diff options
Diffstat (limited to 'z80_private.h')
| -rw-r--r-- | z80_private.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/z80_private.h b/z80_private.h index 4a19324..d031497 100644 --- a/z80_private.h +++ b/z80_private.h @@ -29,6 +29,8 @@ #ifndef Z80_PRIVATE_H #define Z80_PRIVATE_H "$Id$" +#include "z80_config.h" + #ifndef TRUE #define TRUE 1 #endif @@ -85,10 +87,12 @@ struct Z80 Z80Byte devbyte; int nmi; +#ifndef ENABLE_ARRAY_MEMORY Z80ReadMemory disread; Z80ReadMemory mread; Z80WriteMemory mwrite; +#endif Z80ReadPort pread; Z80WritePort pwrite; @@ -99,6 +103,14 @@ struct Z80 }; +/* ---------------------------------------- ARRAY MEMORY +*/ + +#ifdef ENABLE_ARRAY_MEMORY +extern Z80Byte Z80_MEMORY[]; +#endif + + /* ---------------------------------------- MACROS */ @@ -139,6 +151,38 @@ struct Z80 #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) (cpu->mread(cpu,addr)) #define PEEKW(addr) FPEEKW(cpu,addr) @@ -148,6 +192,9 @@ struct Z80 #define FETCH_BYTE (cpu->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) @@ -165,6 +212,18 @@ struct Z80 #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; \ @@ -172,6 +231,7 @@ struct Z80 cpu->mwrite(cpu,cpu->SP,pushv); \ cpu->mwrite(cpu,cpu->SP+1,pushv>>8);\ } while(0) +#endif #define POP(REG) do \ { \ |