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Improved the SCO Xenix fix, fixes OS/2 booting, fixes #4762.

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This commit is contained in:
OBattler
2024-08-29 01:26:32 +02:00
parent 447374bd65
commit f19a5447be
6 changed files with 37 additions and 37 deletions
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21
src/cpu/x86_ops_pmode.h
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@@ -431,21 +431,12 @@ op0F01_common(uint32_t fetchdat, int is32, int is286, int ea32)
if (cpu_mod != 3)
SEG_CHECK_WRITE(cpu_state.ea_seg);
if (is386 && is32 && (cpu_mod == 3)) {
if (cpu_flush_pending) {
if (is486 || isibm486)
seteaw(cr0 ^ 0x80000000);
else if (is386 && !cpu_16bitbus)
seteaw((cr0 ^ 0x80000000) | /* 0x7FFFFF00 */ 0x7FFFFFE0);
else
seteaw((cr0 ^ 0x80000000) | 0x7FFFFFF0);
} else {
if (is486 || isibm486)
seteaw(cr0);
else if (is386 && !cpu_16bitbus)
seteaw(cr0 | /* 0x7FFFFF00 */ 0x7FFFFFE0);
else
seteaw(cr0 | 0x7FFFFFF0);
}
if (is486 || isibm486)
seteaw(cr0);
else if (is386 && !cpu_16bitbus)
seteaw(cr0 | /* 0x7FFFFF00 */ 0x7FFFFFE0);
else
seteaw(cr0 | 0x7FFFFFF0);
} else {
if (is486 || isibm486)
seteaw(msw);