbacks per + reason). +*/ +int Z80LodgeCallback(Z80 *cpu, + Z80CallbackReason reason, + Z80Callback callback); + + +/* Remove a callback. Does nothing if reason was not lodged with + Z80LodgeCallback() +*/ +void Z80RemoveCallback(Z80 *cpu, + Z80CallbackReason reason, + Z80Callback callback); + + +/* Cause an interrupt before the next opcode. + devbyte is the byte generated by the device (if any). +*/ +void Z80Interrupt(Z80 *cpu, Z80Byte devbyte); + + +/* Cause an NMI +*/ +void Z80NMI(Z80 *cpu); + + +/* Execute a single instruction. Returns FALSE if any callback returned + FALSE. +*/ +int Z80SingleStep(Z80 *cpu); + + +/* Executes until a callback returns FALSE (never returns otherwise) +*/ +void Z80Exec(Z80 *cpu); + + +/* Manipulate the cylce count of the Z80 +*/ +Z80Val Z80Cycles(Z80 *cpu); +void Z80ResetCycles(Z80 *cpu, Z80Val cycles); + + +/* Set address to label mappings for the disassembler +*/ +void Z80SetLabels(Z80Label labels[]); + + +/* Simple disassembly of memory accessed through read_for_disassem, or + Z80_MEMORY as appropriate. addr is updated on exit. +*/ +const char *Z80Disassemble(Z80 *cpu, Z80Word *addr); + +/* Allows the CPU state to be saved/loaded from a stream +*/ +void Z80SaveSnapshot(Z80 *cpu, FILE *fp); +void Z80LoadSnapshot(Z80 *cpu, FILE *fp); + +#endif + +/* END OF FILE */ diff --git a/src/z80_config.h b/src/z80_config.h new file mode 100644 index 0000000..467a789 --- /dev/null +++ b/src/z80_config.h @@ -0,0 +1,59 @@ +/* + + z80 - Z80 emulation + + Copyright (C) 2006 Ian Cowburn <ianc@noddybox.co.uk> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + ------------------------------------------------------------------------- + + $Id: z80_config.h 41 2007-03-01 00:36:54Z ianc $ + +*/ + +#ifndef Z80_CONFIG_H +#define Z80_CONFIG_H "$Id: z80_config.h 41 2007-03-01 00:36:54Z ianc $" + + +/* This file defines various compile-time configuration options + for the Z80 emulation +*/ + + +/* Define this to enable the disassembly interface +*/ +#define ENABLE_DISASSEM + + +/* Define this to enable the array-based memory model. In this mode + an externally visible Z80Byte array called Z80_MEMORY must be + defined. The macros RAMBOT and RAMTOP define the writable area of + memory and must be changed accordingly. + + In this mode the signature of Z80Init changes so that the memory functions + are not passed. ALL processor instances share the same memory. +#define ENABLE_ARRAY_MEMORY +*/ + +#ifdef ENABLE_ARRAY_MEMORY +#define RAMBOT 0x0000 +#define RAMTOP 0xffff +#endif + + +#endif + +/* END OF FILE */ diff --git a/src/z80_decode.c b/src/z80_decode.c new file mode 100644 index 0000000..992e1d1 --- /dev/null +++ b/src/z80_decode.c @@ -0,0 +1,2533 @@ +/* + + z80 - Z80 Emulator + + Copyright (C) 2006 Ian Cowburn <ianc@noddybox.co.uk> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + ------------------------------------------------------------------------- + + $Id: z80_decode.c 4 2006-10-04 23:05:43Z ianc $ + +*/ +#include <stdlib.h> +#include <limits.h> + +#include "z80.h" +#include "z80_private.h" + +static const char ident[]="$Id: z80_decode.c 4 2006-10-04 23:05:43Z ianc $"; + +/* ---------------------------------------- TABLES AND INIT +*/ +static Z80Byte PSZtable[512]; +static Z80Byte SZtable[512]; +static Z80Byte Ptable[512]; +static Z80Byte Stable[512]; +static Z80Byte Ztable[512]; + + +int Z80_HI_WORD; +int Z80_LO_WORD; + +#define HI Z80_HI_WORD +#define LO Z80_LO_WORD + +/* ---------------------------------------- MISC FUNCTIONS +*/ +void Z80_InitialiseInternals(void) +{ + Z80Word f; + Z80Reg r; + + /* Check endianness + */ + r.w=0x1234; + + if (r.b[0] == 0x12) + { + HI=0; + LO=1; + } + else if (r.b[1] == 0x12) + { + HI=1; + LO=0; + } + else + { + exit(1); + } + + /* Check variable sizes + */ + if (CHAR_BIT!=8 || sizeof(Z80Word)!=2) + { + exit(2); + } + + /* Initialise flag tables + */ + for(f=0;f<256;f++) + { + Z80Byte p,z,s; + int b; + + p=0; + + for(b=0;b<8;b++) + if (f&(1<<b)) + p++; + + if (p&1) + p=0; + else + p=P_Z80; + + if (f) + z=0; + else + z=Z_Z80; + + if (f&0x80) + s=S_Z80; + else + s=0; + + Ptable[f]=p; + Stable[f]=s; + Ztable[f]=z; + SZtable[f]=z|s; + PSZtable[f]=z|s|p; + + Ptable[f+256]=Ptable[f]|C_Z80; + Stable[f+256]=Stable[f]|C_Z80; + Ztable[f+256]=Ztable[f]|C_Z80; + SZtable[f+256]=SZtable[f]|C_Z80; + PSZtable[f+256]=PSZtable[f]|C_Z80; + } +} + +#ifndef ENABLE_ARRAY_MEMORY +static Z80Word FPEEKW(Z80 *cpu, Z80Word addr) +{ + return (PEEK(addr) | (Z80Word)PEEK(addr+1)<<8); +} + + +static void FPOKEW(Z80 *cpu, Z80Word addr, Z80Word val) +{ + PRIV->mwrite(cpu,addr,val); + PRIV->mwrite(cpu,addr+1,val>>8); +} +#endif + + +/* ---------------------------------------- GENERAL MACROS +*/ +#define SWAP(A,B) \ +do { \ + unsigned swap_tmp; \ + swap_tmp=A; \ + A=B; \ + B=swap_tmp; \ +} while(0) + + +/* ---------------------------------------- ARITHMETIC OPS +*/ +#define ADD8(ONCE) \ +do { \ + Z80Byte VAL=ONCE; \ + unsigned w; \ + w=cpu->AF.b[HI]+(unsigned)VAL; \ + cpu->AF.b[LO]=SZtable[w]; \ + if ((cpu->AF.b[HI]^w^VAL)&H_Z80) cpu->AF.b[LO]|=H_Z80; \ + if ((VAL^cpu->AF.b[HI]^0x80)&(VAL^w)&0x80) cpu->AF.b[LO]|=P_Z80; \ + SETHIDDEN(w); \ + cpu->AF.b[HI]=w; \ +} while(0) + + +#define ADC8(ONCE) \ +do { \ + Z80Byte VAL=ONCE; \ + unsigned w; \ + w=(cpu->AF.b[HI]+(unsigned)VAL+CARRY)&0x1ff; \ + cpu->AF.b[LO]=SZtable[w]; \ + if ((cpu->AF.b[HI]^w^VAL)&H_Z80) cpu->AF.b[LO]|=H_Z80; \ + if ((VAL^cpu->AF.b[HI]^0x80)&(VAL^w)&0x80) cpu->AF.b[LO]|=P_Z80; \ + SETHIDDEN(w); \ + cpu->AF.b[HI]=w; \ +} while(0) + + +#define SUB8(ONCE) \ +do { \ + Z80Byte VAL=ONCE; \ + unsigned w; \ + w=(cpu->AF.b[HI]-(unsigned)VAL)&0x1ff; \ + cpu->AF.b[LO]=SZtable[w]|N_Z80; \ + if ((cpu->AF.b[HI]^w^VAL)&H_Z80) cpu->AF.b[LO]|=H_Z80; \ + if ((VAL^cpu->AF.b[HI])&(cpu->AF.b[HI]^w)&0x80) cpu->AF.b[LO]|=P_Z80; \ + SETHIDDEN(w); \ + cpu->AF.b[HI]=w; \ +} while(0) + + +#define CMP8(ONCE) \ +do { \ + Z80Byte VAL=ONCE; \ + unsigned w; \ + w=(cpu->AF.b[HI]-(unsigned)VAL)&0x1ff; \ + cpu->AF.b[LO]=SZtable[w]|N_Z80; \ + if ((cpu->AF.b[HI]^w^VAL)&H_Z80) cpu->AF.b[LO]|=H_Z80; \ + if ((VAL^cpu->AF.b[HI])&(cpu->AF.b[HI]^w)&0x80) cpu->AF.b[LO]|=P_Z80; \ + SETHIDDEN(VAL); \ +} while(0) + + +#define SBC8(ONCE) \ +do { \ + Z80Byte VAL=ONCE; \ + unsigned w; \ + w=(cpu->AF.b[HI]-(unsigned)VAL-CARRY)&0x1ff; \ + cpu->AF.b[LO]=SZtable[w]|N_Z80; \ + if ((cpu->AF.b[HI]^w^VAL)&H_Z80) cpu->AF.b[LO]|=H_Z80; \ + if ((VAL^cpu->AF.b[HI])&(cpu->AF.b[HI]^w)&0x80) cpu->AF.b[LO]|=P_Z80; \ + SETHIDDEN(w); \ + cpu->AF.b[HI]=w; \ +} while(0) + + +#define ADD16(REG,ONCE) \ +do { \ + Z80Word VAL=ONCE; \ + Z80Val w; \ + w=(REG)+(Z80Val)VAL; \ + cpu->AF.b[LO]&=(S_Z80|Z_Z80|V_Z80); \ + if (w>0xffff) cpu->AF.b[LO]|=C_Z80; \ + if (((REG)^w^VAL)&0x1000) cpu->AF.b[LO]|=H_Z80; \ + SETHIDDEN(w>>8); \ + (REG)=w; \ +} while(0) + + +#define ADC16(REG, ONCE) \ +do { \ + Z80Word VAL=ONCE; \ + Z80Val w; \ + w=(REG)+(Z80Val)VAL+CARRY; \ + cpu->AF.b[LO]=0; \ + if ((w&0xffff)==0) cpu->AF.b[LO]=Z_Z80; \ + if (w&0x8000) cpu->AF.b[LO]|=S_Z80; \ + if (w>0xffff) cpu->AF.b[LO]|=C_Z80; \ + if ((VAL^(REG)^0x8000)&((REG)^w)&0x8000) cpu->AF.b[LO]|=P_Z80; \ + if (((REG)^w^VAL)&0x1000) cpu->AF.b[LO]|=H_Z80; \ + SETHIDDEN(w>>8); \ + (REG)=w; \ +} while(0) + + +#define SBC16(REG, ONCE) \ +do { \ + Z80Word VAL=ONCE; \ + Z80Val w; \ + w=(REG)-(Z80Val)VAL-CARRY; \ + cpu->AF.b[LO]=N_Z80; \ + if (w&0x8000) cpu->AF.b[LO]|=S_Z80; \ + if ((w&0xffff)==0) cpu->AF.b[LO]|=Z_Z80; \ + if (w>0xffff) cpu->AF.b[LO]|=C_Z80; \ + if ((VAL^(REG))&((REG)^w)&0x8000) cpu->AF.b[LO]|=P_Z80; \ + if (((REG)^w^VAL)&0x1000) cpu->AF.b[LO]|=H_Z80; \ + SETHIDDEN(w>>8); \ + (REG)=w; \ +} while(0) + + +#define INC8(REG) \ +do { \ + (REG)++; \ + cpu->AF.b[LO]=CARRY|SZtable[(REG)]; \ + if ((REG)==0x80) cpu->AF.b[LO]|=P_Z80; \ + if (((REG)&0x0f)==0) cpu->AF.b[LO]|=H_Z80; \ +} while(0) + + +#define DEC8(REG) \ +do { \ + (REG)--; \ + cpu->AF.b[LO]=N_Z80|CARRY; \ + if ((REG)==0x7f) cpu->AF.b[LO]|=P_Z80; \ + if (((REG)&0x0f)==0x0f) cpu->AF.b[LO]|=H_Z80; \ + cpu->AF.b[LO]|=SZtable[(REG)]; \ +} while(0) + + +#define OP_ON_MEM(OP,addr) \ +do { \ + Z80Byte memop=PEEK(addr); \ + OP(memop); \ + POKE(addr,memop); \ +} while(0) + + +#define OP_ON_MEM_WITH_ARG(OP,addr,arg) \ +do { \ + Z80Byte memop=PEEK(addr); \ + OP(memop,arg); \ + POKE(addr,memop); \ +} while(0) + + +#define OP_ON_MEM_WITH_COPY(OP,addr,copy) \ +do { \ + Z80Byte memop=PEEK(addr); \ + OP(memop); \ + copy=memop; \ + POKE(addr,memop); \ +} while(0) + + +#define OP_ON_MEM_WITH_ARG_AND_COPY(OP,addr,arg,copy) \ +do { \ + Z80Byte memop=PEEK(addr); \ + OP(memop,arg); \ + copy=memop; \ + POKE(addr,memop); \ +} while(0) + + +/* ---------------------------------------- ROTATE AND SHIFT OPS +*/ +#define RRCA \ +do { \ + cpu->AF.b[LO]=(cpu->AF.b[LO]&(S_Z80|Z_Z80|P_Z80))|(cpu->AF.b[HI]&C_Z80); \ + cpu->AF.b[HI]=(cpu->AF.b[HI]>>1)|(cpu->AF.b[HI]<<7); \ + SETHIDDEN(cpu->AF.b[HI]); \ +} while(0) + + +#define RRA \ +do { \ + Z80Byte c; \ + c=CARRY; \ + cpu->AF.b[LO]=(cpu->AF.b[LO]&(S_Z80|Z_Z80|P_Z80))|(cpu->AF.b[HI]&C_Z80); \ + cpu->AF.b[HI]=(cpu->AF.b[HI]>>1)|(c<<7); \ + SETHIDDEN(cpu->AF.b[HI]); \ +} while(0) + + +#define RRC(REG) \ +do { \ + Z80Byte c; \ + c=(REG)&C_Z80; \ + (REG)=((REG)>>1)|((REG)<<7); \ + cpu->AF.b[LO]=PSZtable[(REG)]|c; \ + SETHIDDEN(REG); \ +} while(0) + + +#define RR(REG) \ +do { \ + Z80Byte c; \ + c=(REG)&C_Z80; \ + (REG)=((REG)>>1)|(CARRY<<7); \ + cpu->AF.b[LO]=PSZtable[(REG)]|c; \ + SETHIDDEN(REG); \ +} while(0) + + +#define RLCA \ +do { \ + cpu->AF.b[LO]=(cpu->AF.b[LO]&(S_Z80|Z_Z80|P_Z80))|(cpu->AF.b[HI]>>7); \ + cpu->AF.b[HI]=(cpu->AF.b[HI]<<1)|(cpu->AF.b[HI]>>7); \ + SETHIDDEN(cpu->AF.b[HI]); \ +} while(0) + + +#define RLA \ +do { \ + Z80Byte c; \ + c=CARRY; \ + cpu->AF.b[LO]=(cpu->AF.b[LO]&(S_Z80|Z_Z80|P_Z80))|(cpu->AF.b[HI]>>7); \ + cpu->AF.b[HI]=(cpu->AF.b[HI]<<1)|c; \ + SETHIDDEN(cpu->AF.b[HI]); \ +} while(0) + + +#define RLC(REG) \ +do { \ + Z80Byte c; \ + c=(REG)>>7; \ + (REG)=((REG)<<1)|c; \ + cpu->AF.b[LO]=PSZtable[(REG)]|c; \ + SETHIDDEN(REG); \ +} while(0) + + +#define RL(REG) \ +do { \ + Z80Byte c; \ + c=(REG)>>7; \ + (REG)=((REG)<<1)|CARRY; \ + cpu->AF.b[LO]=PSZtable[(REG)]|c; \ + SETHIDDEN(REG); \ +} while(0) + + +#define SRL(REG) \ +do { \ + Z80Byte c; \ + c=(REG)&C_Z80; \ + (REG)>>=1; \ + cpu->AF.b[LO]=PSZtable[(REG)]|c; \ + SETHIDDEN(REG); \ +} while(0) + + +#define SRA(REG) \ +do { \ + Z80Byte c; \ + c=(REG)&C_Z80; \ + (REG)=((REG)>>1)|((REG)&0x80); \ + cpu->AF.b[LO]=PSZtable[(REG)]|c; \ + SETHIDDEN(REG); \ +} while(0) + + +#define SLL(REG) \ +do { \ + Z80Byte c; \ + c=(REG)>>7; \ + (REG)=((REG)<<1)|1; \ + cpu->AF.b[LO]=PSZtable[(REG)]|c; \ + SETHIDDEN(REG); \ +} while(0) + + +#define SLA(REG) \ +do { \ + Z80Byte c; \ + c=(REG)>>7; \ + (REG)=(REG)<<1; \ + cpu->AF.b[LO]=PSZtable[(REG)]|c; \ + SETHIDDEN(REG); \ +} while(0) + + +/* ---------------------------------------- BOOLEAN OPS +*/ +#define AND(VAL) \ +do { \ + cpu->AF.b[HI]&=VAL; \ + cpu->AF.b[LO]=PSZtable[cpu->AF.b[HI]]|H_Z80; \ + SETHIDDEN(cpu->AF.b[HI]); \ +} while(0) + + +#define OR(VAL) \ +do { \ + cpu->AF.b[HI]|=VAL; \ + cpu->AF.b[LO]=PSZtable[cpu->AF.b[HI]]; \ + SETHIDDEN(cpu->AF.b[HI]); \ +} while(0) + + +#define XOR(VAL) \ +do { \ + cpu->AF.b[HI]^=VAL; \ + cpu->AF.b[LO]=PSZtable[cpu->AF.b[HI]]; \ + SETHIDDEN(cpu->AF.b[HI]); \ +} while(0) + + +#define BIT(REG,B) \ +do { \ + cpu->AF.b[LO]=CARRY|H_Z80; \ + if ((REG)&(1<<B)) \ + { \ + if (B==7 && (REG&S_Z80)) cpu->AF.b[LO]|=S_Z80; \ + if (B==5 && (REG&B5_Z80)) cpu->AF.b[LO]|=B5_Z80; \ + if (B==3 && (REG&B3_Z80)) cpu->AF.b[LO]|=B3_Z80; \ + } \ + else \ + { \ + cpu->AF.b[LO]|=Z_Z80; \ + cpu->AF.b[LO]|=P_Z80; \ + } \ +} while(0) + +#define BIT_SET(REG,B) (REG)|=(1<<B) +#define BIT_RES(REG,B) (REG)&=~(1<<B) + + +/* ---------------------------------------- JUMP OPERATIONS +*/ +#define JR_COND(COND) \ +do { \ + if (COND) \ + { \ + TSTATE(12); \ + JR; \ + } \ + else \ + { \ + TSTATE(7); \ + NOJR; \ + } \ +} while(0) + + +#define JP_COND(COND) \ +do { \ + TSTATE(10); \ + if (COND) \ + { \ + JP; \ + } \ + else \ + { \ + NOJP; \ + } \ +} while(0) + + +#define CALL_COND(COND) \ +do { \ + if (COND) \ + { \ + TSTATE(17); \ + CALL; \ + } \ + else \ + { \ + TSTATE(10); \ + NOCALL; \ + } \ +} while(0) + + +#define RET_COND(COND) \ +do { \ + if (COND) \ + { \ + TSTATE(11); \ + POP(cpu->PC); \ + } \ + else \ + { \ + TSTATE(5); \ + } \ +} while(0) + + +#define RST(ADDR) \ + TSTATE(11); \ + PUSH(cpu->PC); \ + cpu->PC=ADDR + +/* ---------------------------------------- BLOCK OPERATIONS +*/ +#define LDI \ +do { \ + Z80Byte b; \ + \ + b=PEEK(cpu->HL.w); \ + POKE(cpu->DE.w,b); \ + cpu->DE.w++; \ + cpu->HL.w++; \ + cpu->BC.w--; \ + \ + CLRFLAG(H_Z80); \ + CLRFLAG(N_Z80); \ + \ + if (cpu->BC.w) \ + SETFLAG(P_Z80); \ + else \ + CLRFLAG(P_Z80); \ + \ + SETHIDDEN(cpu->AF.b[HI]+b); \ +} while(0) + +#define LDD \ +do { \ + Z80Byte b; \ + \ + b=PEEK(cpu->HL.w); \ + POKE(cpu->DE.w,b); \ + cpu->DE.w--; \ + cpu->HL.w--; \ + cpu->BC.w--; \ + \ + CLRFLAG(H_Z80); \ + CLRFLAG(N_Z80); \ + \ + if (cpu->BC.w) \ + SETFLAG(P_Z80); \ + else \ + CLRFLAG(P_Z80); \ + \ + SETHIDDEN(cpu->AF.b[HI]+b); \ +} while(0) + +#define CPI \ +do { \ + Z80Byte c,b; \ + \ + c=CARRY; \ + b=PEEK(cpu->HL.w); \ + \ + CMP8(b); \ + \ + if (c) \ + SETFLAG(C_Z80); \ + else \ + CLRFLAG(C_Z80); \ + \ + cpu->HL.w++; \ + cpu->BC.w--; \ + \ + if (cpu->BC.w) \ + SETFLAG(P_Z80); \ + else \ + CLRFLAG(P_Z80); \ +} while(0) + +#define CPD \ +do { \ + Z80Byte c,b; \ + \ + c=CARRY; \ + b=PEEK(cpu->HL.w); \ + \ + CMP8(b); \ + \ + if (c) \ + SETFLAG(C_Z80); \ + else \ + CLRFLAG(C_Z80); \ + \ + cpu->HL.w--; \ + cpu->BC.w--; \ + \ + if (cpu->BC.w) \ + SETFLAG(P_Z80); \ + else \ + CLRFLAG(P_Z80); \ +} while(0) + +#define INI \ +do { \ + Z80Word w; \ + Z80Byte b; \ + \ + b=IN(cpu->BC.w); \ + POKE(cpu->HL.w,b); \ + \ + cpu->BC.b[HI]--; \ + cpu->HL.w++; \ + \ + cpu->AF.b[LO]=SZtable[cpu->BC.b[HI]]; \ + SETHIDDEN(cpu->BC.b[HI]); \ + \ + w=(((Z80Word)cpu->BC.b[LO])&0xff)+b; \ + \ + if (b&0x80) \ + SETFLAG(N_Z80); \ + \ + if (w&0x100) \ + { \ + SETFLAG(C_Z80); \ + SETFLAG(H_Z80); \ + } \ + else \ + { \ + CLRFLAG(C_Z80); \ + CLRFLAG(H_Z80); \ + } \ +} while(0) + +#define IND \ +do { \ + Z80Word w; \ + Z80Byte b; \ + \ + b=IN(cpu->BC.w); \ + POKE(cpu->HL.w,b); \ + \ + cpu->BC.b[HI]--; \ + cpu->HL.w--; \ + \ + cpu->AF.b[LO]=SZtable[cpu->BC.b[HI]]; \ + SETHIDDEN(cpu->BC.b[HI]); \ + \ + w=(((Z80Word)cpu->BC.b[LO])&0xff)+b; \ + \ + if (b&0x80) \ + SETFLAG(N_Z80); \ + \ + if (w&0x100) \ + { \ + SETFLAG(C_Z80); \ + SETFLAG(H_Z80); \ + } \ + else \ + { \ + CLRFLAG(C_Z80); \ + CLRFLAG(H_Z80); \ + } \ +} while(0) \ + +#define OUTI \ +do { \ + OUT(cpu->BC.w,PEEK(cpu->HL.w)); \ + \ + cpu->HL.w++; \ + cpu->BC.b[HI]--; \ + \ + cpu->AF.b[LO]=SZtable[cpu->BC.b[HI]]; \ + SETHIDDEN(cpu->BC.b[HI]); \ +} while(0) + +#define OUTD \ +do { \ + OUT(cpu->BC.w,PEEK(cpu->HL.w)); \ + \ + cpu->HL.w--; \ + cpu->BC.b[HI]--; \ + \ + cpu->AF.b[LO]=SZtable[cpu->BC.b[HI]]; \ + SETFLAG(N_Z80); \ + SETHIDDEN(cpu->BC.b[HI]); \ +} while(0) + + +/* ---------------------------------------- BASE OPCODE SHORT-HAND BLOCKS +*/ + +#define LD_BLOCK(BASE,DEST,DEST2) \ + case BASE: /* LD DEST,B */ \ + TSTATE(4); \ + DEST=cpu->BC.b[HI]; \ + break; \ + \ + case BASE+1: /* LD DEST,C */ \ + TSTATE(4); \ + DEST=cpu->BC.b[LO]; \ + break; \ + \ + case BASE+2: /* LD DEST,D */ \ + TSTATE(4); \ + DEST=cpu->DE.b[HI]; \ + break; \ + \ + case BASE+3: /* LD DEST,E */ \ + TSTATE(4); \ + DEST=cpu->DE.b[LO]; \ + break; \ + \ + case BASE+4: /* LD DEST,H */ \ + TSTATE(4); \ + DEST=*H; \ + break; \ + \ + case BASE+5: /* LD DEST,L */ \ + TSTATE(4); \ + DEST=*L; \ + break; \ + \ + case BASE+6: /* LD DEST,(HL) */ \ + TSTATE(7); \ + OFFSET(off); \ + DEST2=PEEK(*HL+off); \ + break; \ + \ + case BASE+7: /* LD DEST,A */ \ + TSTATE(4); \ + DEST=cpu->AF.b[HI]; \ + break; + +#define ALU_BLOCK(BASE,OP) \ + case BASE: /* OP A,B */ \ + TSTATE(4); \ + OP(cpu->BC.b[HI]); \ + break; \ + \ + case BASE+1: /* OP A,C */ \ + TSTATE(4); \ + OP(cpu->BC.b[LO]); \ + break; \ + \ + case BASE+2: /* OP A,D */ \ + TSTATE(4); \ + OP(cpu->DE.b[HI]); \ + break; \ + \ + case BASE+3: /* OP A,E */ \ + TSTATE(4); \ + OP(cpu->DE.b[LO]); \ + break; \ + \ + case BASE+4: /* OP A,H */ \ + TSTATE(4); \ + OP(*H); \ + break; \ + \ + case BASE+5: /* OP A,L */ \ + TSTATE(4); \ + OP(*L); \ + break; \ + \ + case BASE+6: /* OP A,(HL) */ \ + TSTATE(7); \ + OFFSET(off); \ + OP_ON_MEM(OP,*HL+off); \ + break; \ + \ + case BASE+7: /* OP A,A */ \ + TSTATE(4); \ + OP(cpu->AF.b[HI]); \ + break; + + +/* ---------------------------------------- CB OPCODE SHORT-HAND BLOCKS +*/ + +#define CB_ALU_BLOCK(BASE,OP) \ + case BASE: /* OP B */ \ + TSTATE(8); \ + OP(cpu->BC.b[HI]); \ + break; \ + \ + case BASE+1: /* OP C */ \ + TSTATE(8); \ + OP(cpu->BC.b[LO]); \ + break; \ + \ + case BASE+2: /* OP D */ \ + TSTATE(8); \ + OP(cpu->DE.b[HI]); \ + break; \ + \ + case BASE+3: /* OP E */ \ + TSTATE(8); \ + OP(cpu->DE.b[LO]); \ + break; \ + \ + case BASE+4: /* OP H */ \ + TSTATE(8); \ + OP(cpu->HL.b[HI]); \ + break; \ + \ + case BASE+5: /* OP L */ \ + TSTATE(8); \ + OP(cpu->HL.b[LO]); \ + break; \ + \ + case BASE+6: /* OP (HL) */ \ + TSTATE(15); \ + OP_ON_MEM(OP,cpu->HL.w); \ + break; \ + \ + case BASE+7: /* OP A */ \ + TSTATE(8); \ + OP(cpu->AF.b[HI]); \ + break; + +#define CB_BITMANIP_BLOCK(BASE,OP,BIT_NO) \ + case BASE: /* OP B */ \ + TSTATE(8); \ + OP(cpu->BC.b[HI],BIT_NO); \ + break; \ + \ + case BASE+1: /* OP C */ \ + TSTATE(8); \ + OP(cpu->BC.b[LO],BIT_NO); \ + break; \ + \ + case BASE+2: /* OP D */ \ + TSTATE(8); \ + OP(cpu->DE.b[HI],BIT_NO); \ + break; \ + \ + case BASE+3: /* OP E */ \ + TSTATE(8); \ + OP(cpu->DE.b[LO],BIT_NO); \ + break; \ + \ + case BASE+4: /* OP H */ \ + TSTATE(8); \ + OP(cpu->HL.b[HI],BIT_NO); \ + break; \ + \ + case BASE+5: /* OP L */ \ + TSTATE(8); \ + OP(cpu->HL.b[LO],BIT_NO); \ + break; \ + \ + case BASE+6: /* OP (HL) */ \ + TSTATE(12); \ + OP_ON_MEM_WITH_ARG(OP,cpu->HL.w,BIT_NO); \ + break; \ + \ + case BASE+7: /* OP A */ \ + TSTATE(8); \ + OP(cpu->AF.b[HI],BIT_NO); \ + break; + +/* ---------------------------------------- SHIFTED CB OPCODE SHORT-HAND BLOCKS +*/ + +#define SHIFTED_CB_ALU_BLOCK(BASE,OP) \ + case BASE: /* OP B */ \ + TSTATE(8); \ + OP_ON_MEM_WITH_COPY(OP,addr,cpu->BC.b[HI]); \ + break; \ + \ + case BASE+1: /* OP C */ \ + TSTATE(8); \ + OP_ON_MEM_WITH_COPY(OP,addr,cpu->BC.b[LO]); \ + break; \ + \ + case BASE+2: /* OP D */ \ + TSTATE(8); \ + OP_ON_MEM_WITH_COPY(OP,addr,cpu->DE.b[HI]); \ + break; \ + \ + case BASE+3: /* OP E */ \ + TSTATE(8); \ + OP_ON_MEM_WITH_COPY(OP,addr,cpu->DE.b[LO]); \ + break; \ + \ + case BASE+4: /* OP H */ \ + TSTATE(8); \ + OP_ON_MEM_WITH_COPY(OP,addr,cpu->HL.b[HI]); \ + break; \ + \ + case BASE+5: /* OP L */ \ + TSTATE(8); \ + OP_ON_MEM_WITH_COPY(OP,addr,cpu->HL.b[LO]); \ + break; \ + \ + case BASE+6: /* OP (HL) */ \ + TSTATE(15); \ + OP_ON_MEM(OP,addr); \ + break; \ + \ + case BASE+7: /* OP A */ \ + TSTATE(8); \ + OP_ON_MEM_WITH_COPY(OP,addr,cpu->AF.b[HI]); \ + break; + +#define SHIFTED_CB_BITMANIP_BLOCK(BASE,OP,BIT_NO) \ + case BASE: /* OP B */ \ + TSTATE(8); \ + OP_ON_MEM_WITH_ARG_AND_COPY(OP,addr,BIT_NO,cpu->BC.b[HI]); \ + break; \ + \ + case BASE+1: /* OP C */ \ + TSTATE(8); \ + OP_ON_MEM_WITH_ARG_AND_COPY(OP,addr,BIT_NO,cpu->BC.b[LO]); \ + break; \ + \ + case BASE+2: /* OP D */ \ + TSTATE(8); \ + OP_ON_MEM_WITH_ARG_AND_COPY(OP,addr,BIT_NO,cpu->DE.b[HI]); \ + break; \ + \ + case BASE+3: /* OP E */ \ + TSTATE(8); \ + OP_ON_MEM_WITH_ARG_AND_COPY(OP,addr,BIT_NO,cpu->DE.b[LO]); \ + break; \ + \ + case BASE+4: /* OP H */ \ + TSTATE(8); \ + OP_ON_MEM_WITH_ARG_AND_COPY(OP,addr,BIT_NO,cpu->HL.b[HI]); \ + break; \ + \ + case BASE+5: /* OP L */ \ + TSTATE(8); \ + OP_ON_MEM_WITH_ARG_AND_COPY(OP,addr,BIT_NO,cpu->HL.b[LO]); \ + break; \ + \ + case BASE+6: /* OP (HL) */ \ + TSTATE(12); \ + OP_ON_MEM_WITH_ARG(OP,addr,BIT_NO); \ + break; \ + \ + case BASE+7: /* OP A */ \ + TSTATE(8); \ + OP_ON_MEM_WITH_ARG_AND_COPY(OP,addr,BIT_NO,cpu->AF.b[HI]); \ + break; + +/* ---------------------------------------- DAA +*/ + +/* This alogrithm is based on info from + http://www.worldofspectrum.org/faq/reference/z80reference.htm +*/ +static void DAA (Z80 *cpu) +{ + Z80Byte add=0; + Z80Byte carry=0; + Z80Byte nf=cpu->AF.b[LO]&N_Z80; + Z80Byte acc=cpu->AF.b[HI]; + + if (acc>0x99 || IS_C) + { + add|=0x60; + carry=C_Z80; + } + + if ((acc&0xf)>0x9 || IS_H) + { + add|=0x06; + } + + if (nf) + { + cpu->AF.b[HI]-=add; + } + else + { + cpu->AF.b[HI]+=add; + } + + cpu->AF.b[LO]=PSZtable[cpu->AF.b[HI]] + | carry + | nf + | ((acc^cpu->AF.b[HI])&H_Z80) + | (cpu->AF.b[HI]&(B3_Z80|B5_Z80)); +} + +/* ---------------------------------------- HANDLERS FOR ED OPCODES +*/ +static void DecodeED(Z80 *cpu, Z80Byte opcode) +{ + switch(opcode) + { + case 0x40: /* IN B,(C) */ + TSTATE(12); + + if (PRIV->pread) + { + cpu->BC.b[HI]=PRIV->pread(cpu,cpu->BC.w); + } + else + { + cpu->BC.b[HI]=0; + } + + cpu->AF.b[LO]=CARRY|PSZtable[cpu->BC.b[HI]]; + SETHIDDEN(cpu->BC.b[HI]); + break; + + case 0x41: /* OUT (C),B */ + TSTATE(12); + if (PRIV->pwrite) PRIV->pwrite(cpu,cpu->BC.w,cpu->BC.b[HI]); + break; + + case 0x42: /* SBC HL,BC */ + TSTATE(15); + SBC16(cpu->HL.w,cpu->BC.w); + break; + + case 0x43: /* LD (nnnn),BC */ + TSTATE(20); + POKEW(FETCH_WORD,cpu->BC.w); + break; + + case 0x44: /* NEG */ + { + Z80Byte b; + + TSTATE(8); + + b=cpu->AF.b[HI]; + cpu->AF.b[HI]=0; + SUB8(b); + break; + } + + case 0x45: /* RETN */ + TSTATE(14); + cpu->IFF1=cpu->IFF2; + POP(cpu->PC); + break; + + case 0x46: /* IM 0 */ + TSTATE(8); + cpu->IM=0; + break; + + case 0x47: /* LD I,A */ + TSTATE(9); + cpu->I=cpu->AF.b[HI]; + break; + + case 0x48: /* IN C,(C) */ + TSTATE(12); + + if (PRIV->pread) + { + cpu->BC.b[LO]=PRIV->pread(cpu,cpu->BC.w); + } + else + { + cpu->BC.b[LO]=0; + } + + cpu->AF.b[LO]=CARRY|PSZtable[cpu->BC.b[LO]]; + SETHIDDEN(cpu->BC.b[LO]); + break; + + case 0x49: /* OUT (C),C */ + TSTATE(12); + if (PRIV->pwrite) PRIV->pwrite(cpu,cpu->BC.w,cpu->BC.b[LO]); + break; + + case 0x4a: /* ADC HL,BC */ + TSTATE(15); + ADC16(cpu->HL.w,cpu->BC.w); + break; + + case 0x4b: /* LD BC,(nnnn) */ + TSTATE(20); + cpu->BC.w=PEEKW(FETCH_WORD); + break; + + case 0x4c: /* NEG */ + { + Z80Byte b; + + TSTATE(8); + + b=cpu->AF.b[HI]; + cpu->AF.b[HI]=0; + SUB8(b); + break; + } + + case 0x4d: /* RETI */ + TSTATE(14); + CALLBACK(eZ80_RETI,0); + cpu->IFF1=cpu->IFF2; + POP(cpu->PC); + break; + + case 0x4e: /* IM 0/1 */ + TSTATE(8); + cpu->IM=0; + break; + + case 0x4f: /* LD R,A */ + TSTATE(9); + cpu->R=cpu->AF.b[HI]; + break; + + case 0x50: /* IN D,(C) */ + TSTATE(12); + + if (PRIV->pread) + { + cpu->DE.b[HI]=PRIV->pread(cpu,cpu->BC.w); + } + else + { + cpu->DE.b[HI]=0; + } + + cpu->AF.b[LO]=CARRY|PSZtable[cpu->DE.b[HI]]; + SETHIDDEN(cpu->BC.b[HI]); + break; + + case 0x51: /* OUT (C),D */ + TSTATE(12); + if (PRIV->pwrite) PRIV->pwrite(cpu,cpu->BC.w,cpu->DE.b[HI]); + break; + + case 0x52: /* SBC HL,DE */ + TSTATE(15); + SBC16(cpu->HL.w,cpu->DE.w); + break; + + case 0x53: /* LD (nnnn),DE */ + TSTATE(20); + POKEW(FETCH_WORD,cpu->DE.w); + break; + + case 0x54: /* NEG */ + { + Z80Byte b; + + TSTATE(8); + + b=cpu->AF.b[HI]; + cpu->AF.b[HI]=0; + SUB8(b); + break; + } + + case 0x55: /* RETN */ + TSTATE(14); + cpu->IFF1=cpu->IFF2; + POP(cpu->PC); + break; + + case 0x56: /* IM 1 */ + TSTATE(8); + cpu->IM=1; + break; + + case 0x57: /* LD A,I */ + TSTATE(9); + cpu->AF.b[HI]=cpu->I; + break; + + case 0x58: /* IN E,(C) */ + TSTATE(12); + + if (PRIV->pread) + { + cpu->DE.b[LO]=PRIV->pread(cpu,cpu->BC.w); + } + else + { + cpu->BC.b[LO]=0; + } + + cpu->AF.b[LO]=CARRY|PSZtable[cpu->DE.b[LO]]; + SETHIDDEN(cpu->DE.b[LO]); + break; + + case 0x59: /* OUT (C),E */ + TSTATE(12); + if (PRIV->pwrite) PRIV->pwrite(cpu,cpu->BC.w,cpu->DE.b[LO]); + break; + + case 0x5a: /* ADC HL,DE */ + TSTATE(15); + ADC16(cpu->HL.w,cpu->DE.w); + break; + + case 0x5b: /* LD DE,(nnnn) */ + TSTATE(20); + cpu->DE.w=PEEKW(FETCH_WORD); + break; + + case 0x5c: /* NEG */ + { + Z80Byte b; + + TSTATE(8); + + b=cpu->AF.b[HI]; + cpu->AF.b[HI]=0; + SUB8(b); + break; + } + + case 0x5d: /* RETN */ + TSTATE(14); + cpu->IFF1=cpu->IFF2; + POP(cpu->PC); + break; + + case 0x5e: /* IM 2 */ + TSTATE(8); + cpu->IM=2; + break; + + case 0x5f: /* LD A,R */ + TSTATE(9); + cpu->AF.b[HI]=cpu->R; + break; + + case 0x60: /* IN H,(C) */ + TSTATE(12); + + if (PRIV->pread) + { + cpu->HL.b[HI]=PRIV->pread(cpu,cpu->BC.w); + } + else + { + cpu->HL.b[HI]=0; + } + + cpu->AF.b[LO]=CARRY|PSZtable[cpu->HL.b[HI]]; + SETHIDDEN(cpu->HL.b[HI]); + break; + + case 0x61: /* OUT (C),H */ + TSTATE(12); + if (PRIV->pwrite) PRIV->pwrite(cpu,cpu->BC.w,cpu->HL.b[HI]); + break; + + case 0x62: /* SBC HL,HL */ + TSTATE(15); + SBC16(cpu->HL.w,cpu->HL.w); + break; + + case 0x63: /* LD (nnnn),HL */ + TSTATE(20); + POKEW(FETCH_WORD,cpu->HL.w); + break; + + case 0x64: /* NEG */ + { + Z80Byte b; + + TSTATE(8); + + b=cpu->AF.b[HI]; + cpu->AF.b[HI]=0; + SUB8(b); + break; + } + + case 0x65: /* RETN */ + TSTATE(14); + cpu->IFF1=cpu->IFF2; + POP(cpu->PC); + break; + + case 0x66: /* IM 0 */ + TSTATE(8); + cpu->IM=0; + break; + + case 0x67: /* RRD */ + { + Z80Byte b; + + TSTATE(18); + + b=PEEK(cpu->HL.w); + + POKE(cpu->HL.w,(b>>4)|(cpu->AF.b[HI]<<4)); + cpu->AF.b[HI]=(cpu->AF.b[HI]&0xf0)|(b&0x0f); + + cpu->AF.b[LO]=CARRY|PSZtable[cpu->AF.b[HI]]; + SETHIDDEN(cpu->AF.b[HI]); + break; + } + + case 0x68: /* IN L,(C) */ + TSTATE(12); + + if (PRIV->pread) + { + cpu->HL.b[LO]=PRIV->pread(cpu,cpu->BC.w); + } + else + { + cpu->HL.b[LO]=0; + } + + cpu->AF.b[LO]=CARRY|PSZtable[cpu->HL.b[LO]]; + SETHIDDEN(cpu->HL.b[LO]); + break; + + case 0x69: /* OUT (C),L */ + TSTATE(12); + if (PRIV->pwrite) PRIV->pwrite(cpu,cpu->BC.w,cpu->HL.b[LO]); + break; + + case 0x6a: /* ADC HL,HL */ + TSTATE(15); + ADC16(cpu->HL.w,cpu->HL.w); + break; + + case 0x6b: /* LD HL,(nnnn) */ + TSTATE(20); + cpu->HL.w=PEEKW(FETCH_WORD); + break; + + case 0x6c: /* NEG */ + { + Z80Byte b; + + TSTATE(8); + + b=cpu->AF.b[HI]; + cpu->AF.b[HI]=0; + SUB8(b); + break; + } + + case 0x6d: /* RETN */ + TSTATE(14); + cpu->IFF1=cpu->IFF2; + POP(cpu->PC); + break; + + case 0x6e: /* IM 0/1 */ + TSTATE(8); + cpu->IM=0; + break; + + case 0x6f: /* RLD */ + { + Z80Byte b; + + TSTATE(18); + + b=PEEK(cpu->HL.w); + + POKE(cpu->HL.w,(b<<4)|(cpu->AF.b[HI]&0x0f)); + cpu->AF.b[HI]=(cpu->AF.b[HI]&0xf0)|(b>>4); + + cpu->AF.b[LO]=CARRY|PSZtable[cpu->AF.b[HI]]; + SETHIDDEN(cpu->AF.b[HI]); + break; + } + + case 0x70: /* IN (C) */ + { + Z80Byte b; + + TSTATE(12); + + if (PRIV->pread) + { + b=PRIV->pread(cpu,cpu->BC.w); + } + else + { + b=0; + } + + cpu->AF.b[LO]=CARRY|PSZtable[b]; + SETHIDDEN(b); + break; + } + + case 0x71: /* OUT (C) */ + TSTATE(12); + if (PRIV->pwrite) PRIV->pwrite(cpu,cpu->BC.w,0); + break; + + case 0x72: /* SBC HL,SP */ + TSTATE(15); + SBC16(cpu->HL.w,cpu->SP); + break; + + case 0x73: /* LD (nnnn),SP */ + TSTATE(20); + POKEW(FETCH_WORD,cpu->SP); + break; + + case 0x74: /* NEG */ + { + Z80Byte b; + + TSTATE(8); + + b=cpu->AF.b[HI]; + cpu->AF.b[HI]=0; + SUB8(b); + break; + } + + case 0x75: /* RETN */ + TSTATE(14); + cpu->IFF1=cpu->IFF2; + POP(cpu->PC); + break; + + case 0x76: /* IM 1 */ + TSTATE(8); + cpu->IM=1; + break; + + case 0x77: /* NOP */ + TSTATE(8); + CALLBACK(eZ80_EDHook,opcode); + break; + + case 0x78: /* IN A,(C) */ + TSTATE(12); + + if (PRIV->pread) + { + cpu->AF.b[HI]=PRIV->pread(cpu,cpu->BC.w); + } + else + { + cpu->AF.b[HI]=0; + } + + cpu->AF.b[LO]=CARRY|PSZtable[cpu->AF.b[HI]]; + SETHIDDEN(cpu->AF.b[HI]); + break; + + case 0x79: /* OUT (C),A */ + TSTATE(12); + if (PRIV->pwrite) PRIV->pwrite(cpu,cpu->BC.w,cpu->AF.b[HI]); + break; + + case 0x7a: /* ADC HL,SP */ + TSTATE(15); + ADC16(cpu->HL.w,cpu->SP); + break; + + case 0x7b: /* LD SP,(nnnn) */ + TSTATE(20); + cpu->SP=PEEKW(FETCH_WORD); + break; + + case 0x7c: /* NEG */ + { + Z80Byte b; + + TSTATE(8); + + b=cpu->AF.b[HI]; + cpu->AF.b[HI]=0; + SUB8(b); + break; + } + + case 0x7d: /* RETN */ + TSTATE(14); + cpu->IFF1=cpu->IFF2; + POP(cpu->PC); + break; + + case 0x7e: /* IM 2 */ + TSTATE(8); + cpu->IM=2; + break; + + case 0x7f: /* NOP */ + TSTATE(8); + CALLBACK(eZ80_EDHook,opcode); + break; + + case 0xa0: /* LDI */ + TSTATE(16); + LDI; + break; + + case 0xa1: /* CPI */ + TSTATE(16); + CPI; + break; + + case 0xa2: /* INI */ + TSTATE(16); + INI; + break; + + case 0xa3: /* OUTI */ + TSTATE(16); + OUTI; + break; + + case 0xa8: /* LDD */ + TSTATE(16); + LDD; + break; + + case 0xa9: /* CPD */ + TSTATE(16); + CPD; + break; + + case 0xaa: /* IND */ + TSTATE(16); + IND; + break; + + case 0xab: /* OUTD */ + TSTATE(16); + OUTD; + break; + + case 0xb0: /* LDIR */ + TSTATE(16); + LDI; + if (cpu->BC.w) + { + TSTATE(5); + cpu->PC-=2; + } + break; + + case 0xb1: /* CPIR */ + TSTATE(16); + CPI; + if (cpu->BC.w && !IS_Z) + { + TSTATE(5); + cpu->PC-=2; + } + break; + + case 0xb2: /* INIR */ + TSTATE(16); + INI; + if (cpu->BC.w) + { + TSTATE(5); + cpu->PC-=2; + } + break; + + case 0xb3: /* OTIR */ + TSTATE(16); + OUTI; + if (cpu->BC.w) + { + TSTATE(5); + cpu->PC-=2; + } + break; + + case 0xb8: /* LDDR */ + TSTATE(16); + LDD; + if (cpu->BC.w) + { + TSTATE(5); + cpu->PC-=2; + } + break; + + case 0xb9: /* CPDR */ + TSTATE(16); + CPD; + if (cpu->BC.w && !IS_Z) + { + TSTATE(5); + cpu->PC-=2; + } + break; + + case 0xba: /* INDR */ + TSTATE(16); + IND; + if (cpu->BC.w) + { + TSTATE(5); + cpu->PC-=2; + } + break; + + case 0xbb: /* OTDR */ + TSTATE(16); + OUTD; + if (cpu->BC.w) + { + TSTATE(5); + cpu->PC-=2; + } + break; + + /* All the rest are NOP/invalid + */ + default: + TSTATE(8); + CALLBACK(eZ80_EDHook,opcode); + break; + } +} + + +/* ---------------------------------------- HANDLERS FOR CB OPCODES +*/ +static void DecodeCB(Z80 *cpu, Z80Byte opcode) +{ + switch(opcode) + { + CB_ALU_BLOCK(0x00,RLC) + CB_ALU_BLOCK(0x08,RRC) + CB_ALU_BLOCK(0x10,RL) + CB_ALU_BLOCK(0x18,RR) + CB_ALU_BLOCK(0x20,SLA) + CB_ALU_BLOCK(0x28,SRA) + CB_ALU_BLOCK(0x30,SLL) + CB_ALU_BLOCK(0x38,SRL) + + CB_BITMANIP_BLOCK(0x40,BIT,0) + CB_BITMANIP_BLOCK(0x48,BIT,1) + CB_BITMANIP_BLOCK(0x50,BIT,2) + CB_BITMANIP_BLOCK(0x58,BIT,3) + CB_BITMANIP_BLOCK(0x60,BIT,4) + CB_BITMANIP_BLOCK(0x68,BIT,5) + CB_BITMANIP_BLOCK(0x70,BIT,6) + CB_BITMANIP_BLOCK(0x78,BIT,7) + + CB_BITMANIP_BLOCK(0x80,BIT_RES,0) + CB_BITMANIP_BLOCK(0x88,BIT_RES,1) + CB_BITMANIP_BLOCK(0x90,BIT_RES,2) + CB_BITMANIP_BLOCK(0x98,BIT_RES,3) + CB_BITMANIP_BLOCK(0xa0,BIT_RES,4) + CB_BITMANIP_BLOCK(0xa8,BIT_RES,5) + CB_BITMANIP_BLOCK(0xb0,BIT_RES,6) + CB_BITMANIP_BLOCK(0xb8,BIT_RES,7) + + CB_BITMANIP_BLOCK(0xc0,BIT_SET,0) + CB_BITMANIP_BLOCK(0xc8,BIT_SET,1) + CB_BITMANIP_BLOCK(0xd0,BIT_SET,2) + CB_BITMANIP_BLOCK(0xd8,BIT_SET,3) + CB_BITMANIP_BLOCK(0xe0,BIT_SET,4) + CB_BITMANIP_BLOCK(0xe8,BIT_SET,5) + CB_BITMANIP_BLOCK(0xf0,BIT_SET,6) + CB_BITMANIP_BLOCK(0xf8,BIT_SET,7) + } +} + + +static void ShiftedDecodeCB(Z80 *cpu, Z80Byte opcode, Z80Relative offset) +{ + Z80Word addr; + + /* See if we've come here from a IX/IY shift. + */ + switch (PRIV->shift) + { + case 0xdd: + addr=cpu->IX.w+offset; + break; + case 0xfd: + addr=cpu->IY.w+offset; + break; + default: + addr=cpu->HL.w; /* Play safe... */ + break; + } + + switch(opcode) + { + SHIFTED_CB_ALU_BLOCK(0x00,RLC) + SHIFTED_CB_ALU_BLOCK(0x08,RRC) + SHIFTED_CB_ALU_BLOCK(0x10,RL) + SHIFTED_CB_ALU_BLOCK(0x18,RR) + SHIFTED_CB_ALU_BLOCK(0x20,SLA) + SHIFTED_CB_ALU_BLOCK(0x28,SRA) + SHIFTED_CB_ALU_BLOCK(0x30,SLL) + SHIFTED_CB_ALU_BLOCK(0x38,SRL) + + SHIFTED_CB_BITMANIP_BLOCK(0x40,BIT,0) + SHIFTED_CB_BITMANIP_BLOCK(0x48,BIT,1) + SHIFTED_CB_BITMANIP_BLOCK(0x50,BIT,2) + SHIFTED_CB_BITMANIP_BLOCK(0x58,BIT,3) + SHIFTED_CB_BITMANIP_BLOCK(0x60,BIT,4) + SHIFTED_CB_BITMANIP_BLOCK(0x68,BIT,5) + SHIFTED_CB_BITMANIP_BLOCK(0x70,BIT,6) + SHIFTED_CB_BITMANIP_BLOCK(0x78,BIT,7) + + SHIFTED_CB_BITMANIP_BLOCK(0x80,BIT_RES,0) + SHIFTED_CB_BITMANIP_BLOCK(0x88,BIT_RES,1) + SHIFTED_CB_BITMANIP_BLOCK(0x90,BIT_RES,2) + SHIFTED_CB_BITMANIP_BLOCK(0x98,BIT_RES,3) + SHIFTED_CB_BITMANIP_BLOCK(0xa0,BIT_RES,4) + SHIFTED_CB_BITMANIP_BLOCK(0xa8,BIT_RES,5) + SHIFTED_CB_BITMANIP_BLOCK(0xb0,BIT_RES,6) + SHIFTED_CB_BITMANIP_BLOCK(0xb8,BIT_RES,7) + + SHIFTED_CB_BITMANIP_BLOCK(0xc0,BIT_SET,0) + SHIFTED_CB_BITMANIP_BLOCK(0xc8,BIT_SET,1) + SHIFTED_CB_BITMANIP_BLOCK(0xd0,BIT_SET,2) + SHIFTED_CB_BITMANIP_BLOCK(0xd8,BIT_SET,3) + SHIFTED_CB_BITMANIP_BLOCK(0xe0,BIT_SET,4) + SHIFTED_CB_BITMANIP_BLOCK(0xe8,BIT_SET,5) + SHIFTED_CB_BITMANIP_BLOCK(0xf0,BIT_SET,6) + SHIFTED_CB_BITMANIP_BLOCK(0xf8,BIT_SET,7) + } +} + + +/* ---------------------------------------- NORMAL OPCODE DECODER +*/ +void Z80_Decode(Z80 *cpu, Z80Byte opcode) +{ + Z80Word *HL; + Z80Byte *H; + Z80Byte *L; + Z80Relative off; + + /* See if we've come here from a IX/IY shift + */ + switch (PRIV->shift) + { + case 0xdd: + HL=&(cpu->IX.w); + L=cpu->IX.b+LO; + H=cpu->IX.b+HI; + break; + case 0xfd: + HL=&(cpu->IY.w); + L=cpu->IY.b+LO; + H=cpu->IY.b+HI; + break; + default: + HL=&(cpu->HL.w); + L=cpu->HL.b+LO; + H=cpu->HL.b+HI; + break; + } + + switch(opcode) + { + case 0x00: /* NOP */ + TSTATE(4); + break; + + case 0x01: /* LD BC,nnnn */ + TSTATE(10); + cpu->BC.w=FETCH_WORD; + break; + + case 0x02: /* LD (BC),A */ + TSTATE(7); + POKE(cpu->BC.w,cpu->AF.b[HI]); + break; + + case 0x03: /* INC BC */ + TSTATE(6); + cpu->BC.w++; + break; + + case 0x04: /* INC B */ + TSTATE(4); + INC8(cpu->BC.b[HI]); + break; + + case 0x05: /* DEC B */ + TSTATE(4); + DEC8(cpu->BC.b[HI]); + break; + + case 0x06: /* LD B,n */ + TSTATE(7); + cpu->BC.b[HI]=FETCH_BYTE; + break; + + case 0x07: /* RLCA */ + TSTATE(4); + RLCA; + break; + + case 0x08: /* EX AF,AF' */ + TSTATE(4); + SWAP(cpu->AF.w,cpu->AF_); + break; + + case 0x09: /* ADD HL,BC */ + TSTATE(11); + ADD16(*HL,cpu->BC.w); + break; + + case 0x0a: /* LD A,(BC) */ + TSTATE(7); + cpu->AF.b[HI]=PEEK(cpu->BC.w); + break; + + case 0x0b: /* DEC BC */ + TSTATE(6); + cpu->BC.w--; + break; + + case 0x0c: /* INC C */ + TSTATE(4); + INC8(cpu->BC.b[LO]); + break; + + case 0x0d: /* DEC C */ + TSTATE(4); + DEC8(cpu->BC.b[LO]); + break; + + case 0x0e: /* LD C,n */ + TSTATE(7); + cpu->BC.b[LO]=FETCH_BYTE; + break; + + case 0x0f: /* RRCA */ + TSTATE(4); + RRCA; + break; + + case 0x10: /* DJNZ */ + if (--(cpu->BC.b[HI])) + { + TSTATE(13); + JR; + } + else + { + TSTATE(8); + NOJR; + } + break; + + case 0x11: /* LD DE,nnnn */ + TSTATE(10); + cpu->DE.w=FETCH_WORD; + break; + + case 0x12: /* LD (DE),A */ + TSTATE(7); + POKE(cpu->DE.w,cpu->AF.b[HI]); + break; + + case 0x13: /* INC DE */ + TSTATE(6); + cpu->DE.w++; + break; + + case 0x14: /* INC D */ + TSTATE(4); + INC8(cpu->DE.b[HI]); + break; + + case 0x15: /* DEC D */ + TSTATE(4); + DEC8(cpu->DE.b[HI]); + break; + + case 0x16: /* LD D,n */ + TSTATE(7); + cpu->DE.b[HI]=FETCH_BYTE; + break; + + case 0x17: /* RLA */ + TSTATE(4); + RLA; + break; + + case 0x18: /* JR d */ + TSTATE(12); + JR; + break; + + case 0x19: /* ADD HL,DE */ + TSTATE(11); + ADD16(*HL,cpu->DE.w); + break; + + case 0x1a: /* LD A,(DE) */ + TSTATE(7); + cpu->AF.b[HI]=PEEK(cpu->DE.w); + break; + + case 0x1b: /* DEC DE */ + TSTATE(6); + cpu->DE.w--; + break; + + case 0x1c: /* INC E */ + TSTATE(4); + INC8(cpu->DE.b[LO]); + break; + + case 0x1d: /* DEC E */ + TSTATE(4); + DEC8(cpu->DE.b[LO]); + break; + + case 0x1e: /* LD E,n */ + TSTATE(7); + cpu->DE.b[LO]=FETCH_BYTE; + break; + + case 0x1f: /* RRA */ + TSTATE(4); + RRA; + break; + + case 0x20: /* JR NZ,e */ + JR_COND(!IS_Z); + break; + + case 0x21: /* LD HL,nnnn */ + TSTATE(10); + *HL=FETCH_WORD; + break; + + case 0x22: /* LD (nnnn),HL */ + TSTATE(16); + POKEW(FETCH_WORD,*HL); + break; + + case 0x23: /* INC HL */ + TSTATE(6); + (*HL)++; + break; + + case 0x24: /* INC H */ + TSTATE(4); + INC8(*H); + break; + + case 0x25: /* DEC H */ + TSTATE(4); + DEC8(*H); + break; + + case 0x26: /* LD H,n */ + TSTATE(7); + *H=FETCH_BYTE; + break; + + case 0x27: /* DAA */ + TSTATE(4); + DAA(cpu); + break; + + case 0x28: /* JR Z,d */ + JR_COND(IS_Z); + break; + + case 0x29: /* ADD HL,HL */ + TSTATE(11); + ADD16(*HL,*HL); + break; + + case 0x2a: /* LD HL,(nnnn) */ + TSTATE(7); + *HL=PEEKW(FETCH_WORD); + break; + + case 0x2b: /* DEC HL */ + TSTATE(6); + (*HL)--; + break; + + case 0x2c: /* INC L */ + TSTATE(4); + INC8(*L); + break; + + case 0x2d: /* DEC L */ + TSTATE(4); + DEC8(*L); + break; + + case 0x2e: /* LD L,n */ + TSTATE(7); + *L=FETCH_BYTE; + break; + + case 0x2f: /* CPL */ + TSTATE(4); + cpu->AF.b[HI]^=0xff; + SETFLAG(H_Z80); + SETFLAG(N_Z80); + SETHIDDEN(cpu->AF.b[HI]); + break; + + case 0x30: /* JR NC,d */ + JR_COND(!IS_C); + break; + + case 0x31: /* LD SP,nnnn */ + TSTATE(10); + cpu->SP=FETCH_WORD; + break; + + case 0x32: /* LD (nnnn),A */ + TSTATE(13); + POKE(FETCH_WORD,cpu->AF.b[HI]); + break; + + case 0x33: /* INC SP */ + TSTATE(6); + cpu->SP++; + break; + + case 0x34: /* INC (HL) */ + TSTATE(11); + OFFSET(off); + OP_ON_MEM(INC8,*HL+off); + break; + + case 0x35: /* DEC (HL) */ + TSTATE(11); + OFFSET(off); + OP_ON_MEM(DEC8,*HL+off); + break; + + case 0x36: /* LD (HL),n */ + TSTATE(10); + OFFSET(off); + POKE(*HL+off,FETCH_BYTE); + break; + + case 0x37: /* SCF */ + TSTATE(4); + cpu->AF.b[LO]=(cpu->AF.b[LO]&(S_Z80|Z_Z80|P_Z80)) + | C_Z80 + | (cpu->AF.b[HI]&(B3_Z80|B5_Z80)); + break; + + case 0x38: /* JR C,d */ + JR_COND(IS_C); + break; + + case 0x39: /* ADD HL,SP */ + TSTATE(11); + ADD16(*HL,cpu->SP); + break; + + case 0x3a: /* LD A,(nnnn) */ + TSTATE(13); + cpu->AF.b[HI]=PEEK(FETCH_WORD); + break; + + case 0x3b: /* DEC SP */ + TSTATE(6); + cpu->SP--; + break; + + case 0x3c: /* INC A */ + TSTATE(4); + INC8(cpu->AF.b[HI]); + break; + + case 0x3d: /* DEC A */ + TSTATE(4); + DEC8(cpu->AF.b[HI]); + break; + + case 0x3e: /* LD A,n */ + TSTATE(7); + cpu->AF.b[HI]=FETCH_BYTE; + break; + + case 0x3f: /* CCF */ + TSTATE(4); + + if (CARRY) + SETFLAG(H_Z80); + else + CLRFLAG(H_Z80); + + cpu->AF.b[LO]^=C_Z80; + SETHIDDEN(cpu->AF.b[HI]); + break; + + LD_BLOCK(0x40,cpu->BC.b[HI],cpu->BC.b[HI]) + LD_BLOCK(0x48,cpu->BC.b[LO],cpu->BC.b[LO]) + LD_BLOCK(0x50,cpu->DE.b[HI],cpu->DE.b[HI]) + LD_BLOCK(0x58,cpu->DE.b[LO],cpu->DE.b[LO]) + LD_BLOCK(0x60,*H,cpu->HL.b[HI]) + LD_BLOCK(0x68,*L,cpu->HL.b[LO]) + + case 0x70: /* LD (HL),B */ + TSTATE(7); + OFFSET(off); + POKE(*HL+off,cpu->BC.b[HI]); + break; + + case 0x71: /* LD (HL),C */ + TSTATE(7); + OFFSET(off); + POKE(*HL+off,cpu->BC.b[LO]); + break; + + case 0x72: /* LD (HL),D */ + TSTATE(7); + OFFSET(off); + POKE(*HL+off,cpu->DE.b[HI]); + break; + + case 0x73: /* LD (HL),E */ + TSTATE(7); + OFFSET(off); + POKE(*HL+off,cpu->DE.b[LO]); + break; + + case 0x74: /* LD (HL),H */ + TSTATE(7); + OFFSET(off); + POKE(*HL+off,cpu->HL.b[HI]); + break; + + case 0x75: /* LD (HL),L */ + TSTATE(7); + OFFSET(off); + POKE(*HL+off,cpu->HL.b[LO]); + break; + + case 0x76: /* HALT */ + TSTATE(4); + cpu->PC--; + + if (!PRIV->halt) + CALLBACK(eZ80_Halt,1); + + PRIV->halt=TRUE; + break; + + case 0x77: /* LD (HL),A */ + TSTATE(7); + OFFSET(off); + POKE(*HL+off,cpu->AF.b[HI]); + break; + + LD_BLOCK(0x78,cpu->AF.b[HI],cpu->AF.b[HI]) + + ALU_BLOCK(0x80,ADD8) + ALU_BLOCK(0x88,ADC8) + ALU_BLOCK(0x90,SUB8) + ALU_BLOCK(0x98,SBC8) + ALU_BLOCK(0xa0,AND) + ALU_BLOCK(0xa8,XOR) + ALU_BLOCK(0xb0,OR) + ALU_BLOCK(0xb8,CMP8) + + case 0xc0: /* RET NZ */ + RET_COND(!IS_Z); + break; + + case 0xc1: /* POP BC */ + TSTATE(10); + POP(cpu->BC.w); + break; + + case 0xc2: /* JP NZ,nnnn */ + JP_COND(!IS_Z); + break; + + case 0xc3: /* JP nnnn */ + JP_COND(1); + break; + + case 0xc4: /* CALL NZ,nnnn */ + CALL_COND(!IS_Z); + break; + + case 0xc5: /* PUSH BC */ + TSTATE(10); + PUSH(cpu->BC.w); + break; + + case 0xc6: /* ADD A,n */ + TSTATE(7); + ADD8(FETCH_BYTE); + break; + + case 0xc7: /* RST 0 */ + RST(0); + break; + + case 0xc8: /* RET Z */ + RET_COND(IS_Z); + break; + + case 0xc9: /* RET */ + TSTATE(10); + POP(cpu->PC); + break; + + case 0xca: /* JP Z,nnnn */ + JP_COND(IS_Z); + break; + + case 0xcb: /* CB PREFIX */ + INC_R; + + /* Check for previous IX/IY shift. + */ + if (PRIV->shift!=0) + { + Z80Relative cb_offset; + + TSTATE(4); /* Wild stab in the dark! */ + cb_offset=FETCH_BYTE; + ShiftedDecodeCB(cpu,FETCH_BYTE,cb_offset); + } + else + { + DecodeCB(cpu,FETCH_BYTE); + } + break; + + case 0xcc: /* CALL Z,nnnn */ + CALL_COND(IS_Z); + break; + + case 0xcd: /* CALL nnnn */ + CALL_COND(1); + break; + + case 0xce: /* ADC A,n */ + ADC8(FETCH_BYTE); + break; + + case 0xcf: /* RST 8 */ + RST(8); + break; + + case 0xd0: /* RET NC */ + RET_COND(!IS_C); + break; + + case 0xd1: /* POP DE */ + TSTATE(10); + POP(cpu->DE.w); + break; + + case 0xd2: /* JP NC,nnnn */ + JP_COND(!IS_C); + break; + + case 0xd3: /* OUT (n),A */ + TSTATE(11); + if (PRIV->pwrite) + { + Z80Word port; + + port=FETCH_BYTE; + port|=(Z80Word)cpu->AF.b[HI]<<8; + PRIV->pwrite(cpu,port,cpu->AF.b[HI]); + } + else + cpu->PC++; + break; + + case 0xd4: /* CALL NC,nnnn */ + CALL_COND(!IS_C); + break; + + case 0xd5: /* PUSH DE */ + TSTATE(11); + PUSH(cpu->DE.w); + break; + + case 0xd6: /* SUB A,n */ + TSTATE(7); + SUB8(FETCH_BYTE); + break; + + case 0xd7: /* RST 10 */ + RST(0x10); + break; + + case 0xd8: /* RET C */ + RET_COND(IS_C); + break; + + case 0xd9: /* EXX */ + TSTATE(4); + SWAP(cpu->BC.w,cpu->BC_); + SWAP(cpu->DE.w,cpu->DE_); + SWAP(cpu->HL.w,cpu->HL_); + break; + + case 0xda: /* JP C,nnnn */ + JP_COND(IS_C); + break; + + case 0xdb: /* IN A,(n) */ + TSTATE(11); + if (PRIV->pread) + { + Z80Word port; + + port=FETCH_BYTE; + port|=(Z80Word)cpu->AF.b[HI]<<8; + cpu->AF.b[HI]=PRIV->pread(cpu,port); + } + else + cpu->PC++; + break; + + case 0xdc: /* CALL C,nnnn */ + CALL_COND(IS_C); + break; + + case 0xdd: /* DD PREFIX */ + TSTATE(4); + INC_R; + + PRIV->shift=opcode; + Z80_Decode(cpu,FETCH_BYTE); + break; + + case 0xde: /* SBC A,n */ + TSTATE(7); + SBC8(FETCH_BYTE); + break; + + case 0xdf: /* RST 18 */ + RST(0x18); + break; + + case 0xe0: /* RET PO */ + RET_COND(!IS_P); + break; + + case 0xe1: /* POP HL */ + TSTATE(10); + POP(*HL); + break; + + case 0xe2: /* JP PO,nnnn */ + JP_COND(!IS_P); + break; + + case 0xe3: /* EX (SP),HL */ + { + Z80Word tmp; + TSTATE(19); + POP(tmp); + PUSH(*HL); + *HL=tmp; + } + break; + + case 0xe4: /* CALL PO,nnnn */ + CALL_COND(!IS_P); + break; + + case 0xe5: /* PUSH HL */ + TSTATE(10); + PUSH(*HL); + break; + + case 0xe6: /* AND A,n */ + TSTATE(7); + AND(FETCH_BYTE); + break; + + case 0xe7: /* RST 20 */ + RST(0x20); + break; + + case 0xe8: /* RET PE */ + RET_COND(IS_P); + break; + + case 0xe9: /* JP (HL) */ + TSTATE(4); + cpu->PC=*HL; + break; + + case 0xea: /* JP PE,nnnn */ + JP_COND(IS_P); + break; + + case 0xeb: /* EX DE,HL */ + TSTATE(4); + SWAP(cpu->DE.w,*HL); + break; + + case 0xec: /* CALL PE,nnnn */ + CALL_COND(IS_P); + break; + + case 0xed: /* ED PREFIX */ + INC_R; + DecodeED(cpu,FETCH_BYTE); + break; + + case 0xee: /* XOR A,n */ + TSTATE(7); + XOR(FETCH_BYTE); + break; + + case 0xef: /* RST 28 */ + RST(0x28); + break; + + case 0xf0: /* RET P */ + RET_COND(!IS_S); + break; + + case 0xf1: /* POP AF */ + TSTATE(10); + POP(cpu->AF.w); + break; + + case 0xf2: /* JP P,nnnn */ + JP_COND(!IS_S); + break; + + case 0xf3: /* DI */ + TSTATE(4); + cpu->IFF1=0; + cpu->IFF2=0; + break; + + case 0xf4: /* CALL P,nnnn */ + CALL_COND(!IS_S); + break; + + case 0xf5: /* PUSH AF */ + TSTATE(10); + PUSH(cpu->AF.w); + break; + + case 0xf6: /* OR A,n */ + TSTATE(7); + OR(FETCH_BYTE); + break; + + case 0xf7: /* RST 30 */ + RST(0x30); + break; + + case 0xf8: /* RET M */ + RET_COND(IS_S); + break; + + case 0xf9: /* LD SP,HL */ + TSTATE(6); + cpu->SP=*HL; + break; + + case 0xfa: /* JP M,nnnn */ + JP_COND(IS_S); + break; + + case 0xfb: /* EI */ + TSTATE(4); + cpu->IFF1=1; + cpu->IFF2=1; + break; + + case 0xfc: /* CALL M,nnnn */ + CALL_COND(IS_S); + break; + + case 0xfd: /* FD PREFIX */ + TSTATE(4); + INC_R; + + PRIV->shift=opcode; + Z80_Decode(cpu,FETCH_BYTE); + break; + + case 0xfe: /* CP A,n */ + TSTATE(7); + CMP8(FETCH_BYTE); + break; + + case 0xff: /* RST 38 */ + RST(0x38); + break; + + } +} + + +/* END OF FILE */ diff --git a/src/z80_dis.c b/src/z80_dis.c new file mode 100644 index 0000000..28bc098 --- /dev/null +++ b/src/z80_dis.c @@ -0,0 +1,2494 @@ +/* + + z80 - Z80 Emulator + + Copyright (C) 2006 Ian Cowburn <ianc@noddybox.co.uk> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + ------------------------------------------------------------------------- + + $Id: z80_dis.c 4 2006-10-04 23:05:43Z ianc $ + +*/ +static const char ident[]="$Id: z80_dis.c 4 2006-10-04 23:05:43Z ianc $"; + +#include "z80_config.h" + +#ifdef ENABLE_DISASSEM + +#include <stdio.h> +#include <string.h> +#include <stdarg.h> + +#include "z80.h" +#include "z80_private.h" + +static Z80Relative cb_off; + +/* ---------------------------------------- SHARED ROUTINES +*/ +static const char *z80_dis_reg8[]={"b","c","d","e","h","l","(hl)","a"}; +static const char *z80_dis_reg16[]={"bc","de","hl","sp"}; +static const char *z80_dis_condition[]={"nz","z","nc","c","po","pe","p","m"}; + +static const char *dis_op; +static const char *dis_arg; + +const char *Z80_Dis_Printf(const char *format, ...) +{ + static