diff options
| -rw-r--r-- | z80_decode.c | 146 |
1 files changed, 80 insertions, 66 deletions
diff --git a/z80_decode.c b/z80_decode.c index 901760c..0a9ba00 100644 --- a/z80_decode.c +++ b/z80_decode.c @@ -244,7 +244,7 @@ do { \ #define INC8(REG) \ do { \ (REG)++; \ - cpu->AF.b.lo=CARRY|SZtable[(REG)]; \ + cpu->AF.b.lo=CARRY|SZtable[(REG)]|((REG)&(B3_Z80|B5_Z80)); \ if ((REG)==0x80) cpu->AF.b.lo|=P_Z80; \ if (((REG)&0x0f)==0) cpu->AF.b.lo|=H_Z80; \ } while(0) @@ -253,7 +253,7 @@ do { \ #define DEC8(REG) \ do { \ (REG)--; \ - cpu->AF.b.lo=N_Z80|CARRY; \ + cpu->AF.b.lo=N_Z80|CARRY|((REG)&(B3_Z80|B5_Z80)); \ 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)]; \ @@ -440,12 +440,26 @@ do { \ #define BIT(REG,B) \ do { \ - cpu->AF.b.lo&=CARRY; \ + cpu->AF.b.lo&=C_Z80; \ if ((REG)&(1<<B)) \ { \ if (B==7) cpu->AF.b.lo|=S_Z80; \ - if (B==5) cpu->AF.b.lo|=B5_Z80; \ - if (B==3) cpu->AF.b.lo|=B3_Z80; \ + cpu->AF.b.lo|=(REG & (B3_Z80|B5_Z80)); \ + } \ + else \ + { \ + cpu->AF.b.lo|=Z_Z80; \ + cpu->AF.b.lo|=P_Z80; \ + } \ +} while(0) + +#define BIT_MEMPTR(REG,B) \ +do { \ + cpu->AF.b.lo&=C_Z80; \ + if ((REG)&(1<<B)) \ + { \ + if (B==7) cpu->AF.b.lo|=S_Z80; \ + cpu->AF.b.lo|=(PRIV->memptr.b.hi & (B3_Z80|B5_Z80)); \ } \ else \ { \ @@ -832,7 +846,7 @@ do { \ OP(cpu->AF.b.hi); \ break; -#define CB_BITMANIP_BLOCK(BASE,OP,BIT_NO) \ +#define CB_BITMANIP_BLOCK(BASE,OP,OP2,BIT_NO) \ case BASE: /* OP B */ \ TSTATE(8); \ OP(cpu->BC.b.hi,BIT_NO); \ @@ -863,9 +877,9 @@ do { \ OP(cpu->HL.b.lo,BIT_NO); \ break; \ \ - case BASE+6: /* OP (HL) */ \ + case BASE+6: /* OP2 (HL) */ \ TSTATE(12); \ - OP_ON_MEM_WITH_ARG(OP,cpu->HL.w,BIT_NO); \ + OP_ON_MEM_WITH_ARG(OP2,cpu->HL.w,BIT_NO); \ break; \ \ case BASE+7: /* OP A */ \ @@ -917,7 +931,7 @@ do { \ OP_ON_MEM_WITH_COPY(OP,addr,cpu->AF.b.hi); \ break; -#define SHIFTED_CB_BITMANIP_BLOCK(BASE,OP,BIT_NO) \ +#define SHIFTED_CB_BITMANIP_BLOCK(BASE,OP,OP2,BIT_NO) \ case BASE: /* OP B */ \ TSTATE(8); \ OP_ON_MEM_WITH_ARG_AND_COPY(OP,addr,BIT_NO,cpu->BC.b.hi); \ @@ -948,9 +962,9 @@ do { \ OP_ON_MEM_WITH_ARG_AND_COPY(OP,addr,BIT_NO,cpu->HL.b.lo); \ break; \ \ - case BASE+6: /* OP (HL) */ \ + case BASE+6: /* OP2 (HL) */ \ TSTATE(12); \ - OP_ON_MEM_WITH_ARG(OP,addr,BIT_NO); \ + OP_ON_MEM_WITH_ARG(OP2,addr,BIT_NO); \ break; \ \ case BASE+7: /* OP A */ \ @@ -1430,7 +1444,7 @@ static void DecodeED(Z80 *cpu, Z80Byte opcode) case 0x71: /* OUT (C) */ TSTATE(12); - if (PRIV->pwrite) PRIV->pwrite(cpu,cpu->BC.w,0); + if (PRIV->pwrite) PRIV->pwrite(cpu,cpu->BC.w,255); break; case 0x72: /* SBC HL,SP */ @@ -1705,32 +1719,32 @@ static void DecodeCB(Z80 *cpu, Z80Byte opcode) 