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static struct {
struct {
WREGS w[256];
BREGS b[256];
} reg;
struct {
WREGS w[256];
BREGS b[256];
} RM;
} Mod_RM;
#define RegWord(ModRM) nec_state->regs.w[Mod_RM.reg.w[ModRM]]
#define RegByte(ModRM) nec_state->regs.b[Mod_RM.reg.b[ModRM]]
#define GetRMWord(ModRM) \
((ModRM) >= 0xc0 ? nec_state->regs.w[Mod_RM.RM.w[ModRM]] : ( (*GetEA[ModRM])(nec_state), read_word( EA ) ))
#define PutbackRMWord(ModRM,val) \
{ \
if (ModRM >= 0xc0) nec_state->regs.w[Mod_RM.RM.w[ModRM]]=val; \
else write_word(EA,val); \
}
#define GetnextRMWord read_word((EA&0xf0000)|((EA+2)&0xffff))
#define PutRMWord(ModRM,val) \
{ \
if (ModRM >= 0xc0) \
nec_state->regs.w[Mod_RM.RM.w[ModRM]]=val; \
else { \
(*GetEA[ModRM])(nec_state); \
write_word( EA ,val); \
} \
}
#define PutImmRMWord(ModRM) \
{ \
WORD val; \
if (ModRM >= 0xc0) \
nec_state->regs.w[Mod_RM.RM.w[ModRM]] = FETCHWORD(); \
else { \
(*GetEA[ModRM])(nec_state); \
val = FETCHWORD(); \
write_word( EA , val); \
} \
}
#define GetRMByte(ModRM) \
((ModRM) >= 0xc0 ? nec_state->regs.b[Mod_RM.RM.b[ModRM]] : read_byte( (*GetEA[ModRM])(nec_state) ))
#define PutRMByte(ModRM,val) \
{ \
if (ModRM >= 0xc0) \
nec_state->regs.b[Mod_RM.RM.b[ModRM]]=val; \
else \
write_byte( (*GetEA[ModRM])(nec_state) ,val); \
}
#define PutImmRMByte(ModRM) \
{ \
if (ModRM >= 0xc0) \
nec_state->regs.b[Mod_RM.RM.b[ModRM]]=FETCH(); \
else { \
(*GetEA[ModRM])(nec_state); \
write_byte( EA , FETCH() ); \
} \
}
#define PutbackRMByte(ModRM,val) \
{ \
if (ModRM >= 0xc0) \
nec_state->regs.b[Mod_RM.RM.b[ModRM]]=val; \
else \
write_byte(EA,val); \
}
#define DEF_br8 \
UINT32 ModRM = FETCH(),src,dst; \
src = RegByte(ModRM); \
dst = GetRMByte(ModRM)
#define DEF_wr16 \
UINT32 ModRM = FETCH(),src,dst; \
src = RegWord(ModRM); \
dst = GetRMWord(ModRM)
#define DEF_r8b \
UINT32 ModRM = FETCH(),src,dst; \
dst = RegByte(ModRM); \
src = GetRMByte(ModRM)
#define DEF_r16w \
UINT32 ModRM = FETCH(),src,dst; \
dst = RegWord(ModRM); \
src = GetRMWord(ModRM)
#define DEF_ald8 \
UINT32 src = FETCH(); \
UINT32 dst = nec_state->regs.b[AL]
#define DEF_axd16 \
UINT32 src = FETCH(); \
UINT32 dst = nec_state->regs.w[AW]; \
src += (FETCH() << 8)
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