void sunriseIdeReset(SunriseIde* ide)
{
ide->currentDevice = 0;
ide->softReset = 0;
harddiskIdeReset(ide->hdide[0]);
harddiskIdeReset(ide->hdide[1]);
}
static void writeIo(RomMapperGIde* rm, UInt16 ioPort, UInt8 value)
{
switch (ioPort & 0x0f)
{
case 0x04: // Reserved for expansion board
break;
case 0x05: // RTC 72421
rtc72421Write(ioPort >> 8, value);
break;
case 0x06: // GIDE digital output register
rm->intEnable = value & 0x01?1:0;
if (value & 0x02)
harddiskIdeReset(rm->hdide);
break;
case 0x07: // GIDE drive address register
break;
case 0x08: // IDE data register
harddiskIdeWrite(rm->hdide, value);
break;
case 0x09: // IDE write precomp register
harddiskIdeWriteRegister(rm->hdide, 1, value);
break;
case 0x0a: // IDE sector count register
harddiskIdeWriteRegister(rm->hdide, 2, value);
break;
case 0x0b: // IDE sector number register
harddiskIdeWriteRegister(rm->hdide, 3, value);
break;
case 0x0c: // IDE cylinder low register
harddiskIdeWriteRegister(rm->hdide, 4, value);
break;
case 0x0d: // IDE cylinder high register
harddiskIdeWriteRegister(rm->hdide, 5, value);
break;
case 0x0e: // IDE drive/head register
rm->drvSelect = value;
harddiskIdeWriteRegister(rm->hdide, 6, value);
break;
case 0x0f: // IDE command register
harddiskIdeWriteRegister(rm->hdide, 7, value);
break;
}
}
HarddiskIde* harddiskIdeCreate(int diskId)
{
HarddiskIde* hd = malloc(sizeof(HarddiskIde));
hd->diskId = diskId;
hd->transferRead = 0;
hd->transferWrite = 0;
harddiskIdeReset(hd);
return hd;
}
void sunriseIdeWriteRegister(SunriseIde* ide, UInt8 reg, UInt8 value)
{
if (ide->softReset) {
if ((reg == 14) && !(value & 0x04)) {
ide->softReset = 0;
}
return;
}
if (reg == 0) {
sunriseIdeWrite(ide, (value << 8) | value);
return;
}
if ((reg == 14) && (value & 0x04)) {
ide->softReset = 1;
harddiskIdeReset(ide->hdide[0]);
harddiskIdeReset(ide->hdide[1]);
return;
}
if (reg == 6) {
ide->currentDevice = (value >> 4) & 1;
}
static void reset(RomMapperGIde* rm)
{
harddiskIdeReset(rm->hdide);
}
static void reset(RomMapperRsIde* rm)
{
harddiskIdeReset(rm->hdide);
i8255Reset(rm->i8255);
}
