diff options
| author | Ian C <ianc@noddybox.co.uk> | 2023-04-23 08:24:31 +0800 |
|---|---|---|
| committer | Ian C <ianc@noddybox.co.uk> | 2023-04-23 08:24:31 +0800 |
| commit | 1d1e0acb5b4494f7c1b041e24e5de4f0614a150b (patch) | |
| tree | f43094ced9e4b3dae4e9912eef606a9c567c635e /include/z80_private.h | |
| parent | ef18a653053c30237a9aff27eea91d38bd308987 (diff) | |
Updated Z80 emulation
Diffstat (limited to 'include/z80_private.h')
| -rw-r--r-- | include/z80_private.h | 73 |
1 files changed, 57 insertions, 16 deletions
diff --git a/include/z80_private.h b/include/z80_private.h index 10cf97e..e3d721a 100644 --- a/include/z80_private.h +++ b/include/z80_private.h @@ -19,14 +19,14 @@ ------------------------------------------------------------------------- - $Id: z80_private.h 13 2006-10-12 16:38:57Z ianc $ + $Id$ Private macros for Z80 */ #ifndef Z80_PRIVATE_H -#define Z80_PRIVATE_H "$Id: z80_private.h 13 2006-10-12 16:38:57Z ianc $" +#define Z80_PRIVATE_H "$Id$" #include "z80_config.h" @@ -48,6 +48,8 @@ struct Z80Private { Z80Val cycle; + Z80Val timer[Z80_NO_TIMERS]; + int halt; Z80Byte shift; @@ -69,6 +71,8 @@ struct Z80Private Z80Callback callback[eZ80_NO_CALLBACK][MAX_PER_CALLBACK]; int last_cb; + + Z80Reg memptr; }; #define PRIV cpu->priv @@ -114,18 +118,21 @@ extern Z80Byte Z80_MEMORY[]; #define B3_Z80 0x08 #define B5_Z80 0x20 +#define HIDDEN_Z80 (B3_Z80|B5_Z80) #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) +#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] +/* This can't be a macro as the macro is used as PEEKW(FETCH_WORD) +*/ static inline Z80Word PEEKW(Z80Word addr) { return (PEEK(addr) | (Z80Word)PEEK(addr+1)<<8); @@ -154,6 +161,9 @@ static inline Z80Word PEEKW(Z80Word addr) #else +Z80Word FPEEKW(Z80 *cpu, Z80Word addr); +void FPOKEW(Z80 *cpu, Z80Word addr, Z80Word val); + #define PEEK(addr) (PRIV->mread(cpu,addr)) #define PEEKW(addr) FPEEKW(cpu,addr) @@ -166,19 +176,37 @@ static inline Z80Word PEEKW(Z80Word addr) #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 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 OFFSET(base,off) do \ + { \ + if (IS_IX_IY) \ + { \ + off=(Z80Relative)FETCH_BYTE; \ + PRIV->memptr.w=base+off; \ + } \ + else \ + { \ + off=0; \ + } \ + } while(0) + +#define TSTATE(n) do \ + { \ + PRIV->cycle+=n; \ + PRIV->timer[Z80_TIMER_1]+=n; \ + PRIV->timer[Z80_TIMER_2]+=n; \ + PRIV->timer[Z80_TIMER_3]+=n; \ + } while(0) #define ADD_R(v) cpu->R=((cpu->R&0x80)|((cpu->R+(v))&0x7f)) #define INC_R ADD_R(1) @@ -211,19 +239,32 @@ static inline Z80Word PEEKW(Z80Word addr) cpu->SP+=2; \ } while(0) -#define SETHIDDEN(res) cpu->AF.b[LO]=(cpu->AF.b[LO]&~(B3_Z80|B5_Z80))|\ +#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); \ + PRIV->memptr.w=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 JP do \ + { \ + cpu->PC=PEEKW(cpu->PC); \ + PRIV->memptr.w=cpu->PC; \ + } while(0) + +#define NOJP NOCALL + +#define JR do \ + { \ + cpu->PC+=(Z80Relative)PEEK(cpu->PC)+1; \ + PRIV->memptr.w=cpu->PC; \ + } while(0) + #define NOJR cpu->PC++ #define OUT(P,V) do \ |