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OPTi 499: ROMCS# enable bits in register 2Dh override 22h bit 5 ROMCS# disable, fixes Alaris Cobalt LPX VBIOS

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win2kgamer
2026-02-15 00:41:52 -06:00
parent b12782ace9
commit 9831ded525
1 changed files with 4 additions and 1 deletions
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5
src/chipset/opti499.c
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@@ -84,7 +84,10 @@ opti499_recalc(opti499_t *dev)
base = 0xd0000 + (i << 14);
if ((dev->regs[0x22] & ((base >= 0xe0000) ? 0x20 : 0x40)) && (dev->regs[0x23] & (1 << i))) {
shflags = MEM_READ_INTERNAL;
if (dev->regs[0x2d] & (1 << ((i >> 1) + 2)))
shflags = MEM_READ_EXTANY;
else
shflags = MEM_READ_INTERNAL;
shflags |= (dev->regs[0x22] & ((base >= 0xe0000) ? 0x08 : 0x10)) ? MEM_WRITE_DISABLED : MEM_WRITE_INTERNAL;
} else {
if (dev->regs[0x2d] & (1 << ((i >> 1) + 2)))