static int DrvScan(int nAction, int *pnMin)
{
struct BurnArea ba;
if (pnMin != NULL) {
*pnMin = 0x029707;
}
if (nAction & ACB_MEMORY_RAM) {
memset(&ba, 0, sizeof(ba));
ba.Data = AllRam;
ba.nLen = RamEnd-AllRam;
ba.szName = "All Ram";
BurnAcb(&ba);
}
if (nAction & ACB_DRIVER_DATA) {
ZetScan(nAction);
MSM6295Scan(0, nAction);
}
if (nAction & ACB_WRITE) {
ZetOpen(0);
bankswitch(banks[0]);
vidram_bankswitch(banks[1]);
ZetClose();
oki_bankswitch(banks[2]);
DrvRecalc = 1;
}
return 0;
}
void __fastcall speedspn_main_write_port(unsigned short port, unsigned char data)
{
switch (port & 0xff)
{
case 0x01:
case 0x10: // ?
return;
case 0x07:
*display_enable = ~data & 1;
return;
case 0x12:
bankswitch(data);
return;
case 0x13:
*soundlatch = data;
ZetClose();
ZetOpen(1);
ZetSetIRQLine(0, ZET_IRQSTATUS_ACK);
ZetClose();
ZetOpen(0);
return;
case 0x17:
vidram_bankswitch(data);
return;
}
}
static INT32 DrvDoReset()
{
memset (AllRam, 0, RamEnd - AllRam);
ZetOpen(0);
ZetReset();
bankswitch(0);
vidram_bankswitch(0);
ZetClose();
ZetOpen(1);
ZetReset();
ZetClose();
oki_bankswitch(1);
MSM6295Reset(0);
return 0;
}
