f6ef1f833c
Thoroughly clean up the code to vastly reduce the number of compiler warnings and found and fixed several bugs in the process; Applied all mainline PCem commits; Added SCSI hard disk emulation; Commented out all unfinished machines and graphics cards; Added the AOpen AP53 and ASUS P/I-P55T2 machines as well as another Tyan 440FX machine, all three with AMI WinBIOS (patch from TheCollector1995); Added the Diamond Stealth 3D 3000 (S3 ViRGE/VX) graphics card (patch from TheCollector1995); Added the PS/2 XT IDE (AccuLogic) HDD Controller (patch from TheCollector1995); Added Microsoft/Logitech Bus Mouse emulation (patch from waltje); Overhauled the makefiles (patch from waltje); Added the Adaptec AHA-1542CF SCSI controller (patch from waltje); Added preliminary (but still unfinished) Adaptec AHA-154x SCSI controller BIOS support (patch from waltje); Added an ISABugger debugging device (patch from waltje); Added sanity checks to the Direct3D code.
101 lines
2.1 KiB
C
101 lines
2.1 KiB
C
#include <stdlib.h>
|
|
#include "ibm.h"
|
|
#include "device.h"
|
|
#include "io.h"
|
|
#include "ps2_nvr.h"
|
|
|
|
typedef struct ps2_nvr_t
|
|
{
|
|
int addr;
|
|
uint8_t ram[8192];
|
|
} ps2_nvr_t;
|
|
|
|
static uint8_t ps2_nvr_read(uint16_t port, void *p)
|
|
{
|
|
ps2_nvr_t *nvr = (ps2_nvr_t *)p;
|
|
|
|
switch (port)
|
|
{
|
|
case 0x74:
|
|
return nvr->addr & 0xff;
|
|
case 0x75:
|
|
return nvr->addr >> 8;
|
|
case 0x76:
|
|
return nvr->ram[nvr->addr];
|
|
}
|
|
|
|
return 0xff;
|
|
}
|
|
|
|
static void ps2_nvr_write(uint16_t port, uint8_t val, void *p)
|
|
{
|
|
ps2_nvr_t *nvr = (ps2_nvr_t *)p;
|
|
|
|
switch (port)
|
|
{
|
|
case 0x74:
|
|
nvr->addr = (nvr->addr & 0x1f00) | val;
|
|
break;
|
|
case 0x75:
|
|
nvr->addr = (nvr->addr & 0xff) | ((val & 0x1f) << 8);
|
|
break;
|
|
case 0x76:
|
|
nvr->ram[nvr->addr] = val;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void *ps2_nvr_init()
|
|
{
|
|
ps2_nvr_t *nvr = (ps2_nvr_t *)malloc(sizeof(ps2_nvr_t));
|
|
FILE *f = NULL;
|
|
|
|
memset(nvr, 0, sizeof(ps2_nvr_t));
|
|
|
|
io_sethandler(0x0074, 0x0003, ps2_nvr_read, NULL, NULL, ps2_nvr_write, NULL, NULL, nvr);
|
|
|
|
switch (romset)
|
|
{
|
|
case ROM_IBMPS2_M80: f = romfopen("nvr/ibmps2_m80_sec.nvr", "rb"); break;
|
|
}
|
|
if (f)
|
|
{
|
|
fread(nvr->ram, 8192, 1, f);
|
|
fclose(f);
|
|
}
|
|
else
|
|
memset(nvr->ram, 0xFF, 8192);
|
|
|
|
return nvr;
|
|
}
|
|
|
|
static void ps2_nvr_close(void *p)
|
|
{
|
|
ps2_nvr_t *nvr = (ps2_nvr_t *)p;
|
|
FILE *f = NULL;
|
|
|
|
switch (romset)
|
|
{
|
|
case ROM_IBMPS2_M80: f = romfopen("nvr/ibmps2_m80_sec.nvr", "wb"); break;
|
|
}
|
|
if (f)
|
|
{
|
|
fwrite(nvr->ram, 8192, 1, f);
|
|
fclose(f);
|
|
}
|
|
|
|
free(nvr);
|
|
}
|
|
|
|
device_t ps2_nvr_device =
|
|
{
|
|
"PS/2 NVRRAM",
|
|
0,
|
|
ps2_nvr_init,
|
|
ps2_nvr_close,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL
|
|
};
|