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Fixed M65C02 optimization [Peter Trauner]

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This commit is contained in:
Nathan Woods 2007-12-25 17:56:12 +00:00
parent 3ff2882dda
commit 24edb7d555
2 changed files with 20 additions and 18 deletions
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22
src/emu/cpu/m6502/ops02.h
View File

@ -93,16 +93,18 @@
* extra cycle if page boundary is crossed
***************************************************************/
#define BRA(cond) \
tmp = RDOPARG(); \
if (cond) \
{ \
RDMEM(PCW); \
EAW = PCW + (signed char)tmp; \
if ( EAH != PCH ) { \
RDMEM( (PCH << 8 ) | EAL) ; \
} \
PCD = EAD; \
CHANGE_PC; \
{ \
INT8 tmp2 = RDOPARG(); \
if (cond) \
{ \
RDMEM(PCW); \
EAW = PCW + (signed char)tmp2; \
if ( EAH != PCH ) { \
RDMEM( (PCH << 8 ) | EAL) ; \
} \
PCD = EAD; \
CHANGE_PC; \
} \
}
/***************************************************************

16
src/emu/cpu/m6502/t6502.c
View File

@ -42,14 +42,14 @@ OP(a0) { int tmp; RD_IMM; LDY; } /* 2 LDY IMM */
OP(c0) { int tmp; RD_IMM; CPY; } /* 2 CPY IMM */
OP(e0) { int tmp; RD_IMM; CPX; } /* 2 CPX IMM */
OP(10) { int tmp; BPL; } /* 2-4 BPL REL */
OP(30) { int tmp; BMI; } /* 2-4 BMI REL */
OP(50) { int tmp; BVC; } /* 2-4 BVC REL */
OP(70) { int tmp; BVS; } /* 2-4 BVS REL */
OP(90) { int tmp; BCC; } /* 2-4 BCC REL */
OP(b0) { int tmp; BCS; } /* 2-4 BCS REL */
OP(d0) { int tmp; BNE; } /* 2-4 BNE REL */
OP(f0) { int tmp; BEQ; } /* 2-4 BEQ REL */
OP(10) { BPL; } /* 2-4 BPL REL */
OP(30) { BMI; } /* 2-4 BMI REL */
OP(50) { BVC; } /* 2-4 BVC REL */
OP(70) { BVS; } /* 2-4 BVS REL */
OP(90) { BCC; } /* 2-4 BCC REL */
OP(b0) { BCS; } /* 2-4 BCS REL */
OP(d0) { BNE; } /* 2-4 BNE REL */
OP(f0) { BEQ; } /* 2-4 BEQ REL */
OP(01) { int tmp; RD_IDX; ORA; } /* 6 ORA IDX */
OP(21) { int tmp; RD_IDX; AND; } /* 6 AND IDX */