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Initial submission of the PCem-Experimental source code.

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OBattler
2016-06-26 00:34:39 +02:00
parent 09d7c4384f
commit fd2a5bc9f5
610 changed files with 184352 additions and 0 deletions
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70
src/um8881f.c Normal file
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#include "ibm.h"
#include "io.h"
#include "mem.h"
#include "pci.h"
#include "um8881f.h"
static uint8_t card_16[256];
static uint8_t card_18[256];
void um8881f_write(int func, int addr, uint8_t val, void *priv)
{
// pclog("um8881f_write : addr=%02x val=%02x %04x:%04x\n", addr, val, CS, pc);
if (addr == 0x54)
{
/* if ((card_16[0x54] ^ val) & 0x01)
{
if (val & 1)
mem_bios_set_state(0xe0000, 0x10000, 1, 1);
else
mem_bios_set_state(0xe0000, 0x10000, 0, 0);
}*/
flushmmucache_nopc();
}
if (addr == 0x55)
{
if ((card_16[0x55] ^ val) & 0xc0)
{
/* switch (val & 0xc0)
{
case 0x00: mem_bios_set_state(0xf0000, 0x10000, 0, 1); break;
case 0x40: mem_bios_set_state(0xf0000, 0x10000, 0, 0); break;
case 0x80: mem_bios_set_state(0xf0000, 0x10000, 1, 1); break;
case 0xc0: mem_bios_set_state(0xf0000, 0x10000, 1, 0); break;
}*/
shadowbios = val & 0x80;
shadowbios_write = !(val & 0x40);
flushmmucache_nopc();
}
}
if (addr >= 4)
card_16[addr] = val;
}
uint8_t um8881f_read(int func, int addr, void *priv)
{
return card_16[addr];
}
void um8886f_write(int func, int addr, uint8_t val, void *priv)
{
if (addr >= 4)
card_18[addr] = val;
}
uint8_t um8886f_read(int func, int addr, void *priv)
{
return card_18[addr];
}
void um8881f_init()
{
pci_add_specific(16, um8881f_read, um8881f_write, NULL);
pci_add_specific(18, um8886f_read, um8886f_write, NULL);
card_16[0] = card_18[0] = 0x60; /*UMC*/
card_16[1] = card_18[1] = 0x10;
card_16[2] = 0x81; card_16[3] = 0x88; /*UM8881 Host - PCI bridge*/
card_18[2] = 0x86; card_18[3] = 0x88; /*UM8886 PCI - ISA bridge*/
}