int p=0; + static char s[16][80]; + va_list arg; + + va_start(arg,format); + p=(p+1)%16; + vsprintf(s[p],format,arg); + va_end(arg); + + return s[p]; +} + + +Z80Byte Z80_Dis_FetchByte(Z80 *cpu, Z80Word *pc) +{ +#ifdef ENABLE_ARRAY_MEMORY + return Z80_MEMORY[(*pc)++]; +#else + return cpu->priv->disread(cpu,(*pc)++); +#endif +} + + +Z80Word Z80_Dis_FetchWord(Z80 *cpu, Z80Word *pc) +{ + Z80Byte l,h; + + l=Z80_Dis_FetchByte(cpu,pc); + h=Z80_Dis_FetchByte(cpu,pc); + + return ((Z80Word)h<<8)|l; +} + + +void Z80_Dis_Set(const char *op, const char *arg) +{ + dis_op=op; + dis_arg=arg; +} + + +const char *Z80_Dis_GetOp(void) +{ + return dis_op ? dis_op : ""; +} + + +const char *Z80_Dis_GetArg(void) +{ + return dis_arg ? dis_arg : ""; +} + + +static const char *GetLabel(Z80Word w) +{ + if (z80_labels) + { + int f; + + for(f=0;z80_labels[f].label;f++) + { + if (z80_labels[f].address==w) + { + return z80_labels[f].label; + } + } + } + + return NULL; +} + + + +/* ---------------------------------------- CB xx BYTE OPCODES +*/ +static void DIS_RLC_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[op%8]; + Z80_Dis_Set("rlc",reg); +} + +static void DIS_RRC_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[op%8]; + Z80_Dis_Set("rrc",reg); +} + +static void DIS_RL_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[op%8]; + Z80_Dis_Set("rl",reg); +} + +static void DIS_RR_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[op%8]; + Z80_Dis_Set("rr",reg); +} + +static void DIS_SLA_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[op%8]; + Z80_Dis_Set("sla",reg); +} + +static void DIS_SRA_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[op%8]; + Z80_Dis_Set("sra",reg); +} + +static void DIS_SLL_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[op%8]; + Z80_Dis_Set("sll",reg); +} + +static void DIS_SRL_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[op%8]; + Z80_Dis_Set("srl",reg); +} + +static void DIS_BIT_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + int bit; + + reg=z80_dis_reg8[op%8]; + bit=(op-0x40)/8; + Z80_Dis_Set("bit",Z80_Dis_Printf("%d,%s",bit,reg)); +} + +static void DIS_RES_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + int bit; + + reg=z80_dis_reg8[op%8]; + bit=(op-0x80)/8; + Z80_Dis_Set("res",Z80_Dis_Printf("%d,%s",bit,reg)); +} + +static void DIS_SET_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + int bit; + + reg=z80_dis_reg8[op%8]; + bit=(op-0xc0)/8; + Z80_Dis_Set("set",Z80_Dis_Printf("%d,%s",bit,reg)); +} + +/* ---------------------------------------- DD OPCODES +*/ + +static const char *IX_RelStr(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + static char s[80]; + Z80Relative r; + + r=(Z80Relative)Z80_Dis_FetchByte(z80,pc); + + if (r<0) + sprintf(s,"(ix-$%.2x)",-r); + else + sprintf(s,"(ix+$%.2x)",r); + + return(s); +} + + +static const char *IX_RelStrCB(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + static char s[80]; + Z80Relative r; + + r=(Z80Relative)cb_off; + + if (r<0) + sprintf(s,"(ix-$%.2x)",-r); + else + sprintf(s,"(ix+$%.2x)",r); + + return(s); +} + + +static const char *XR8(Z80 *z80, int reg, Z80Word *pc) +{ + switch(reg) + { + case 0: + return("b"); + break; + case 1: + return("c"); + break; + case 2: + return("d"); + break; + case 3: + return("e"); + break; + case 4: + return("ixh"); + break; + case 5: + return("ixl"); + break; + case 6: + return(IX_RelStr(z80,0,pc)); + break; + case 7: + return("a"); + break; + default: + return(Z80_Dis_Printf("BUG %d",reg)); + break; + } +} + +static void DIS_DD_NOP(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + dis_opcode_z80[op](z80,op,pc); +} + +static void DIS_ADD_IX_BC(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("add","ix,bc"); +} + +static void DIS_ADD_IX_DE(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("add","ix,de"); +} + +static void DIS_LD_IX_WORD(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ld",Z80_Dis_Printf("ix,$%.4x",Z80_Dis_FetchWord(z80,pc))); +} + +static void DIS_LD_ADDR_IX(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80Word w; + const char *p; + + w=Z80_Dis_FetchWord(z80,pc); + + if ((p=GetLabel(w))) + Z80_Dis_Set("ld",Z80_Dis_Printf("(%s),ix",p)); + else + Z80_Dis_Set("ld",Z80_Dis_Printf("($%.4x),ix",w)); +} + +static void DIS_INC_IX(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("inc","ix"); +} + +static void DIS_INC_IXH(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("inc","ixh"); +} + +static void DIS_DEC_IXH(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("dec","ixh"); +} + +static void DIS_LD_IXH_BYTE(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ld",Z80_Dis_Printf("ixh,$%.2x",Z80_Dis_FetchByte(z80,pc))); +} + +static void DIS_ADD_IX_IX(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("add","ix,ix"); +} + +static void DIS_LD_IX_ADDR(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80Word w; + const char *p; + + w=Z80_Dis_FetchWord(z80,pc); + + if ((p=GetLabel(w))) + Z80_Dis_Set("ld",Z80_Dis_Printf("ix,(%s)",p)); + else + Z80_Dis_Set("ld",Z80_Dis_Printf("ix,($%.4x)",w)); +} + +static void DIS_DEC_IX(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("dec","ix"); +} + +static void DIS_INC_IXL(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("inc","ixl"); +} + +static void DIS_DEC_IXL(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("dec","ixl"); +} + +static void DIS_LD_IXL_BYTE(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ld",Z80_Dis_Printf("ixl,$%.2x",Z80_Dis_FetchByte(z80,pc))); +} + +static void DIS_INC_IIX(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("inc",Z80_Dis_Printf("%s",IX_RelStr(z80,op,pc))); +} + +static void DIS_DEC_IIX(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("dec",Z80_Dis_Printf("%s",IX_RelStr(z80,op,pc))); +} + +static void DIS_LD_IIX_BYTE(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *rel; + int b; + + rel=IX_RelStr(z80,op,pc); + b=Z80_Dis_FetchByte(z80,pc); + Z80_Dis_Set("ld",Z80_Dis_Printf("%s,$%.2x",rel,b)); +} + + +static void DIS_ADD_IX_SP(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("add","ix,sp"); +} + +static void DIS_XLD_R8_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int src_r,dest_r; + const char *src,*dest; + + dest_r=(op-0x40)/8; + src_r=op%8; + + /* IX can't be used as source and destination when reading z80ory + */ + if (dest_r==6) + { + dest=XR8(z80,dest_r,pc); + src=z80_dis_reg8[src_r]; + } + else if (((dest_r==4)||(dest_r==5))&&(src_r==6)) + { + dest=z80_dis_reg8[dest_r]; + src=XR8(z80,src_r,pc); + } + else + { + dest=XR8(z80,dest_r,pc); + src=XR8(z80,src_r,pc); + } + + Z80_Dis_Set("ld",Z80_Dis_Printf("%s,%s",dest,src)); +} + +static void DIS_XADD_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("add",Z80_Dis_Printf("a,%s",XR8(z80,(op%8),pc))); +} + +static void DIS_XADC_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("adc",Z80_Dis_Printf("a,%s",XR8(z80,(op%8),pc))); +} + +static void DIS_XSUB_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("sub",Z80_Dis_Printf("a,%s",XR8(z80,(op%8),pc))); +} + +static void DIS_XSBC_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("sbc",Z80_Dis_Printf("a,%s",XR8(z80,(op%8),pc))); +} + +static void DIS_XAND_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("and",Z80_Dis_Printf("%s",XR8(z80,(op%8),pc))); +} + +static void DIS_XXOR_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("xor",Z80_Dis_Printf("%s",XR8(z80,(op%8),pc))); +} + +static void DIS_X_OR_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("or",Z80_Dis_Printf("%s",XR8(z80,(op%8),pc))); +} + +static void DIS_XCP_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("cp",Z80_Dis_Printf("%s",XR8(z80,(op%8),pc))); +} + +static void DIS_POP_IX(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("pop","ix"); +} + +static void DIS_EX_ISP_IX(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ex","(sp),ix"); +} + +static void DIS_PUSH_IX(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("push","ix"); +} + +static void DIS_JP_IX(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("jp","(ix)"); +} + +static void DIS_LD_SP_IX(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ld","sp,ix"); +} + +static void DIS_DD_CB_DECODE(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int nop; + + cb_off=(Z80Relative)Z80_Dis_FetchByte(z80,pc); + nop=Z80_Dis_FetchByte(z80,pc); + dis_DD_CB_opcode[nop](z80,nop,pc); +} + +static void DIS_DD_DD_DECODE(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int nop; + + nop=Z80_Dis_FetchByte(z80,pc); + dis_DD_opcode[nop](z80,nop,pc); +} + +static void DIS_DD_ED_DECODE(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int nop; + + nop=Z80_Dis_FetchByte(z80,pc); + dis_ED_opcode[nop](z80,nop,pc); +} + +static void DIS_DD_FD_DECODE(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int nop; + + nop=Z80_Dis_FetchByte(z80,pc); + dis_FD_opcode[nop](z80,nop,pc); +} + + +/* ---------------------------------------- DD CB OPCODES +*/ + +static void DIS_RLC_IX (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + + reg=(op%8); + + if (reg==6) + Z80_Dis_Set("rlc",Z80_Dis_Printf("%s",IX_RelStrCB(z80,op,pc))); + else + { + Z80_Dis_Set("rlc",Z80_Dis_Printf("%s[%s]",IX_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); + } +} + +static void DIS_RRC_IX (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + + reg=(op%8); + + if (reg==6) + Z80_Dis_Set("rrc",Z80_Dis_Printf("%s",IX_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("rrc",Z80_Dis_Printf("%s[%s]",IX_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_RL_IX (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + + reg=(op%8); + + if (reg==6) + Z80_Dis_Set("rl",Z80_Dis_Printf("%s",IX_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("rl",Z80_Dis_Printf("%s[%s]",IX_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_RR_IX (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + + reg=(op%8); + + if (reg==6) + Z80_Dis_Set("rr",Z80_Dis_Printf("%s",IX_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("rr",Z80_Dis_Printf("%s[%s]",IX_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_SLA_IX (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + + reg=(op%8); + + if (reg==6) + Z80_Dis_Set("sla",Z80_Dis_Printf("%s",IX_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("sla",Z80_Dis_Printf("%s[%s]",IX_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_SRA_IX (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + + reg=(op%8); + + if (reg==6) + Z80_Dis_Set("sra",Z80_Dis_Printf("%s",IX_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("sra",Z80_Dis_Printf("%s[%s]",IX_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_SRL_IX (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + + reg=(op%8); + + if (reg==6) + Z80_Dis_Set("srl",Z80_Dis_Printf("%s",IX_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("srl",Z80_Dis_Printf("%s[%s]",IX_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_SLL_IX (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + + reg=(op%8); + + if (reg==6) + Z80_Dis_Set("sll",Z80_Dis_Printf("%s",IX_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("sll",Z80_Dis_Printf("%s[%s]",IX_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_BIT_IX (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + int bit; + + reg=(op%8); + bit=(op-0x40)/8; + + if (reg==6) + Z80_Dis_Set("bit",Z80_Dis_Printf("%d,%s",bit,IX_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("bit",Z80_Dis_Printf("%d,%s[%s]",bit,IX_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_RES_IX (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + int bit; + + reg=(op%8); + bit=(op-0x80)/8; + + if (reg==6) + Z80_Dis_Set("res",Z80_Dis_Printf("%d,%s",bit,IX_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("res",Z80_Dis_Printf("%d,%s[%s]",bit,IX_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_SET_IX (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + int bit; + + reg=(op%8); + bit=(op-0xc0)/8; + + if (reg==6) + Z80_Dis_Set("set",Z80_Dis_Printf("%d,%s",bit,IX_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("set",Z80_Dis_Printf("%d,%s[%s]",bit,IX_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + + +/* ---------------------------------------- ED OPCODES +*/ + +static const char *ER8(int reg) +{ + switch(reg) + { + case 0: + return("b"); + break; + case 1: + return("c"); + break; + case 2: + return("d"); + break; + case 3: + return("e"); + break; + case 4: + return("h"); + break; + case 5: + return("l"); + break; + case 6: + return("0"); + break; + case 7: + return("a"); + break; + } + + return "?"; +} + +/* Assumes illegal ED ops are being used for break points +*/ +static void DIS_ED_NOP(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("brk",Z80_Dis_Printf("$%.2x",op)); +} + +static void DIS_IN_R8_C(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("in",Z80_Dis_Printf("%s,(c)",ER8((op-0x40)/8))); +} + +static void DIS_OUT_C_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("out",Z80_Dis_Printf("(c),%s",ER8((op-0x40)/8))); +} + +static void DIS_SBC_HL_R16(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("sbc",Z80_Dis_Printf("hl,%s",z80_dis_reg16[(op-0x40)/16])); +} + +static void DIS_ED_LD_ADDR_R16(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80Word w; + const char *p; + + w=Z80_Dis_FetchWord(z80,pc); + + if ((p=GetLabel(w))) + Z80_Dis_Set("ld",Z80_Dis_Printf("(%s),%s",p,z80_dis_reg16[(op-0x40)/16])); + else + Z80_Dis_Set("ld",Z80_Dis_Printf("($%.4x),%s",w,z80_dis_reg16[(op-0x40)/16])); +} + +static void DIS_NEG(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("neg",NULL); +} + +static void DIS_RETN(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("retn",NULL); +} + +static void DIS_IM_0(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("im","0"); +} + +static void DIS_LD_I_A(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ld","i,a"); +} + +static void DIS_ADC_HL_R16(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("adc",Z80_Dis_Printf("hl,%s",z80_dis_reg16[(op-0x40)/16])); +} + +static void DIS_ED_LD_R16_ADDR(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80Word w; + const char *p; + + w=Z80_Dis_FetchWord(z80,pc); + + if ((p=GetLabel(w))) + Z80_Dis_Set("ld",Z80_Dis_Printf("%s,(%s)",z80_dis_reg16[(op-0x40)/16],p)); + else + Z80_Dis_Set("ld",Z80_Dis_Printf("%s,($%.4x)",z80_dis_reg16[(op-0x40)/16],w)); +} + +static void DIS_RETI(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("reti",NULL); +} + +static void DIS_LD_R_A(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ld","r,a"); +} + +static void DIS_IM_1(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("im","1"); +} + +static void DIS_LD_A_I(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ld","a,i"); +} + +static void DIS_IM_2(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("im","2"); +} + +static void DIS_LD_A_R(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ld","a,r"); +} + +static