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Diffstat (limited to 'arm9/include/z80.h')
| -rw-r--r-- | arm9/include/z80.h | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/arm9/include/z80.h b/arm9/include/z80.h deleted file mode 100644 index 000b950..0000000 --- a/arm9/include/z80.h +++ /dev/null @@ -1,250 +0,0 @@ -/* - - 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 - - ------------------------------------------------------------------------- - - $Id$ - -*/ - -#ifndef Z80_H -#define Z80_H "$Id$" - -/* 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); - -#endif - -/* END OF FILE */ |