80486DX2-66/86Box-fork
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Fixed the registers collision between SiS 496/497 and Cyrix registers, which fixes the 4SAW2 on Cyrix CPU's, and removed the block on those CPU's for that machine.

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OBattler
2024-02-06 21:01:11 +01:00
parent ecd90616f1
commit bf85d8088b
2 changed files with 2 additions and 2 deletions
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2
src/chipset/sis_85c496.c
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@@ -123,7 +123,7 @@ sis_85c497_isa_read(uint16_t port, void *priv)
const sis_85c496_t *dev = (sis_85c496_t *) priv;
uint8_t ret = 0xff;
if (port == 0x23)
if ((port == 0x23) && (dev->cur_reg < 0xc0))
ret = dev->regs[dev->cur_reg];
else if (port == 0x33)
ret = 0x3c /*random_generate()*/;

2
src/machine/machine_table.c
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@@ -7793,7 +7793,7 @@ const machine_t machines[] = {
.gpio_acpi_handler = NULL,
.cpu = {
.package = CPU_PKG_SOCKET3,
.block = CPU_BLOCK(CPU_i486SX, CPU_i486DX, CPU_Am486SX, CPU_Am486DX, CPU_Cx486S, CPU_Cx486DX, CPU_Cx5x86),
.block = CPU_BLOCK(CPU_i486SX, CPU_i486DX, CPU_Am486SX, CPU_Am486DX),
.min_bus = 0,
.max_bus = 0,
.min_voltage = 0,