Retro/pcem
Watch
1
0
Fork
You've already forked pcem
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Opcode C6/1-7 and C7/1-7 treated as illegal on 286+ CPUs. Patch from Greatpsycho.

Browse source
This commit is contained in:
SarahW 2017-06-20 19:31:48 +01:00
commit 16b4894b44
1 changed files with 6 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

6
src/x86_ops_mov.h
View file

@ -181,6 +181,7 @@ static int opMOV_b_imm_a16(uint32_t fetchdat)
{ {
uint8_t temp; uint8_t temp;
fetch_ea_16(fetchdat); fetch_ea_16(fetchdat);
ILLEGAL_ON((rmdat & 0x38) != 0);
temp = readmemb(cs,cpu_state.pc); cpu_state.pc++; if (cpu_state.abrt) return 1; temp = readmemb(cs,cpu_state.pc); cpu_state.pc++; if (cpu_state.abrt) return 1;
CHECK_WRITE(cpu_state.ea_seg, cpu_state.eaaddr, cpu_state.eaaddr); CHECK_WRITE(cpu_state.ea_seg, cpu_state.eaaddr, cpu_state.eaaddr);
seteab(temp); seteab(temp);
@ -192,6 +193,7 @@ static int opMOV_b_imm_a32(uint32_t fetchdat)
{ {
uint8_t temp; uint8_t temp;
fetch_ea_32(fetchdat); fetch_ea_32(fetchdat);
ILLEGAL_ON((rmdat & 0x38) != 0);
temp = getbyte(); if (cpu_state.abrt) return 1; temp = getbyte(); if (cpu_state.abrt) return 1;
seteab(temp); seteab(temp);
CLOCK_CYCLES(timing_rr); CLOCK_CYCLES(timing_rr);
@ -203,6 +205,7 @@ static int opMOV_w_imm_a16(uint32_t fetchdat)
{ {
uint16_t temp; uint16_t temp;
fetch_ea_16(fetchdat); fetch_ea_16(fetchdat);
ILLEGAL_ON((rmdat & 0x38) != 0);
temp = getword(); if (cpu_state.abrt) return 1; temp = getword(); if (cpu_state.abrt) return 1;
seteaw(temp); seteaw(temp);
CLOCK_CYCLES(timing_rr); CLOCK_CYCLES(timing_rr);
@ -213,6 +216,7 @@ static int opMOV_w_imm_a32(uint32_t fetchdat)
{ {
uint16_t temp; uint16_t temp;
fetch_ea_32(fetchdat); fetch_ea_32(fetchdat);
ILLEGAL_ON((rmdat & 0x38) != 0);
temp = getword(); if (cpu_state.abrt) return 1; temp = getword(); if (cpu_state.abrt) return 1;
seteaw(temp); seteaw(temp);
CLOCK_CYCLES(timing_rr); CLOCK_CYCLES(timing_rr);
@ -223,6 +227,7 @@ static int opMOV_l_imm_a16(uint32_t fetchdat)
{ {
uint32_t temp; uint32_t temp;
fetch_ea_16(fetchdat); fetch_ea_16(fetchdat);
ILLEGAL_ON((rmdat & 0x38) != 0);
temp = getlong(); if (cpu_state.abrt) return 1; temp = getlong(); if (cpu_state.abrt) return 1;
seteal(temp); seteal(temp);
CLOCK_CYCLES(timing_rr); CLOCK_CYCLES(timing_rr);
@ -233,6 +238,7 @@ static int opMOV_l_imm_a32(uint32_t fetchdat)
{ {
uint32_t temp; uint32_t temp;
fetch_ea_32(fetchdat); fetch_ea_32(fetchdat);
ILLEGAL_ON((rmdat & 0x38) != 0);
temp = getlong(); if (cpu_state.abrt) return 1; temp = getlong(); if (cpu_state.abrt) return 1;
seteal(temp); seteal(temp);
CLOCK_CYCLES(timing_rr); CLOCK_CYCLES(timing_rr);