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SiS 5571 can now configure the ISA bus clock

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This commit is contained in:
Panagiotis
2021-03-31 13:52:25 +03:00
committed by GitHub
parent 88165ae918
commit e9c589e7bc
1 changed files with 15 additions and 0 deletions
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15
src/chipset/sis_5571.c
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@@ -394,6 +394,21 @@ pci_isa_bridge_write(int func, int addr, uint8_t val, void *priv)
break; break;
case 0x45: case 0x45:
dev->pci_conf_sb[0][addr] = val & 0xec;
switch ((val & 0xc0) >> 6)
{
case 0:
cpu_set_isa_speed(7.159);
break;
case 1:
cpu_set_isa_pci_div(4);
break;
case 2:
cpu_set_isa_pci_div(3);
break;
}
break;
case 0x46: case 0x46:
dev->pci_conf_sb[0][addr] = val & 0xec; dev->pci_conf_sb[0][addr] = val & 0xec;
break; break;