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Implemented undocumented F6/1 and F7/1 TEST instructions.

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Implemented undocumented F1 LOCK and ICEBP instructions.
Implemented missing 286 LOADALL functionality.
SMSW now sets all 12 bits to 1 on 286.
Patch from Greatpsycho.
This commit is contained in:
SarahW 2017-04-28 18:47:38 +01:00
commit 4cb5ddd7f7
5 changed files with 61 additions and 12 deletions
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6
src/x86_ops_pmode.h
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@ -350,8 +350,9 @@ static int op0F01_common(uint32_t fetchdat, int is32, int is286, int ea32)
break;
case 0x20: /*SMSW*/
if (is486) seteaw(msw);
else seteaw(msw | 0xFF00);
if (is486) seteaw(msw);
else if (is386) seteaw(msw | 0xFF00);
else seteaw(msw | 0xFFF0);
CLOCK_CYCLES(2);
PREFETCH_RUN(2, 2, rmdat, 0,0,(cpu_mod == 3) ? 0:1,0, ea32);
break;
@ -364,6 +365,7 @@ static int op0F01_common(uint32_t fetchdat, int is32, int is286, int ea32)
}
tempw = geteaw(); if (cpu_state.abrt) return 1;
if (msw & 1) tempw |= 1;
if (!is386) tempw &= 0xF;
msw = tempw;
PREFETCH_RUN(2, 2, rmdat, 0,0,(cpu_mod == 3) ? 0:1,0, ea32);
break;