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) + CB_BITMANIP_BLOCK(0x40,BIT,BIT_MEMPTR,0) + CB_BITMANIP_BLOCK(0x48,BIT,BIT_MEMPTR,1) + CB_BITMANIP_BLOCK(0x50,BIT,BIT_MEMPTR,2) + CB_BITMANIP_BLOCK(0x58,BIT,BIT_MEMPTR,3) + CB_BITMANIP_BLOCK(0x60,BIT,BIT_MEMPTR,4) + CB_BITMANIP_BLOCK(0x68,BIT,BIT_MEMPTR,5) + CB_BITMANIP_BLOCK(0x70,BIT,BIT_MEMPTR,6) + CB_BITMANIP_BLOCK(0x78,BIT,BIT_MEMPTR,7) + + CB_BITMANIP_BLOCK(0x80,BIT_RES,BIT_RES,0) + CB_BITMANIP_BLOCK(0x88,BIT_RES,BIT_RES,1) + CB_BITMANIP_BLOCK(0x90,BIT_RES,BIT_RES,2) + CB_BITMANIP_BLOCK(0x98,BIT_RES,BIT_RES,3) + CB_BITMANIP_BLOCK(0xa0,BIT_RES,BIT_RES,4) + CB_BITMANIP_BLOCK(0xa8,BIT_RES,BIT_RES,5) + CB_BITMANIP_BLOCK(0xb0,BIT_RES,BIT_RES,6) + CB_BITMANIP_BLOCK(0xb8,BIT_RES,BIT_RES,7) + + CB_BITMANIP_BLOCK(0xc0,BIT_SET,BIT_SET,0) + CB_BITMANIP_BLOCK(0xc8,BIT_SET,BIT_SET,1) + CB_BITMANIP_BLOCK(0xd0,BIT_SET,BIT_SET,2) + CB_BITMANIP_BLOCK(0xd8,BIT_SET,BIT_SET,3) + CB_BITMANIP_BLOCK(0xe0,BIT_SET,BIT_SET,4) + CB_BITMANIP_BLOCK(0xe8,BIT_SET,BIT_SET,5) + CB_BITMANIP_BLOCK(0xf0,BIT_SET,BIT_SET,6) + CB_BITMANIP_BLOCK(0xf8,BIT_SET,BIT_SET,7) } } @@ -1745,17 +1759,17 @@ static void ShiftedDecodeCB(Z80 *cpu, Z80Byte opcode, Z80Relative offset) { case 0xdd: addr=cpu->IX.w+offset; + PRIV->memptr.w=addr; break; case 0xfd: addr=cpu->IY.w+offset; + PRIV->memptr.w=addr; break; default: addr=cpu->HL.w; /* Play safe... */ break; } - PRIV->memptr.w=addr; - switch(opcode) { SHIFTED_CB_ALU_BLOCK(0x00,RLC) @@ -1767,32 +1781,32 @@ static void ShiftedDecodeCB(Z80 *cpu, Z80Byte opcode, Z80Relative offset) 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) + SHIFTED_CB_BITMANIP_BLOCK(0x40,BIT,BIT_MEMPTR,0) + SHIFTED_CB_BITMANIP_BLOCK(0x48,BIT,BIT_MEMPTR,1) + SHIFTED_CB_BITMANIP_BLOCK(0x50,BIT,BIT_MEMPTR,2) + SHIFTED_CB_BITMANIP_BLOCK(0x58,BIT,BIT_MEMPTR,3) + SHIFTED_CB_BITMANIP_BLOCK(0x60,BIT,BIT_MEMPTR,4) + SHIFTED_CB_BITMANIP_BLOCK(0x68,BIT,BIT_MEMPTR,5) + SHIFTED_CB_BITMANIP_BLOCK(0x70,BIT,BIT_MEMPTR,6) + SHIFTED_CB_BITMANIP_BLOCK(0x78,BIT,BIT_MEMPTR,7) + + SHIFTED_CB_BITMANIP_BLOCK(0x80,BIT_RES,BIT_RES,0) + SHIFTED_CB_BITMANIP_BLOCK(0x88,BIT_RES,BIT_RES,1) + SHIFTED_CB_BITMANIP_BLOCK(0x90,BIT_RES,BIT_RES,2) + SHIFTED_CB_BITMANIP_BLOCK(0x98,BIT_RES,BIT_RES,3) + SHIFTED_CB_BITMANIP_BLOCK(0xa0,BIT_RES,BIT_RES,4) + SHIFTED_CB_BITMANIP_BLOCK(0xa8,BIT_RES,BIT_RES,5) + SHIFTED_CB_BITMANIP_BLOCK(0xb0,BIT_RES,BIT_RES,6) + SHIFTED_CB_BITMANIP_BLOCK(0xb8,BIT_RES,BIT_RES,7) + + SHIFTED_CB_BITMANIP_BLOCK(0xc0,BIT_SET,BIT_SET,0) + SHIFTED_CB_BITMANIP_BLOCK(0xc8,BIT_SET,BIT_SET,1) + SHIFTED_CB_BITMANIP_BLOCK(0xd0,BIT_SET,BIT_SET,2) + SHIFTED_CB_BITMANIP_BLOCK(0xd8,BIT_SET,BIT_SET,3) + SHIFTED_CB_BITMANIP_BLOCK(0xe0,BIT_SET,BIT_SET,4) + SHIFTED_CB_BITMANIP_BLOCK(0xe8,BIT_SET,BIT_SET,5) + SHIFTED_CB_BITMANIP_BLOCK(0xf0,BIT_SET,BIT_SET,6) + SHIFTED_CB_BITMANIP_BLOCK(0xf8,BIT_SET,BIT_SET,7) } } |