void DIS_RRD(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("rrd",NULL); +} + +static void DIS_RLD(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("rld",NULL); +} + +static void DIS_LDI(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ldi",NULL); +} + +static void DIS_CPI(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("cpi",NULL); +} + +static void DIS_INI(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ini",NULL); +} + +static void DIS_OUTI(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("outi",NULL); +} + +static void DIS_LDD(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ldd",NULL); +} + +static void DIS_CPD(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("cpd",NULL); +} + +static void DIS_IND(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ind",NULL); +} + +static void DIS_OUTD(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("outd",NULL); +} + +static void DIS_LDIR(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ldir",NULL); +} + +static void DIS_CPIR(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("cpir",NULL); +} + +static void DIS_INIR(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("inir",NULL); +} + +static void DIS_OTIR(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("otir",NULL); +} + +static void DIS_LDDR(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("lddr",NULL); +} + +static void DIS_CPDR(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("cpdr",NULL); +} + +static void DIS_INDR(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("indr",NULL); +} + +static void DIS_OTDR(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("otdr",NULL); +} + + +/* ---------------------------------------- FD OPCODES +*/ + +static const char *IY_RelStr(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + static char s[80]; + Z80Relative r; + + r=(Z80Relative)Z80_Dis_FetchByte(z80,pc); + + if (r<0) + sprintf(s,"(iy-$%.2x)",-r); + else + sprintf(s,"(iy+$%.2x)",r); + + return(s); +} + + +static const char *IY_RelStrCB(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + static char s[80]; + Z80Relative r; + + r=(Z80Relative)cb_off; + + if (r<0) + sprintf(s,"(iy-$%.2x)",-r); + else + sprintf(s,"(iy+$%.2x)",r); + + return(s); +} + + +static const char *YR8(Z80 *z80, int reg, Z80Word *pc) +{ + switch(reg) + { + case 0: + return("b"); + break; + case 1: + return("c"); + break; + case 2: + return("d"); + break; + case 3: + return("e"); + break; + case 4: + return("iyh"); + break; + case 5: + return("iyl"); + break; + case 6: + return(IY_RelStr(z80,0,pc)); + break; + case 7: + return("a"); + break; + default: + return(Z80_Dis_Printf("BUG %d",reg)); + break; + } +} + +static void DIS_FD_NOP(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + dis_opcode_z80[op](z80,op,pc); +} + +static void DIS_ADD_IY_BC(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("add","iy,bc"); +} + +static void DIS_ADD_IY_DE(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("add","iy,de"); +} + +static void DIS_LD_IY_WORD(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ld",Z80_Dis_Printf("iy,$%.4x",Z80_Dis_FetchWord(z80,pc))); +} + +static void DIS_LD_ADDR_IY(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80Word w; + const char *p; + + w=Z80_Dis_FetchWord(z80,pc); + + if ((p=GetLabel(w))) + Z80_Dis_Set("ld",Z80_Dis_Printf("(%s),iy",p)); + else + Z80_Dis_Set("ld",Z80_Dis_Printf("($%.4x),iy",w)); +} + +static void DIS_INC_IY(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("inc","iy"); +} + +static void DIS_INC_IYH(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("inc","iyh"); +} + +static void DIS_DEC_IYH(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("dec","iyh"); +} + +static void DIS_LD_IYH_BYTE(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ld",Z80_Dis_Printf("iyh,$%.2x",Z80_Dis_FetchByte(z80,pc))); +} + +static void DIS_ADD_IY_IY(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("add","iy,iy"); +} + +static void DIS_LD_IY_ADDR(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80Word w; + const char *p; + + w=Z80_Dis_FetchWord(z80,pc); + + if ((p=GetLabel(w))) + Z80_Dis_Set("ld",Z80_Dis_Printf("iy,(%s)",p)); + else + Z80_Dis_Set("ld",Z80_Dis_Printf("iy,($%.4x)",w)); +} + +static void DIS_DEC_IY(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("dec","iy"); +} + +static void DIS_INC_IYL(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("inc","iyl"); +} + +static void DIS_DEC_IYL(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("dec","iyl"); +} + +static void DIS_LD_IYL_BYTE(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ld",Z80_Dis_Printf("iyl,$%.2x",Z80_Dis_FetchByte(z80,pc))); +} + +static void DIS_INC_IIY(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("inc",Z80_Dis_Printf("%s",IY_RelStr(z80,op,pc))); +} + +static void DIS_DEC_IIY(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("dec",Z80_Dis_Printf("%s",IY_RelStr(z80,op,pc))); +} + +static void DIS_LD_IIY_BYTE(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *rel; + int b; + + rel=IY_RelStr(z80,op,pc); + b=Z80_Dis_FetchByte(z80,pc); + Z80_Dis_Set("ld",Z80_Dis_Printf("%s,$%.2x",rel,b)); +} + + +static void DIS_ADD_IY_SP(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("add","iy,sp"); +} + +static void DIS_YLD_R8_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int src_r,dest_r; + const char *src,*dest; + + dest_r=(op-0x40)/8; + src_r=op%8; + + /* IY can't be used as source and destination when reading z80ory + */ + if (dest_r==6) + { + dest=YR8(z80,dest_r,pc); + src=z80_dis_reg8[src_r]; + } + else if (((dest_r==4)||(dest_r==5))&&(src_r==6)) + { + dest=z80_dis_reg8[dest_r]; + src=YR8(z80,src_r,pc); + } + else + { + dest=YR8(z80,dest_r,pc); + src=YR8(z80,src_r,pc); + } + + Z80_Dis_Set("ld",Z80_Dis_Printf("%s,%s",dest,src)); +} + +static void DIS_YADD_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("add",Z80_Dis_Printf("a,%s",YR8(z80,(op%8),pc))); +} + +static void DIS_YADC_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("adc",Z80_Dis_Printf("a,%s",YR8(z80,(op%8),pc))); +} + +static void DIS_YSUB_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("sub",Z80_Dis_Printf("a,%s",YR8(z80,(op%8),pc))); +} + +static void DIS_YSBC_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("sbc",Z80_Dis_Printf("a,%s",YR8(z80,(op%8),pc))); +} + +static void DIS_YAND_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("and",Z80_Dis_Printf("%s",YR8(z80,(op%8),pc))); +} + +static void DIS_YYOR_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("xor",Z80_Dis_Printf("%s",YR8(z80,(op%8),pc))); +} + +static void DIS_Y_OR_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("or",Z80_Dis_Printf("%s",YR8(z80,(op%8),pc))); +} + +static void DIS_YCP_R8(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("cp",Z80_Dis_Printf("%s",YR8(z80,(op%8),pc))); +} + +static void DIS_POP_IY(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("pop","iy"); +} + +static void DIS_EY_ISP_IY(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ex","(sp),iy"); +} + +static void DIS_PUSH_IY(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("push","iy"); +} + +static void DIS_JP_IY(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("jp","(iy)"); +} + +static void DIS_LD_SP_IY(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ld","sp,iy"); +} + +static void DIS_FD_CB_DECODE(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int nop; + + cb_off=(Z80Relative)Z80_Dis_FetchByte(z80,pc); + nop=Z80_Dis_FetchByte(z80,pc); + dis_FD_CB_opcode[nop](z80,nop,pc); +} + +static void DIS_FD_DD_DECODE(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int nop; + + nop=Z80_Dis_FetchByte(z80,pc); + dis_DD_opcode[nop](z80,nop,pc); +} + +static void DIS_FD_ED_DECODE(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int nop; + + nop=Z80_Dis_FetchByte(z80,pc); + dis_ED_opcode[nop](z80,nop,pc); +} + +static void DIS_FD_FD_DECODE(Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int nop; + + nop=Z80_Dis_FetchByte(z80,pc); + dis_FD_opcode[nop](z80,nop,pc); +} + + +/* ---------------------------------------- FD CB OPCODES +*/ + +static void DIS_RLC_IY (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + + reg=(op%8); + + if (reg==6) + Z80_Dis_Set("rlc",Z80_Dis_Printf("%s",IY_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("rlc",Z80_Dis_Printf("%s[%s]",IY_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_RRC_IY (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + + reg=(op%8); + + if (reg==6) + Z80_Dis_Set("rrc",Z80_Dis_Printf("%s",IY_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("rrc",Z80_Dis_Printf("%s[%s]",IY_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_RL_IY (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + + reg=(op%8); + + if (reg==6) + Z80_Dis_Set("rl",Z80_Dis_Printf("%s",IY_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("rl",Z80_Dis_Printf("%s[%s]",IY_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_RR_IY (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + + reg=(op%8); + + if (reg==6) + Z80_Dis_Set("rr",Z80_Dis_Printf("%s",IY_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("rr",Z80_Dis_Printf("%s[%s]",IY_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_SLA_IY (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + + reg=(op%8); + + if (reg==6) + Z80_Dis_Set("sla",Z80_Dis_Printf("%s",IY_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("sla",Z80_Dis_Printf("%s[%s]",IY_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_SRA_IY (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + + reg=(op%8); + + if (reg==6) + Z80_Dis_Set("sra",Z80_Dis_Printf("%s",IY_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("sra",Z80_Dis_Printf("%s[%s]",IY_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_SRL_IY (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + + reg=(op%8); + + if (reg==6) + Z80_Dis_Set("srl",Z80_Dis_Printf("%s",IY_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("srl",Z80_Dis_Printf("%s[%s]",IY_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_SLL_IY (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + + reg=(op%8); + + if (reg==6) + Z80_Dis_Set("sll",Z80_Dis_Printf("%s",IY_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("sll",Z80_Dis_Printf("%s[%s]",IY_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_BIT_IY (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + int bit; + + reg=(op%8); + bit=(op-0x40)/8; + + if (reg==6) + Z80_Dis_Set("bit",Z80_Dis_Printf("%d,%s",bit,IY_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("bit",Z80_Dis_Printf("%d,%s[%s]",bit,IY_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_RES_IY (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + int bit; + + reg=(op%8); + bit=(op-0x80)/8; + + if (reg==6) + Z80_Dis_Set("res",Z80_Dis_Printf("%d,%s",bit,IY_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("res",Z80_Dis_Printf("%d,%s[%s]",bit,IY_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + +static void DIS_SET_IY (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int reg; + int bit; + + reg=(op%8); + bit=(op-0xc0)/8; + + if (reg==6) + Z80_Dis_Set("set",Z80_Dis_Printf("%d,%s",bit,IY_RelStrCB(z80,op,pc))); + else + Z80_Dis_Set("set",Z80_Dis_Printf("%d,%s[%s]",bit,IY_RelStrCB(z80,op,pc),z80_dis_reg8[reg])); +} + + +/* ---------------------------------------- SINGLE BYTE OPCODES +*/ +static void DIS_NOP (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("nop",NULL); +} + +static void DIS_LD_R16_WORD (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg16[(op&0x30)/0x10]; + Z80_Dis_Set("ld",Z80_Dis_Printf("%s,$%.4x",reg,Z80_Dis_FetchWord(z80,pc))); +} + +static void DIS_LD_R16_A (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg16[(op&0x30)/0x10]; + Z80_Dis_Set("ld",Z80_Dis_Printf("(%s),a",reg)); +} + +static void DIS_INC_R16 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg16[(op&0x30)/0x10]; + Z80_Dis_Set("inc",reg); +} + +static void DIS_INC_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[(op&0x38)/0x8]; + Z80_Dis_Set("inc",reg); +} + +static void DIS_DEC_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[(op&0x38)/0x8]; + Z80_Dis_Set("dec",reg); +} + +static void DIS_LD_R8_BYTE (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[(op&0x38)/0x8]; + Z80_Dis_Set("ld",Z80_Dis_Printf("%s,$%.2x",reg,Z80_Dis_FetchByte(z80,pc))); +} + +static void DIS_RLCA (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("rlca",NULL); +} + +static void DIS_EX_AF_AF (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ex","af,af'"); +} + +static void DIS_ADD_HL_R16 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg16[(op&0x30)/0x10]; + Z80_Dis_Set("add",Z80_Dis_Printf("hl,%s",reg)); +} + +static void DIS_LD_A_R16 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg16[(op&0x30)/0x10]; + Z80_Dis_Set("ld",Z80_Dis_Printf("a,(%s)",reg)); +} + +static void DIS_DEC_R16 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg16[(op&0x30)/0x10]; + Z80_Dis_Set("dec",reg); +} + +static void DIS_RRCA (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("rrca",NULL); +} + +static void DIS_DJNZ (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80Word new; + +#ifdef ENABLE_ARRAY_MEMORY + new=*pc+(Z80Relative)Z80_MEMORY[*pc]+1; +#else + new=*pc+(Z80Relative)z80->priv->disread(z80,*pc)+1; +#endif + (*pc)++; + Z80_Dis_Set("djnz",Z80_Dis_Printf("$%.4x",new)); +} + +static void DIS_RLA (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("rla",NULL); +} + +static void DIS_JR (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80Word new; + const char *p; + +#ifdef ENABLE_ARRAY_MEMORY + new=*pc+(Z80Relative)Z80_MEMORY[*pc]+1; +#else + new=*pc+(Z80Relative)z80->priv->disread(z80,*pc)+1; +#endif + (*pc)++; + + if ((p=GetLabel(new))) + Z80_Dis_Set("jr",Z80_Dis_Printf("%s",p)); + else + Z80_Dis_Set("jr",Z80_Dis_Printf("$%.4x",new)); +} + +static void DIS_RRA (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("rra",NULL); +} + +static void DIS_JR_CO (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *con; + Z80Word new; + const char *p; + + con=z80_dis_condition[(op-0x20)/8]; +#ifdef ENABLE_ARRAY_MEMORY + new=*pc+(Z80Relative)Z80_MEMORY[*pc]+1; +#else + new=*pc+(Z80Relative)z80->priv->disread(z80,*pc)+1; +#endif + (*pc)++; + + if ((p=GetLabel(new))) + Z80_Dis_Set("jr",Z80_Dis_Printf("%s,%s",con,p)); + else + Z80_Dis_Set("jr",Z80_Dis_Printf("%s,$%.4x",con,new)); +} + +static void DIS_LD_ADDR_HL (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80Word w; + const char *p; + + w=Z80_Dis_FetchWord(z80,pc); + + if ((p=GetLabel(w))) + Z80_Dis_Set("ld",Z80_Dis_Printf("(%s),hl",p)); + else + Z80_Dis_Set("ld",Z80_Dis_Printf("($%.4x),hl",w)); +} + +static void DIS_DAA (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("daa",NULL); +} + +static void DIS_LD_HL_ADDR (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80Word w; + const char *p; + + w=Z80_Dis_FetchWord(z80,pc); + + if ((p=GetLabel(w))) + Z80_Dis_Set("ld",Z80_Dis_Printf("hl,(%s)",p)); + else + Z80_Dis_Set("ld",Z80_Dis_Printf("hl,($%.4x)",w)); +} + +static void DIS_CPL (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("cpl",NULL); +} + +static void DIS_LD_ADDR_A (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80Word w; + const char *p; + + w=Z80_Dis_FetchWord(z80,pc); + + if ((p=GetLabel(w))) + Z80_Dis_Set("ld",Z80_Dis_Printf("(%s),a",p)); + else + Z80_Dis_Set("ld",Z80_Dis_Printf("($%.4x),a",w)); +} + +static void DIS_SCF (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("scf",NULL); +} + +static void DIS_LD_A_ADDR (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80Word w; + const char *p; + + w=Z80_Dis_FetchWord(z80,pc); + + if ((p=GetLabel(w))) + Z80_Dis_Set("ld",Z80_Dis_Printf("a,(%s)",p)); + else + Z80_Dis_Set("ld",Z80_Dis_Printf("a,($%.4x)",w)); +} + +static void DIS_CCF (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ccf",NULL); +} + +static void DIS_LD_R8_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *src,*dest; + + dest=z80_dis_reg8[(op-0x40)/8]; + src=z80_dis_reg8[op%8]; + Z80_Dis_Set("ld",Z80_Dis_Printf("%s,%s",dest,src)); +} + +static void DIS_HALT (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("halt",NULL); +} + +static void DIS_ADD_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[op%8]; + Z80_Dis_Set("add",Z80_Dis_Printf("a,%s",reg)); +} + +static void DIS_ADC_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[op%8]; + Z80_Dis_Set("adc",Z80_Dis_Printf("a,%s",reg)); +} + +static void DIS_SUB_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[op%8]; + Z80_Dis_Set("sub",Z80_Dis_Printf("a,%s",reg)); +} + +static void DIS_SBC_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[op%8]; + Z80_Dis_Set("sbc",Z80_Dis_Printf("a,%s",reg)); +} + +static void DIS_AND_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[op%8]; + Z80_Dis_Set("and",Z80_Dis_Printf("%s",reg)); +} + +static void DIS_XOR_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[op%8]; + Z80_Dis_Set("xor",Z80_Dis_Printf("%s",reg)); +} + +static void DIS_OR_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[op%8]; + Z80_Dis_Set("or",Z80_Dis_Printf("%s",reg)); +} + +static void DIS_CP_R8 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg8[op%8]; + Z80_Dis_Set("cp",Z80_Dis_Printf("%s",reg)); +} + + +static void DIS_RET_CO (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *con; + + con=z80_dis_condition[(op-0xc0)/8]; + Z80_Dis_Set("ret",con); +} + +static void DIS_POP_R16 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg16[(op-0xc0)/16]; + + if (!strcmp(reg,"sp")) + reg="af"; + + Z80_Dis_Set("pop",reg); +} + +static void DIS_JP (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80Word w; + const char *p; + + w=Z80_Dis_FetchWord(z80,pc); + + if ((p=GetLabel(w))) + Z80_Dis_Set("jp",Z80_Dis_Printf("%s",p)); + else + Z80_Dis_Set("jp",Z80_Dis_Printf("$%.4x",w)); +} + +static void DIS_PUSH_R16 (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *reg; + + reg=z80_dis_reg16[(op-0xc0)/16]; + + if (!strcmp(reg,"sp")) + reg="af"; + + Z80_Dis_Set("push",reg); +} + +static void DIS_ADD_A_BYTE (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("add",Z80_Dis_Printf("a,$%.2x",Z80_Dis_FetchByte(z80,pc))); +} + +static void DIS_RST (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int add; + + add=(op&0x3f)-7; + Z80_Dis_Set("rst",Z80_Dis_Printf("%.2xh",add)); +} + +static void DIS_RET (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ret",NULL); +} + +static void DIS_JP_CO (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *con; + Z80Word w; + const char *p; + + w=Z80_Dis_FetchWord(z80,pc); + con=z80_dis_condition[(op-0xc0)/8]; + + if ((p=GetLabel(w))) + Z80_Dis_Set("jp",Z80_Dis_Printf("%s,%s",con,p)); + else + Z80_Dis_Set("jp",Z80_Dis_Printf("%s,$%.4x",con,w)); +} + +static void DIS_CB_DECODE (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int nop; + + nop=Z80_Dis_FetchByte(z80,pc); + dis_CB_opcode[nop](z80,nop,pc); +} + +static void DIS_CALL_CO (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + const char *con; + Z80Word w; + const char *p; + + w=Z80_Dis_FetchWord(z80,pc); + con=z80_dis_condition[(op-0xc0)/8]; + + if ((p=GetLabel(w))) + Z80_Dis_Set("call",Z80_Dis_Printf("%s,%s",con,p)); + else + Z80_Dis_Set("call",Z80_Dis_Printf("%s,$%.4x",con,w)); +} + +static void DIS_CALL (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80Word w; + const char *p; + + w=Z80_Dis_FetchWord(z80,pc); + + if ((p=GetLabel(w))) + Z80_Dis_Set("call",Z80_Dis_Printf("%s",p)); + else + Z80_Dis_Set("call",Z80_Dis_Printf("$%.4x",w)); +} + +static void DIS_ADC_A_BYTE (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("adc",Z80_Dis_Printf("a,$%.2x",Z80_Dis_FetchByte(z80,pc))); +} + +static void DIS_OUT_BYTE_A (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("out",Z80_Dis_Printf("($%.2x),a",Z80_Dis_FetchByte(z80,pc))); +} + +static void DIS_SUB_A_BYTE (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("sub",Z80_Dis_Printf("a,$%.2x",Z80_Dis_FetchByte(z80,pc))); +} + +static void DIS_EXX (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("exx",NULL); +} + +static void DIS_IN_A_BYTE (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("in",Z80_Dis_Printf("a,($%.2x)",Z80_Dis_FetchByte(z80,pc))); +} + +static void DIS_DD_DECODE (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int nop; + + nop=Z80_Dis_FetchByte(z80,pc); + dis_DD_opcode[nop](z80,nop,pc); +} + +static void DIS_SBC_A_BYTE (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("sbc",Z80_Dis_Printf("a,$%.2x",Z80_Dis_FetchByte(z80,pc))); +} + + +static void DIS_EX_ISP_HL (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ex","(sp),hl"); +} + +static void DIS_AND_A_BYTE (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("and",Z80_Dis_Printf("$%.2x",Z80_Dis_FetchByte(z80,pc))); +} + +static void DIS_JP_HL (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("jp","(hl)"); +} + +static void DIS_EX_DE_HL (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ex","de,hl"); +} + +static void DIS_ED_DECODE (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int nop; + + nop=Z80_Dis_FetchByte(z80,pc); + dis_ED_opcode[nop](z80,nop,pc); +} + +static void DIS_XOR_A_BYTE (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("xor",Z80_Dis_Printf("$%.2x",Z80_Dis_FetchByte(z80,pc))); +} + +static void DIS_DI (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("di",NULL); +} + +static void DIS_OR_A_BYTE (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("or",Z80_Dis_Printf("$%.2x",Z80_Dis_FetchByte(z80,pc))); +} + +static void DIS_LD_SP_HL (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ld","sp,hl"); +} + +static void DIS_EI (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("ei",NULL); +} + +static void DIS_FD_DECODE (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + int nop; + + nop=Z80_Dis_FetchByte(z80,pc); + dis_FD_opcode[nop](z80,nop,pc); +} + +static void DIS_CP_A_BYTE (Z80 *z80, Z80Byte op, Z80Word *pc) +{ + Z80_Dis_Set("cp",Z80_Dis_Printf("$%.2x",Z80_Dis_FetchByte(z80,pc))); +} + + +/* ---------------------------------------- TABLES +*/ + +/* CB opcodes +*/ +DIS_OP_CALLBACK dis_CB_opcode[0x100]= + { +/* 0x00 - 0x03 */ DIS_RLC_R8, DIS_RLC_R8, DIS_RLC_R8, DIS_RLC_R8, +/* 0x04 - 0x07 */ DIS_RLC_R8, DIS_RLC_R8, DIS_RLC_R8, DIS_RLC_R8, +/* 0x08 - 0x0b */ DIS_RRC_R8, DIS_RRC_R8, DIS_RRC_R8, DIS_RRC_R8, +/* 0x0c - 0x0f */ DIS_RRC_R8, DIS_RRC_R8, DIS_RRC_R8, DIS_RRC_R8, + +/* 0x10 - 0x13 */ DIS_RL_R8, DIS_RL_R8, DIS_RL_R8, DIS_RL_R8, +/* 0x14 - 0x17 */ DIS_RL_R8, DIS_RL_R8, DIS_RL_R8, DIS_RL_R8, +/* 0x18 - 0x1b */ DIS_RR_R8, DIS_RR_R8, DIS_RR_R8, DIS_RR_R8, +/* 0x1c - 0x1f */ DIS_RR_R8, DIS_RR_R8, DIS_RR_R8, DIS_RR_R8, + +/* 0x20 - 0x23 */ DIS_SLA_R8, DIS_SLA_R8, DIS_SLA_R8, DIS_SLA_R8, +/* 0x24 - 0x27 */ DIS_SLA_R8, DIS_SLA_R8, DIS_SLA_R8, DIS_SLA_R8, +/* 0x28 - 0x2b */ DIS_SRA_R8, DIS_SRA_R8, DIS_SRA_R8, DIS_SRA_R8, +/* 0x2c - 0x2f */ DIS_SRA_R8, DIS_SRA_R8, DIS_SRA_R8, DIS_SRA_R8, + +/* 0x30 - 0x33 */ DIS_SLL_R8, DIS_SLL_R8, DIS_SLL_R8, DIS_SLL_R8, +/* 0x34 - 0x37 */ DIS_SLL_R8, DIS_SLL_R8, DIS_SLL_R8, DIS_SLL_R8, +/* 0x38 - 0x3b */ DIS_SRL_R8, DIS_SRL_R8, DIS_SRL_R8, DIS_SRL_R8, +/* 0x3c - 0x3f */ DIS_SRL_R8, DIS_SRL_R8, DIS_SRL_R8, DIS_SRL_R8, + +/* 0x40 - 0x43 */ DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, +/* 0x44 - 0x47 */ DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, +/* 0x48 - 0x4b */ DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, +/* 0x4c - 0x4f */ DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, + +/* 0x50 - 0x53 */ DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, +/* 0x54 - 0x57 */ DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, +/* 0x58 - 0x5b */ DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, +/* 0x5c - 0x5f */ DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, + +/* 0x60 - 0x63 */ DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, +/* 0x64 - 0x67 */ DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, +/* 0x68 - 0x6b */ DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, +/* 0x6c - 0x6f */ DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, + +/* 0x70 - 0x73 */ DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, +/* 0x74 - 0x77 */ DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, +/* 0x78 - 0x7b */ DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, +/* 0x7c - 0x7f */ DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, DIS_BIT_R8, + +/* 0x80 - 0x83 */ DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, +/* 0x84 - 0x87 */ DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, +/* 0x88 - 0x8b */ DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, +/* 0x8c - 0x8f */ DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, + +/* 0x90 - 0x93 */ DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, +/* 0x94 - 0x97 */ DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, +/* 0x98 - 0x9b */ DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, +/* 0x9c - 0x9f */ DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, + +/* 0xa0 - 0xa3 */ DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, +/* 0xa4 - 0xa7 */ DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, +/* 0xa8 - 0xab */ DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, +/* 0xac - 0xaf */ DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, + +/* 0xb0 - 0xb3 */ DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, +/* 0xb4 - 0xb7 */ DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, +/* 0xb8 - 0xbb */ DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, +/* 0xbc - 0xbf */ DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, DIS_RES_R8, + +/* 0xc0 - 0xc3 */ DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, +/* 0xc4 - 0xc7 */ DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, +/* 0xc8 - 0xcb */ DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, +/* 0xcc - 0xcf */ DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, + +/* 0xd0 - 0xd3 */ DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, +/* 0xd4 - 0xd7 */ DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, +/* 0xd8 - 0xdb */ DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, +/* 0xdc - 0xdf */ DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, + +/* 0xe0 - 0xe3 */ DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, +/* 0xe4 - 0xe7 */ DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, +/* 0xe8 - 0xeb */ DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, +/* 0xec - 0xef */ DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, + +/* 0xf0 - 0xf3 */ DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, +/* 0xf4 - 0xf7 */ DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, +/* 0xf8 - 0xfb */ DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, +/* 0xfc - 0xff */ DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, DIS_SET_R8, + }; + +/* DIS_DD opcodes +*/ +DIS_OP_CALLBACK dis_DD_opcode[0x100]= + { +/* 0x00 - 0x03 */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0x04 - 0x07 */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0x08 - 0x0b */ DIS_DD_NOP, DIS_ADD_IX_BC, DIS_DD_NOP, DIS_DD_NOP, +/* 0x0c - 0x0f */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, + +/* 0x10 - 0x13 */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0x14 - 0x17 */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0x18 - 0x1b */ DIS_DD_NOP, DIS_ADD_IX_DE, DIS_DD_NOP, DIS_DD_NOP, +/* 0x1c - 0x1f */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, + +/* 0x20 - 0x23 */ DIS_DD_NOP, DIS_LD_IX_WORD, DIS_LD_ADDR_IX, DIS_INC_IX, +/* 0x24 - 0x27 */ DIS_INC_IXH, DIS_DEC_IXH, DIS_LD_IXH_BYTE, DIS_DD_NOP, +/* 0x28 - 0x2b */ DIS_DD_NOP, DIS_ADD_IX_IX, DIS_LD_IX_ADDR, DIS_DEC_IX, +/* 0x2c - 0x2f */ DIS_INC_IXL, DIS_DEC_IXL, DIS_LD_IXL_BYTE, DIS_DD_NOP, + +/* 0x30 - 0x33 */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0x34 - 0x37 */ DIS_INC_IIX, DIS_DEC_IIX, DIS_LD_IIX_BYTE, DIS_DD_NOP, +/* 0x38 - 0x3b */ DIS_DD_NOP, DIS_ADD_IX_SP, DIS_DD_NOP, DIS_DD_NOP, +/* 0x3c - 0x3f */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, + +/* 0x40 - 0x43 */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0x44 - 0x47 */ DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_DD_NOP, +/* 0x48 - 0x4b */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0x4c - 0x4f */ DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_DD_NOP, + +/* 0x50 - 0x53 */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0x54 - 0x57 */ DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_DD_NOP, +/* 0x58 - 0x5b */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0x5c - 0x5f */ DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_DD_NOP, + +/* 0x60 - 0x63 */ DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_XLD_R8_R8, +/* 0x64 - 0x67 */ DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_XLD_R8_R8, +/* 0x68 - 0x6b */ DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_XLD_R8_R8, +/* 0x6c - 0x6f */ DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_XLD_R8_R8, + +/* 0x70 - 0x73 */ DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_XLD_R8_R8, +/* 0x74 - 0x77 */ DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_DD_NOP, DIS_XLD_R8_R8, +/* 0x78 - 0x7b */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0x7c - 0x7f */ DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_XLD_R8_R8, DIS_DD_NOP, + +/* 0x80 - 0x83 */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0x84 - 0x87 */ DIS_XADD_R8, DIS_XADD_R8, DIS_XADD_R8, DIS_DD_NOP, +/* 0x88 - 0x8b */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0x8c - 0x8f */ DIS_XADC_R8, DIS_XADC_R8, DIS_XADC_R8, DIS_DD_NOP, + +/* 0x90 - 0x93 */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0x94 - 0x97 */ DIS_XSUB_R8, DIS_XSUB_R8, DIS_XSUB_R8, DIS_DD_NOP, +/* 0x98 - 0x9b */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0x9c - 0x9f */ DIS_XSBC_R8, DIS_XSBC_R8, DIS_XSBC_R8, DIS_DD_NOP, + +/* 0xa0 - 0xa3 */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0xa4 - 0xa7 */ DIS_XAND_R8, DIS_XAND_R8, DIS_XAND_R8, DIS_DD_NOP, +/* 0xa8 - 0xab */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0xac - 0xaf */ DIS_XXOR_R8, DIS_XXOR_R8, DIS_XXOR_R8, DIS_DD_NOP, + +/* 0xb0 - 0xb3 */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0xb4 - 0xb7 */ DIS_X_OR_R8, DIS_X_OR_R8, DIS_X_OR_R8, DIS_DD_NOP, +/* 0xb8 - 0xbb */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0xbc - 0xbf */ DIS_XCP_R8, DIS_XCP_R8, DIS_XCP_R8, DIS_DD_NOP, + +/* 0xc0 - 0xc3 */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0xc4 - 0xc7 */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0xc8 - 0xcb */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_CB_DECODE, +/* 0xcc - 0xcf */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, + +/* 0xd0 - 0xd3 */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0xd4 - 0xd7 */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0xd8 - 0xdb */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0xdc - 0xdf */ DIS_DD_NOP, DIS_DD_DD_DECODE, DIS_DD_NOP, DIS_DD_NOP, + +/* 0xe0 - 0xe3 */ DIS_DD_NOP, DIS_POP_IX, DIS_DD_NOP, DIS_EX_ISP_IX, +/* 0xe4 - 0xe7 */ DIS_DD_NOP, DIS_PUSH_IX, DIS_DD_NOP, DIS_DD_NOP, +/* 0xe8 - 0xeb */ DIS_DD_NOP, DIS_JP_IX, DIS_DD_NOP, DIS_DD_NOP, +/* 0xec - 0xef */ DIS_DD_NOP, DIS_DD_ED_DECODE, DIS_DD_NOP, DIS_DD_NOP, + +/* 0xf0 - 0xf3 */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0xf4 - 0xf7 */ DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, DIS_DD_NOP, +/* 0xf8 - 0xfb */ DIS_DD_NOP, DIS_LD_SP_IX, DIS_DD_NOP, DIS_DD_NOP, +/* 0xfc - 0xff */ DIS_DD_NOP, DIS_DD_FD_DECODE, DIS_DD_NOP, DIS_DD_NOP, + }; + + +/* DIS_DD DIS_CB opcodes +*/ +DIS_OP_CALLBACK dis_DD_CB_opcode[0x100]= + { +/* 0x00 - 0x03 */ DIS_RLC_IX, DIS_RLC_IX, DIS_RLC_IX, DIS_RLC_IX, +/* 0x04 - 0x07 */ DIS_RLC_IX, DIS_RLC_IX, DIS_RLC_IX, DIS_RLC_IX, +/* 0x08 - 0x0b */ DIS_RRC_IX, DIS_RRC_IX, DIS_RRC_IX, DIS_RRC_IX, +/* 0x0c - 0x0f */ DIS_RRC_IX, DIS_RRC_IX, DIS_RRC_IX, DIS_RRC_IX, + +/* 0x10 - 0x13 */ DIS_RL_IX, DIS_RL_IX, DIS_RL_IX, DIS_RL_IX, +/* 0x14 - 0x17 */ DIS_RL_IX, DIS_RL_IX, DIS_RL_IX, DIS_RL_IX, +/* 0x18 - 0x1b */ DIS_RR_IX, DIS_RR_IX, DIS_RR_IX, DIS_RR_IX, +/* 0x1c - 0x1f */ DIS_RR_IX, DIS_RR_IX, DIS_RR_IX, DIS_RR_IX, + +/* 0x20 - 0x23 */ DIS_SLA_IX, DIS_SLA_IX, DIS_SLA_IX, DIS_SLA_IX, +/* 0x24 - 0x27 */ DIS_SLA_IX, DIS_SLA_IX, DIS_SLA_IX, DIS_SLA_IX, +/* 0x28 - 0x2b */ DIS_SRA_IX, DIS_SRA_IX, DIS_SRA_IX, DIS_SRA_IX, +/* 0x2c - 0x2f */ DIS_SRA_IX, DIS_SRA_IX, DIS_SRA_IX, DIS_SRA_IX, + +/* 0x30 - 0x33 */ DIS_SLL_IX, DIS_SLL_IX, DIS_SLL_IX, DIS_SLL_IX, +/* 0x34 - 0x37 */ DIS_SLL_IX, DIS_SLL_IX, DIS_SLL_IX, DIS_SLL_IX, +/* 0x38 - 0x3b */ DIS_SRL_IX, DIS_SRL_IX, DIS_SRL_IX, DIS_SRL_IX, +/* 0x3c - 0x3f */ DIS_SRL_IX, DIS_SRL_IX, DIS_SRL_IX, DIS_SRL_IX, + +/* 0x40 - 0x43 */ DIS_BIT_IX,DIS_BIT_IX, DIS_BIT_IX, DIS_BIT_IX, +/* 0x44 - 0x47 */ DIS_BIT_IX,DIS_BIT_IX, DIS_BIT_IX, DIS_BIT_IX, +/* 0x48 - 0x4b */ DIS_BIT_IX,DIS_BIT_IX, DIS_BIT_IX, DIS_BIT_IX, +/* 0x4c - 0x4f */ DIS_BIT_IX,DIS_BIT_IX, DIS_BIT_IX, DIS_BIT_IX, + +/* 0x50 - 0x53 */ DIS_BIT_IX,DIS_BIT_IX, DIS_BIT_IX, DIS_BIT_IX, +/* 0x54 - 0x57 */ DIS_BIT_IX,DIS_BIT_IX, DIS_BIT_IX, DIS_BIT_IX, +/* 0x58 - 0x5b */ DIS_BIT_IX,DIS_BIT_IX, DIS_BIT_IX, DIS_BIT_IX, +/* 0x5c - 0x5f */ DIS_BIT_IX,DIS_BIT_IX, DIS_BIT_IX, DIS_BIT_IX, + +/* 0x60 - 0x63 */ DIS_BIT_IX,DIS_BIT_IX, DIS_BIT_IX, DIS_BIT_IX, +/* 0x64 - 0x67 */ DIS_BIT_IX,DIS_BIT_IX, DIS_BIT_IX, DIS_BIT_IX, +/* 0x68 - 0x6b */ DIS_BIT_IX,DIS_BIT_IX, DIS_BIT_IX, DIS_BIT_IX, +/* 0x6c - 0x6f */ DIS_BIT_IX,DIS_BIT_IX, DIS_BIT_IX, DIS_BIT_IX, + +/* 0x70 - 0x73 */ DIS_BIT_IX,DIS_BIT_IX, DIS_BIT_IX, DIS_BIT_IX, +/* 0x74 - 0x77 */ DIS_BIT_IX,DIS_BIT_IX, DIS_BIT_IX, DIS_BIT_IX, +/* 0x78 - 0x7b */ DIS_BIT_IX,DIS_BIT_IX, DIS_BIT_IX, DIS_BIT_IX, +/* 0x7c - 0x7f */ DIS_BIT_IX,DIS_BIT_IX, DIS_BIT_IX, DIS_BIT_IX, + +/* 0x80 - 0x83 */ DIS_RES_IX,DIS_RES_IX, DIS_RES_IX, DIS_RES_IX, +/* 0x84 - 0x87 */ DIS_RES_IX,DIS_RES_IX, DIS_RES_IX, DIS_RES_IX, +/* 0x88 - 0x8b */ DIS_RES_IX,DIS_RES_IX, DIS_RES_IX, DIS_RES_IX, +/* 0x8c - 0x8f */ DIS_RES_IX,DIS_RES_IX, DIS_RES_IX, DIS_RES_IX, + +/* 0x90 - 0x93 */ DIS_RES_IX,DIS_RES_IX, DIS_RES_IX, DIS_RES_IX, +/* 0x94 - 0x97 */ DIS_RES_IX,DIS_RES_IX, DIS_RES_IX, DIS_RES_IX, +/* 0x98 - 0x9b */ DIS_RES_IX,DIS_RES_IX, DIS_RES_IX, DIS_RES_IX, +/* 0x9c - 0x9f */ DIS_RES_IX,DIS_RES_IX, DIS_RES_IX, DIS_RES_IX, + +/* 0xa0 - 0xa3 */ DIS_RES_IX,DIS_RES_IX, DIS_RES_IX, DIS_RES_IX, +/* 0xa4 - 0xa7 */ DIS_RES_IX,DIS_RES_IX, DIS_RES_IX, DIS_RES_IX, +/* 0xa8 - 0xab */ DIS_RES_IX,DIS_RES_IX, DIS_RES_IX, DIS_RES_IX, +/* 0xac - 0xaf */ DIS_RES_IX,DIS_RES_IX, DIS_RES_IX, DIS_RES_IX, + +/* 0xb0 - 0xb3 */ DIS_RES_IX,DIS_RES_IX, DIS_RES_IX, DIS_RES_IX, +/* 0xb4 - 0xb7 */ DIS_RES_IX,DIS_RES_IX, DIS_RES_IX, DIS_RES_IX, +/* 0xb8 - 0xbb */ DIS_RES_IX,DIS_RES_IX, DIS_RES_IX, DIS_RES_IX, +/* 0xbc - 0xbf */ DIS_RES_IX,DIS_RES_IX, DIS_RES_IX, DIS_RES_IX, + +/* 0xc0 - 0xc3 */ DIS_SET_IX,DIS_SET_IX, DIS_SET_IX, DIS_SET_IX, +/* 0xc4 - 0xc7 */ DIS_SET_IX,DIS_SET_IX, DIS_SET_IX, DIS_SET_IX, +/* 0xc8 - 0xcb */ DIS_SET_IX,DIS_SET_IX, DIS_SET_IX, DIS_SET_IX, +/* 0xcc - 0xcf */ DIS_SET_IX,DIS_SET_IX, DIS_SET_IX, DIS_SET_IX, + +/* 0xd0 - 0xd3 */ DIS_SET_IX,DIS_SET_IX, DIS_SET_IX, DIS_SET_IX, +/* 0xd4 - 0xd7 */ DIS_SET_IX,DIS_SET_IX, DIS_SET_IX, DIS_SET_IX, +/* 0xd8 - 0xdb */ DIS_SET_IX,DIS_SET_IX, DIS_SET_IX, DIS_SET_IX, +/* 0xdc - 0xdf */ DIS_SET_IX,DIS_SET_IX, DIS_SET_IX, DIS_SET_IX, + +/* 0xe0 - 0xe3 */ DIS_SET_IX,DIS_SET_IX, DIS_SET_IX, DIS_SET_IX, +/* 0xe4 - 0xe7 */ DIS_SET_IX,DIS_SET_IX, DIS_SET_IX, DIS_SET_IX, +/* 0xe8 - 0xeb */ DIS_SET_IX,DIS_SET_IX, DIS_SET_IX, DIS_SET_IX, +/* 0xec - 0xef */ DIS_SET_IX,DIS_SET_IX, DIS_SET_IX, DIS_SET_IX, + +/* 0xf0 - 0xf3 */ DIS_SET_IX,DIS_SET_IX, DIS_SET_IX, DIS_SET_IX, +/* 0xf4 - 0xf7 */ DIS_SET_IX,DIS_SET_IX, DIS_SET_IX, DIS_SET_IX, +/* 0xf8 - 0xfb */ DIS_SET_IX,DIS_SET_IX, DIS_SET_IX, DIS_SET_IX, +/* 0xfc - 0xff */ DIS_SET_IX,DIS_SET_IX, DIS_SET_IX, DIS_SET_IX, + }; + +/* DIS_ED opcodes +*/ +DIS_OP_CALLBACK dis_ED_opcode[0x100]= + { +/* 0x00 - 0x03 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x04 - 0x07 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x08 - 0x0b */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x0c - 0x0f */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, + +/* 0x10 - 0x13 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x14 - 0x17 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x18 - 0x1b */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x1c - 0x1f */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, + +/* 0x20 - 0x23 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x24 - 0x27 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x28 - 0x2b */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x2c - 0x2f */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, + +/* 0x30 - 0x33 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x34 - 0x37 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x38 - 0x3b */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x3c - 0x3f */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, + +/* 0x40 - 0x43 */ DIS_IN_R8_C, DIS_OUT_C_R8, DIS_SBC_HL_R16, DIS_ED_LD_ADDR_R16, +/* 0x44 - 0x47 */ DIS_NEG, DIS_RETN, DIS_IM_0, DIS_LD_I_A, +/* 0x48 - 0x4b */ DIS_IN_R8_C, DIS_OUT_C_R8, DIS_ADC_HL_R16, DIS_ED_LD_R16_ADDR, +/* 0x4c - 0x4f */ DIS_NEG, DIS_RETI, DIS_IM_0, DIS_LD_R_A, + +/* 0x50 - 0x53 */ DIS_IN_R8_C, DIS_OUT_C_R8, DIS_SBC_HL_R16, DIS_ED_LD_ADDR_R16, +/* 0x54 - 0x57 */ DIS_NEG, DIS_RETN, DIS_IM_1, DIS_LD_A_I, +/* 0x58 - 0x5b */ DIS_IN_R8_C, DIS_OUT_C_R8, DIS_ADC_HL_R16, DIS_ED_LD_R16_ADDR, +/* 0x5c - 0x5f */ DIS_NEG, DIS_RETI, DIS_IM_2, DIS_LD_A_R, + +/* 0x60 - 0x63 */ DIS_IN_R8_C, DIS_OUT_C_R8, DIS_SBC_HL_R16, DIS_ED_LD_ADDR_R16, +/* 0x64 - 0x67 */ DIS_NEG, DIS_RETN, DIS_IM_0, DIS_RRD, +/* 0x68 - 0x6b */ DIS_IN_R8_C, DIS_OUT_C_R8, DIS_ADC_HL_R16, DIS_ED_LD_R16_ADDR, +/* 0x6c - 0x6f */ DIS_NEG, DIS_RETI, DIS_IM_0, DIS_RLD, + +/* 0x70 - 0x73 */ DIS_IN_R8_C, DIS_OUT_C_R8, DIS_SBC_HL_R16, DIS_ED_LD_ADDR_R16, +/* 0x74 - 0x77 */ DIS_NEG, DIS_RETN, DIS_IM_1, DIS_ED_NOP, +/* 0x78 - 0x7b */ DIS_IN_R8_C, DIS_OUT_C_R8, DIS_ADC_HL_R16, DIS_ED_LD_R16_ADDR, +/* 0x7c - 0x7f */ DIS_NEG, DIS_RETI, DIS_IM_2, DIS_ED_NOP, + +/* 0x80 - 0x83 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x84 - 0x87 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x88 - 0x8b */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x8c - 0x8f */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, + +/* 0x90 - 0x93 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x94 - 0x97 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x98 - 0x9b */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0x9c - 0x9f */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, + +/* 0xa0 - 0xa3 */ DIS_LDI, DIS_CPI, DIS_INI, DIS_OUTI, +/* 0xa4 - 0xa7 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0xa8 - 0xab */ DIS_LDD, DIS_CPD, DIS_IND, DIS_OUTD, +/* 0xac - 0xaf */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, + +/* 0xb0 - 0xb3 */ DIS_LDIR, DIS_CPIR, DIS_INIR, DIS_OTIR, +/* 0xb4 - 0xb7 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0xb8 - 0xbb */ DIS_LDDR, DIS_CPDR, DIS_INDR, DIS_OTDR, +/* 0xbc - 0xbf */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, + +/* 0xc0 - 0xc3 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0xc4 - 0xc7 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0xc8 - 0xcb */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0xcc - 0xcf */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, + +/* 0xd0 - 0xd3 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0xd4 - 0xd7 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0xd8 - 0xdb */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0xdc - 0xdf */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, + +/* 0xe0 - 0xe3 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0xe4 - 0xe7 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0xe8 - 0xeb */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0xec - 0xef */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, + +/* 0xf0 - 0xf3 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0xf4 - 0xf7 */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0xf8 - 0xfb */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, +/* 0xfc - 0xff */ DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, DIS_ED_NOP, + }; + +/* DIS_FD opcodes +*/ +DIS_OP_CALLBACK dis_FD_opcode[0x100]= + { +/* 0x00 - 0x03 */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0x04 - 0x07 */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0x08 - 0x0b */ DIS_FD_NOP, DIS_ADD_IY_BC, DIS_FD_NOP, DIS_FD_NOP, +/* 0x0c - 0x0f */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, + +/* 0x10 - 0x13 */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0x14 - 0x17 */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0x18 - 0x1b */ DIS_FD_NOP, DIS_ADD_IY_DE, DIS_FD_NOP, DIS_FD_NOP, +/* 0x1c - 0x1f */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, + +/* 0x20 - 0x23 */ DIS_FD_NOP, DIS_LD_IY_WORD, DIS_LD_ADDR_IY, DIS_INC_IY, +/* 0x24 - 0x27 */ DIS_INC_IYH, DIS_DEC_IYH, DIS_LD_IYH_BYTE, DIS_FD_NOP, +/* 0x28 - 0x2b */ DIS_FD_NOP, DIS_ADD_IY_IY, DIS_LD_IY_ADDR, DIS_DEC_IY, +/* 0x2c - 0x2f */ DIS_INC_IYL, DIS_DEC_IYL, DIS_LD_IYL_BYTE, DIS_FD_NOP, + +/* 0x30 - 0x33 */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0x34 - 0x37 */ DIS_INC_IIY, DIS_DEC_IIY, DIS_LD_IIY_BYTE, DIS_FD_NOP, +/* 0x38 - 0x3b */ DIS_FD_NOP, DIS_ADD_IY_SP, DIS_FD_NOP, DIS_FD_NOP, +/* 0x3c - 0x3f */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, + +/* 0x40 - 0x43 */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0x44 - 0x47 */ DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_FD_NOP, +/* 0x48 - 0x4b */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0x4c - 0x4f */ DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_FD_NOP, + +/* 0x50 - 0x53 */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0x54 - 0x57 */ DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_FD_NOP, +/* 0x58 - 0x5b */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0x5c - 0x5f */ DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_FD_NOP, + +/* 0x60 - 0x63 */ DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_YLD_R8_R8, +/* 0x64 - 0x67 */ DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_YLD_R8_R8, +/* 0x68 - 0x6b */ DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_YLD_R8_R8, +/* 0x6c - 0x6f */ DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_YLD_R8_R8, + +/* 0x70 - 0x73 */ DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_YLD_R8_R8, +/* 0x74 - 0x77 */ DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_FD_NOP, DIS_YLD_R8_R8, +/* 0x78 - 0x7b */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0x7c - 0x7f */ DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_YLD_R8_R8, DIS_FD_NOP, + +/* 0x80 - 0x83 */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0x84 - 0x87 */ DIS_YADD_R8, DIS_YADD_R8, DIS_YADD_R8, DIS_FD_NOP, +/* 0x88 - 0x8b */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0x8c - 0x8f */ DIS_YADC_R8, DIS_YADC_R8, DIS_YADC_R8, DIS_FD_NOP, + +/* 0x90 - 0x93 */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0x94 - 0x97 */ DIS_YSUB_R8, DIS_YSUB_R8, DIS_YSUB_R8, DIS_FD_NOP, +/* 0x98 - 0x9b */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0x9c - 0x9f */ DIS_YSBC_R8, DIS_YSBC_R8, DIS_YSBC_R8, DIS_FD_NOP, + +/* 0xa0 - 0xa3 */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0xa4 - 0xa7 */ DIS_YAND_R8, DIS_YAND_R8, DIS_YAND_R8, DIS_FD_NOP, +/* 0xa8 - 0xab */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0xac - 0xaf */ DIS_YYOR_R8, DIS_YYOR_R8, DIS_YYOR_R8, DIS_FD_NOP, + +/* 0xb0 - 0xb3 */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0xb4 - 0xb7 */ DIS_Y_OR_R8, DIS_Y_OR_R8, DIS_Y_OR_R8, DIS_FD_NOP, +/* 0xb8 - 0xbb */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0xbc - 0xbf */ DIS_YCP_R8, DIS_YCP_R8, DIS_YCP_R8, DIS_FD_NOP, + +/* 0xc0 - 0xc3 */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0xc4 - 0xc7 */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0xc8 - 0xcb */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_CB_DECODE, +/* 0xcc - 0xcf */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, + +/* 0xd0 - 0xd3 */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0xd4 - 0xd7 */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0xd8 - 0xdb */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0xdc - 0xdf */ DIS_FD_NOP, DIS_FD_DD_DECODE, DIS_FD_NOP, DIS_FD_NOP, + +/* 0xe0 - 0xe3 */ DIS_FD_NOP, DIS_POP_IY, DIS_FD_NOP, DIS_EY_ISP_IY, +/* 0xe4 - 0xe7 */ DIS_FD_NOP, DIS_PUSH_IY, DIS_FD_NOP, DIS_FD_NOP, +/* 0xe8 - 0xeb */ DIS_FD_NOP, DIS_JP_IY, DIS_FD_NOP, DIS_FD_NOP, +/* 0xec - 0xef */ DIS_FD_NOP, DIS_FD_ED_DECODE, DIS_FD_NOP, DIS_FD_NOP, + +/* 0xf0 - 0xf3 */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0xf4 - 0xf7 */ DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, DIS_FD_NOP, +/* 0xf8 - 0xfb */ DIS_FD_NOP, DIS_LD_SP_IY, DIS_FD_NOP, DIS_FD_NOP, +/* 0xfc - 0xff */ DIS_FD_NOP, DIS_FD_FD_DECODE, DIS_FD_NOP, DIS_FD_NOP, + }; + + +/* DIS_FD DIS_CB opcodes +*/ +DIS_OP_CALLBACK dis_FD_CB_opcode[0x100]= + { +/* 0x00 - 0x03 */ DIS_RLC_IY, DIS_RLC_IY, DIS_RLC_IY, DIS_RLC_IY, +/* 0x04 - 0x07 */ DIS_RLC_IY, DIS_RLC_IY, DIS_RLC_IY, DIS_RLC_IY, +/* 0x08 - 0x0b */ DIS_RRC_IY, DIS_RRC_IY, DIS_RRC_IY, DIS_RRC_IY, +/* 0x0c - 0x0f */ DIS_RRC_IY, DIS_RRC_IY, DIS_RRC_IY, DIS_RRC_IY, + +/* 0x10 - 0x13 */ DIS_RL_IY, DIS_RL_IY, DIS_RL_IY, DIS_RL_IY, +/* 0x14 - 0x17 */ DIS_RL_IY, DIS_RL_IY, DIS_RL_IY, DIS_RL_IY, +/* 0x18 - 0x1b */ DIS_RR_IY, DIS_RR_IY, DIS_RR_IY, DIS_RR_IY, +/* 0x1c - 0x1f */ DIS_RR_IY, DIS_RR_IY, DIS_RR_IY, DIS_RR_IY, + +/* 0x20 - 0x23 */ DIS_SLA_IY, DIS_SLA_IY, DIS_SLA_IY, DIS_SLA_IY, +/* 0x24 - 0x27 */ DIS_SLA_IY, DIS_SLA_IY, DIS_SLA_IY, DIS_SLA_IY, +/* 0x28 - 0x2b */ DIS_SRA_IY, DIS_SRA_IY, DIS_SRA_IY, DIS_SRA_IY, +/* 0x2c - 0x2f */ DIS_SRA_IY, DIS_SRA_IY, DIS_SRA_IY, DIS_SRA_IY, + +/* 0x30 - 0x33 */ DIS_SLL_IY, DIS_SLL_IY, DIS_SLL_IY, DIS_SLL_IY, +/* 0x34 - 0x37 */ DIS_SLL_IY, DIS_SLL_IY, DIS_SLL_IY, DIS_SLL_IY, +/* 0x38 - 0x3b */ DIS_SRL_IY, DIS_SRL_IY, DIS_SRL_IY, DIS_SRL_IY, +/* 0x3c - 0x3f */ DIS_SRL_IY, DIS_SRL_IY, DIS_SRL_IY, DIS_SRL_IY, + +/* 0x40 - 0x43 */ DIS_BIT_IY,DIS_BIT_IY, DIS_BIT_IY, DIS_BIT_IY, +/* 0x44 - 0x47 */ DIS_BIT_IY,DIS_BIT_IY, DIS_BIT_IY, DIS_BIT_IY, +/* 0x48 - 0x4b */ DIS_BIT_IY,DIS_BIT_IY, DIS_BIT_IY, DIS_BIT_IY, +/* 0x4c - 0x4f */ DIS_BIT_IY,DIS_BIT_IY, DIS_BIT_IY, DIS_BIT_IY, + +/* 0x50 - 0x53 */ DIS_BIT_IY,DIS_BIT_IY, DIS_BIT_IY, DIS_BIT_IY, +/* 0x54 - 0x57 */ DIS_BIT_IY,DIS_BIT_IY, DIS_BIT_IY, DIS_BIT_IY, +/* 0x58 - 0x5b */ DIS_BIT_IY,DIS_BIT_IY, DIS_BIT_IY, DIS_BIT_IY, +/* 0x5c - 0x5f */ DIS_BIT_IY,DIS_BIT_IY, DIS_BIT_IY, DIS_BIT_IY, + +/* 0x60 - 0x63 */ DIS_BIT_IY,DIS_BIT_IY, DIS_BIT_IY, DIS_BIT_IY, +/* 0x64 - 0x67 */ DIS_BIT_IY,DIS_BIT_IY, DIS_BIT_IY, DIS_BIT_IY, +/* 0x68 - 0x6b */ DIS_BIT_IY,DIS_BIT_IY, DIS_BIT_IY, DIS_BIT_IY, +/* 0x6c - 0x6f */ DIS_BIT_IY,DIS_BIT_IY, DIS_BIT_IY, DIS_BIT_IY, + +/* 0x70 - 0x73 */ DIS_BIT_IY,DIS_BIT_IY, DIS_BIT_IY, DIS_BIT_IY, +/* 0x74 - 0x77 */ DIS_BIT_IY,DIS_BIT_IY, DIS_BIT_IY, DIS_BIT_IY, +/* 0x78 - 0x7b */ DIS_BIT_IY,DIS_BIT_IY, DIS_BIT_IY, DIS_BIT_IY, +/* 0x7c - 0x7f */ DIS_BIT_IY,DIS_BIT_IY, DIS_BIT_IY, DIS_BIT_IY, + +/* 0x80 - 0x83 */ DIS_RES_IY,DIS_RES_IY, DIS_RES_IY, DIS_RES_IY, +/* 0x84 - 0x87 */ DIS_RES_IY,DIS_RES_IY, DIS_RES_IY, DIS_RES_IY, +/* 0x88 - 0x8b */ DIS_RES_IY,DIS_RES_IY, DIS_RES_IY, DIS_RES_IY, +/* 0x8c - 0x8f */ DIS_RES_IY,DIS_RES_IY, DIS_RES_IY, DIS_RES_IY, + +/* 0x90 - 0x93 */ DIS_RES_IY,DIS_RES_IY, DIS_RES_IY, DIS_RES_IY, +/* 0x94 - 0x97 */ DIS_RES_IY,DIS_RES_IY, DIS_RES_IY, DIS_RES_IY, +/* 0x98 - 0x9b */ DIS_RES_IY,DIS_RES_IY, DIS_RES_IY, DIS_RES_IY, +/* 0x9c - 0x9f */ DIS_RES_IY,DIS_RES_IY, DIS_RES_IY, DIS_RES_IY, + +/* 0xa0 - 0xa3 */ DIS_RES_IY,DIS_RES_IY, DIS_RES_IY, DIS_RES_IY, +/* 0xa4 - 0xa7 */ DIS_RES_IY,DIS_RES_IY, DIS_RES_IY, DIS_RES_IY, +/* 0xa8 - 0xab */ DIS_RES_IY,DIS_RES_IY, DIS_RES_IY, DIS_RES_IY, +/* 0xac - 0xaf */ DIS_RES_IY,DIS_RES_IY, DIS_RES_IY, DIS_RES_IY, + +/* 0xb0 - 0xb3 */ DIS_RES_IY,DIS_RES_IY, DIS_RES_IY, DIS_RES_IY, +/* 0xb4 - 0xb7 */ DIS_RES_IY,DIS_RES_IY, DIS_RES_IY, DIS_RES_IY, +/* 0xb8 - 0xbb */ DIS_RES_IY,DIS_RES_IY, DIS_RES_IY, DIS_RES_IY, +/* 0xbc - 0xbf */ DIS_RES_IY,DIS_RES_IY, DIS_RES_IY, DIS_RES_IY, + +/* 0xc0 - 0xc3 */ DIS_SET_IY,DIS_SET_IY, DIS_SET_IY, DIS_SET_IY, +/* 0xc4 - 0xc7 */ DIS_SET_IY,DIS_SET_IY, DIS_SET_IY, DIS_SET_IY, +/* 0xc8 - 0xcb */ DIS_SET_IY,DIS_SET_IY, DIS_SET_IY, DIS_SET_IY, +/* 0xcc - 0xcf */ DIS_SET_IY,DIS_SET_IY, DIS_SET_IY, DIS_SET_IY, + +/* 0xd0 - 0xd3 */ DIS_SET_IY,DIS_SET_IY, DIS_SET_IY, DIS_SET_IY, +/* 0xd4 - 0xd7 */ DIS_SET_IY,DIS_SET_IY, DIS_SET_IY, DIS_SET_IY, +/* 0xd8 - 0xdb */ DIS_SET_IY,DIS_SET_IY, DIS_SET_IY, DIS_SET_IY, +/* 0xdc - 0xdf */ DIS_SET_IY,DIS_SET_IY, DIS_SET_IY, DIS_SET_IY, + +/* 0xe0 - 0xe3 */ DIS_SET_IY,DIS_SET_IY, DIS_SET_IY, DIS_SET_IY, +/* 0xe4 - 0xe7 */ DIS_SET_IY,DIS_SET_IY, DIS_SET_IY, DIS_SET_IY, +/* 0xe8 - 0xeb */ DIS_SET_IY,DIS_SET_IY, DIS_SET_IY, DIS_SET_IY, +/* 0xec - 0xef */ DIS_SET_IY,DIS_SET_IY, DIS_SET_IY, DIS_SET_IY, + +/* 0xf0 - 0xf3 */ DIS_SET_IY,DIS_SET_IY, DIS_SET_IY, DIS_SET_IY, +/* 0xf4 - 0xf7 */ DIS_SET_IY,DIS_SET_IY, DIS_SET_IY, DIS_SET_IY, +/* 0xf8 - 0xfb */ DIS_SET_IY,DIS_SET_IY, DIS_SET_IY, DIS_SET_IY, +/* 0xfc - 0xff */ DIS_SET_IY,DIS_SET_IY, DIS_SET_IY, DIS_SET_IY, + }; + +/* DIS_First/single byte opcodes +*/ +DIS_OP_CALLBACK dis_opcode_z80[0x100]= + { +/* 0x00 - 0x03 */ DIS_NOP, DIS_LD_R16_WORD, DIS_LD_R16_A, DIS_INC_R16, +/* 0x04 - 0x07 */ DIS_INC_R8, DIS_DEC_R8, DIS_LD_R8_BYTE, DIS_RLCA, +/* 0x08 - 0x0b */ DIS_EX_AF_AF, DIS_ADD_HL_R16, DIS_LD_A_R16, DIS_DEC_R16, +/* 0x0c - 0x0f */ DIS_INC_R8, DIS_DEC_R8, DIS_LD_R8_BYTE, DIS_RRCA, + +/* 0x10 - 0x13 */ DIS_DJNZ, DIS_LD_R16_WORD, DIS_LD_R16_A, DIS_INC_R16, +/* 0x14 - 0x17 */ DIS_INC_R8, DIS_DEC_R8, DIS_LD_R8_BYTE, DIS_RLA, +/* 0x18 - 0x1b */ DIS_JR, DIS_ADD_HL_R16, DIS_LD_A_R16, DIS_DEC_R16, +/* 0x1c - 0x1f */ DIS_INC_R8, DIS_DEC_R8, DIS_LD_R8_BYTE, DIS_RRA, + +/* 0x20 - 0x23 */ DIS_JR_CO, DIS_LD_R16_WORD, DIS_LD_ADDR_HL, DIS_INC_R16, +/* 0x24 - 0x27 */ DIS_INC_R8, DIS_DEC_R8, DIS_LD_R8_BYTE, DIS_DAA, +/* 0x28 - 0x2b */ DIS_JR_CO, DIS_ADD_HL_R16, DIS_LD_HL_ADDR, DIS_DEC_R16, +/* 0x2c - 0x2f */ DIS_INC_R8, DIS_DEC_R8, DIS_LD_R8_BYTE, DIS_CPL, + +/* 0x30 - 0x33 */ DIS_JR_CO, DIS_LD_R16_WORD, DIS_LD_ADDR_A, DIS_INC_R16, +/* 0x34 - 0x37 */ DIS_INC_R8, DIS_DEC_R8, DIS_LD_R8_BYTE, DIS_SCF, +/* 0x38 - 0x3b */ DIS_JR_CO, DIS_ADD_HL_R16, DIS_LD_A_ADDR, DIS_DEC_R16, +/* 0x3c - 0x3f */ DIS_INC_R8, DIS_DEC_R8, DIS_LD_R8_BYTE, DIS_CCF, + +/* 0x40 - 0x43 */ DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, +/* 0x44 - 0x47 */ DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, +/* 0x48 - 0x4b */ DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, +/* 0x4c - 0x4f */ DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, + +/* 0x50 - 0x53 */ DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, +/* 0x54 - 0x57 */ DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, +/* 0x58 - 0x5b */ DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, +/* 0x5c - 0x5f */ DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, + +/* 0x60 - 0x63 */ DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, +/* 0x64 - 0x67 */ DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, +/* 0x68 - 0x6b */ DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, +/* 0x6c - 0x6f */ DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, + +/* 0x70 - 0x73 */ DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, +/* 0x74 - 0x77 */ DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_HALT, DIS_LD_R8_R8, +/* 0x78 - 0x7b */ DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, +/* 0x7c - 0x7f */ DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, DIS_LD_R8_R8, + +/* 0x80 - 0x83 */ DIS_ADD_R8, DIS_ADD_R8, DIS_ADD_R8, DIS_ADD_R8, +/* 0x84 - 0x87 */ DIS_ADD_R8, DIS_ADD_R8, DIS_ADD_R8, DIS_ADD_R8, +/* 0x88 - 0x8b */ DIS_ADC_R8, DIS_ADC_R8, DIS_ADC_R8, DIS_ADC_R8, +/* 0x8c - 0x8f */ DIS_ADC_R8, DIS_ADC_R8, DIS_ADC_R8, DIS_ADC_R8, + +/* 0x90 - 0x93 */ DIS_SUB_R8, DIS_SUB_R8, DIS_SUB_R8, DIS_SUB_R8, +/* 0x94 - 0x97 */ DIS_SUB_R8, DIS_SUB_R8, DIS_SUB_R8, DIS_SUB_R8, +/* 0x98 - 0x9b */ DIS_SBC_R8, DIS_SBC_R8, DIS_SBC_R8, DIS_SBC_R8, +/* 0x9c - 0x9f */ DIS_SBC_R8, DIS_SBC_R8, DIS_SBC_R8, DIS_SBC_R8, + +/* 0xa0 - 0xa3 */ DIS_AND_R8, DIS_AND_R8, DIS_AND_R8, DIS_AND_R8, +/* 0xa4 - 0xa7 */ DIS_AND_R8, DIS_AND_R8, DIS_AND_R8, DIS_AND_R8, +/* 0xa8 - 0xab */ DIS_XOR_R8, DIS_XOR_R8, DIS_XOR_R8, DIS_XOR_R8, +/* 0xac - 0xaf */ DIS_XOR_R8, DIS_XOR_R8, DIS_XOR_R8, DIS_XOR_R8, + +/* 0xb0 - 0xb3 */ DIS_OR_R8, DIS_OR_R8, DIS_OR_R8, DIS_OR_R8, +/* 0xb4 - 0xb7 */ DIS_OR_R8, DIS_OR_R8, DIS_OR_R8, DIS_OR_R8, +/* 0xb8 - 0xbb */ DIS_CP_R8, DIS_CP_R8, DIS_CP_R8, DIS_CP_R8, +/* 0xbc - 0xbf */ DIS_CP_R8, DIS_CP_R8, DIS_CP_R8, DIS_CP_R8, + +/* 0xc0 - 0xc3 */ DIS_RET_CO, DIS_POP_R16, DIS_JP_CO, DIS_JP, +/* 0xc4 - 0xc7 */ DIS_CALL_CO, DIS_PUSH_R16, DIS_ADD_A_BYTE, DIS_RST, +/* 0xc8 - 0xcb */ DIS_RET_CO, DIS_RET, DIS_JP_CO, DIS_CB_DECODE, +/* 0xcc - 0xcf */ DIS_CALL_CO, DIS_CALL, DIS_ADC_A_BYTE, DIS_RST, + +/* 0xd0 - 0xd3 */ DIS_RET_CO, DIS_POP_R16, DIS_JP_CO, DIS_OUT_BYTE_A, +/* 0xd4 - 0xd7 */ DIS_CALL_CO, DIS_PUSH_R16, DIS_SUB_A_BYTE, DIS_RST, +/* 0xd8 - 0xdb */ DIS_RET_CO, DIS_EXX, DIS_JP_CO, DIS_IN_A_BYTE, +/* 0xdc - 0xdf */ DIS_CALL_CO, DIS_DD_DECODE, DIS_SBC_A_BYTE, DIS_RST, + +/* 0xe0 - 0xe3 */ DIS_RET_CO, DIS_POP_R16, DIS_JP_CO, DIS_EX_ISP_HL, +/* 0xe4 - 0xe7 */ DIS_CALL_CO, DIS_PUSH_R16, DIS_AND_A_BYTE, DIS_RST, +/* 0xe8 - 0xeb */ DIS_RET_CO, DIS_JP_HL, DIS_JP_CO, DIS_EX_DE_HL, +/* 0xec - 0xef */ DIS_CALL_CO, DIS_ED_DECODE, DIS_XOR_A_BYTE, DIS_RST, + +/* 0xf0 - 0xf3 */ DIS_RET_CO, DIS_POP_R16, DIS_JP_CO, DIS_DI, +/* 0xf4 - 0xf7 */ DIS_CALL_CO, DIS_PUSH_R16, DIS_OR_A_BYTE, DIS_RST, +/* 0xf8 - 0xfb */ DIS_RET_CO, DIS_LD_SP_HL, DIS_JP_CO, DIS_EI, +/* 0xfc - 0xff */ DIS_CALL_CO, DIS_FD_DECODE, DIS_CP_A_BYTE, DIS_RST, + }; + + +#endif + +/* END OF FILE */ diff --git a/src/z80_private.h b/src/z80_private.h new file mode 100644 index 0000000..f444632 --- /dev/null +++ b/src/z80_private.h @@ -0,0 +1,276 @@ +/* + + z80 - Z80 emulation + + Copyright (C) 2006 Ian Cowburn (ianc@noddybox.co.uk) + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + ------------------------------------------------------------------------- + + $Id: z80_private.h 13 2006-10-12 16:38:57Z ianc $ + + Private macros for Z80 + +*/ + +#ifndef Z80_PRIVATE_H +#define Z80_PRIVATE_H "$Id: z80_private.h 13 2006-10-12 16:38:57Z ianc $" + +#include "z80_config.h" + +#ifndef TRUE +#define TRUE 1 +#endif + +#ifndef FALSE +#define FALSE 0 +#endif + +#define MAX_PER_CALLBACK 10 + + +/* ---------------------------------------- TYPES +*/ + +struct Z80Private +{ + Z80Val cycle; + + int halt; + + Z80Byte shift; + + int raise; + Z80Byte devbyte; + int nmi; + +#ifndef ENABLE_ARRAY_MEMORY + Z80ReadMemory disread; + + Z80ReadMemory mread; + Z80WriteMemory mwrite; +#endif + + Z80ReadPort pread; + Z80WritePort pwrite; + + Z80Callback callback[eZ80_NO_CALLBACK][MAX_PER_CALLBACK]; + + int last_cb; +}; + +#define PRIV cpu->priv + + +/* ---------------------------------------- ARRAY MEMORY +*/ + +#ifdef ENABLE_ARRAY_MEMORY +extern Z80Byte Z80_MEMORY[]; +#endif + + +/* ---------------------------------------- MACROS +*/ + +/* NOTE: A lot of these macros assume you have a variable called 'cpu' + which is a pointer to Z80 +*/ + + +/* Invoke a callback class +*/ +#define CALLBACK(r,d) do \ + { \ + int f; \ + \ + for(f=0;f<MAX_PER_CALLBACK;f++) \ + if (PRIV->callback[r][f]) \ + PRIV->last_cb &= \ + PRIV->callback[r][f](cpu,d);\ + } while(0) + +/* Flag register +*/ +#define C_Z80 0x01 +#define N_Z80 0x02 +#define P_Z80 0x04 +#define V_Z80 P_Z80 +#define H_Z80 0x10 +#define Z_Z80 0x40 +#define S_Z80 0x80 + +#define B3_Z80 0x08 +#define B5_Z80 0x20 + + +#define SET(v,b) (v)|=b +#define CLR(v,b) (v)&=~(b) + +#define SETFLAG(f) SET(cpu->AF.b[LO],f) +#define CLRFLAG(f) CLR(cpu->AF.b[LO],f) + +#ifdef ENABLE_ARRAY_MEMORY + +#define PEEK(addr) Z80_MEMORY[addr] + +static inline Z80Word PEEKW(Z80Word addr) +{ + return (PEEK(addr) | (Z80Word)PEEK(addr+1)<<8); +} + +#define POKE(addr,val) do \ + { \ + Z80Word ba=addr; \ + if (ba>=RAMBOT && ba<=RAMTOP) \ + Z80_MEMORY[ba]=val; \ + } while(0) + +#define POKEW(addr,val) do \ + { \ + Z80Word wa=addr; \ + Z80Word wv=val; \ + POKE(wa,wv); \ + POKE(wa+1,wv>>8); \ + } while(0) + + +#define FETCH_BYTE (Z80_MEMORY[cpu->PC++]) +#define FETCH_WORD (cpu->PC+=2, \ + Z80_MEMORY[cpu->PC-2]| \ + ((Z80Word)Z80_MEMORY[cpu->PC-1]<<8)) + +#else + +#define PEEK(addr) (PRIV->mread(cpu,addr)) +#define PEEKW(addr) FPEEKW(cpu,addr) + +#define POKE(addr,val) PRIV->mwrite(cpu,addr,val) +#define POKEW(addr,val) FPOKEW(cpu,addr,val) + +#define FETCH_BYTE (PRIV->mread(cpu,cpu->PC++)) +#define FETCH_WORD (cpu->PC+=2,FPEEKW(cpu,cpu->PC-2)) + +#endif + + +#define IS_C (cpu->AF.b[LO]&C_Z80) +#define IS_N (cpu->AF.b[LO]&N_Z80) +#define IS_P (cpu->AF.b[LO]&P_Z80) +#define IS_H (cpu->AF.b[LO]&H_Z80) +#define IS_Z (cpu->AF.b[LO]&Z_Z80) +#define IS_S (cpu->AF.b[LO]&S_Z80) + +#define CARRY IS_C + +#define IS_IX_IY (PRIV->shift==0xdd || PRIV->shift==0xfd) +#define OFFSET(off) off=(IS_IX_IY ? (Z80Relative)FETCH_BYTE:0) + +#define TSTATE(n) PRIV->cycle+=n + +#define ADD_R(v) cpu->R=((cpu->R&0x80)|((cpu->R+(v))&0x7f)) +#define INC_R ADD_R(1) + +#ifdef ENABLE_ARRAY_MEMORY + +#define PUSH(REG) do \ + { \ + Z80Word pv=REG; \ + cpu->SP-=2; \ + POKE(cpu->SP,pv); \ + POKE(cpu->SP+1,pv>>8); \ + } while(0) + +#else + +#define PUSH(REG) do \ + { \ + Z80Word pushv=REG; \ + cpu->SP-=2; \ + PRIV->mwrite(cpu,cpu->SP,pushv); \ + PRIV->mwrite(cpu,cpu->SP+1,pushv>>8);\ + } while(0) +#endif + +#define POP(REG) do \ + { \ + REG=PEEK(cpu->SP) | \ + (Z80Word)PEEK(cpu->SP+1)<<8; \ + cpu->SP+=2; \ + } while(0) + +#define SETHIDDEN(res) cpu->AF.b[LO]=(cpu->AF.b[LO]&~(B3_Z80|B5_Z80))|\ + ((res)&(B3_Z80|B5_Z80)) + +#define CALL do \ + { \ + PUSH(cpu->PC+2); \ + cpu->PC=PEEKW(cpu->PC); \ + } while(0) + +#define NOCALL cpu->PC+=2 +#define JP cpu->PC=PEEKW(cpu->PC) +#define NOJP cpu->PC+=2 +#define JR cpu->PC+=(Z80Relative)PEEK(cpu->PC)+1 +#define NOJR cpu->PC++ + +#define OUT(P,V) do \ + { \ + if (PRIV->pwrite) \ + PRIV->pwrite(cpu,P,V); \ + } while(0) + +#define IN(P) (PRIV->pread?PRIV->pread(cpu,P):0) + + + +/* ---------------------------------------- LABELS +*/ +extern Z80Label *z80_labels; + + +/* ---------------------------------------- GLOBAL GENERAL OPCODES/ROUTINES +*/ +void Z80_Decode(Z80 *cpu, Z80Byte opcode); +void Z80_InitialiseInternals(void); + + +/* ---------------------------------------- DISASSEMBLY +*/ +#ifdef ENABLE_DISASSEM +typedef void (*DIS_OP_CALLBACK)(Z80 *z80, Z80Byte op, Z80Word *pc); + +extern DIS_OP_CALLBACK dis_CB_opcode[]; +extern DIS_OP_CALLBACK dis_DD_opcode[]; +extern DIS_OP_CALLBACK dis_DD_CB_opcode[]; +extern DIS_OP_CALLBACK dis_ED_opcode[]; +extern DIS_OP_CALLBACK dis_FD_opcode[]; +extern DIS_OP_CALLBACK dis_FD_CB_opcode[]; +extern DIS_OP_CALLBACK dis_opcode_z80[]; + +const char *Z80_Dis_Printf(const char *format, ...); + +Z80Byte Z80_Dis_FetchByte(Z80 *cpu, Z80Word *pc); +Z80Word Z80_Dis_FetchWord(Z80 *cpu, Z80Word *pc); + +void Z80_Dis_Set(const char *op, const char *arg); +const char *Z80_Dis_GetOp(void); +const char *Z80_Dis_GetArg(void); +#endif /* ENABLE_DISASSEM */ + +#endif /* Z80_PRIVATE_H */ + +/* END OF FILE */ |