Retro/pcem
Watch
1
0
Fork
You've already forked pcem
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Intel Turbo Reset Control register needs to reset keyboard controller on hard reset. Fixes infinite memory count on reset on Advanced/EV and Premiere/PCI.

Browse source
This commit is contained in:
SarahW 2017-01-29 20:49:04 +00:00
commit 96ae5e84e3
2 changed files with 6 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

6
src/i430fx.c
View file

@ -99,9 +99,6 @@ uint8_t i430fx_read(int func, int addr, void *priv)
return card_i430fx[addr]; return card_i430fx[addr];
} }
/*The Turbo-Reset Control Register isn't listed in the i430FX datasheet, however
the Advanced/EV BIOS seems to assume it exists. It aliases with one of the PCI
registers.*/
static uint8_t trc = 0; static uint8_t trc = 0;
void i430fx_trc_write(uint16_t port, uint8_t val, void *p) void i430fx_trc_write(uint16_t port, uint8_t val, void *p)
@ -109,7 +106,10 @@ void i430fx_trc_write(uint16_t port, uint8_t val, void *p)
if ((val & 4) && !(trc & 4)) if ((val & 4) && !(trc & 4))
{ {
if (val & 2) /*Hard reset*/ if (val & 2) /*Hard reset*/
{
i430fx_write(0, 0x59, 0xf, NULL); /*Should reset all PCI devices, but just set PAM0 to point to ROM for now*/ i430fx_write(0, 0x59, 0xf, NULL); /*Should reset all PCI devices, but just set PAM0 to point to ROM for now*/
keyboard_at_reset(); /*Reset keyboard controller to reset system flag*/
}
resetx86(); resetx86();
} }

3
src/i430lx.c
View file

@ -111,7 +111,10 @@ void i430lx_trc_write(uint16_t port, uint8_t val, void *p)
if ((val & 4) && !(trc & 4)) if ((val & 4) && !(trc & 4))
{ {
if (val & 2) /*Hard reset*/ if (val & 2) /*Hard reset*/
{
i430lx_write(0, 0x59, 0xf, NULL); /*Should reset all PCI devices, but just set PAM0 to point to ROM for now*/ i430lx_write(0, 0x59, 0xf, NULL); /*Should reset all PCI devices, but just set PAM0 to point to ROM for now*/
keyboard_at_reset(); /*Reset keyboard controller to reset system flag*/
}
resetx86(); resetx86();
} }