private void WritePort(ushort port, byte value)
{
port &= 0xFF;
if (port < 0x40) // general IO ports
{
switch (port & 0xFF)
{
case 0x01: Port01 = value; break;
case 0x02: Port02 = value; break;
case 0x03: p3_write = true; Port03 = value; break;
case 0x04: /*Port04 = value;*/ break; // receive port, not sure what writing does
case 0x05: Port05 = (byte)(value & 0xF8); break;
case 0x06: PSG.Set_Panning(value); break;
case 0x3E: Port3E = value; break;
case 0x3F: Port3F = value; break;
}
}
else if (port < 0x80) // PSG
{
PSG.WriteReg(value);
}
else if (port < 0xC0) // VDP
{
if ((port & 1) == 0)
{
Vdp.WriteVdpData(value);
}
else
{
Vdp.WriteVdpControl(value);
}
}
else if (port == 0xDE && PortDEEnabled)
{
PortDE = value;
}
else if (port == 0xF0 && HasYM2413)
{
YM2413.RegisterLatch = value;
}
else if (port == 0xF1 && HasYM2413)
{
YM2413.Write(value);
}
else if (port == 0xF2 && HasYM2413)
{
YM2413.DetectionValue = value;
}
}
private void WritePort(ushort port, byte value)
{
port &= 0xFF;
if (port < 0x40) // general IO ports
{
switch (port & 0xFF)
{
case 0x01: Port01 = value; break;
case 0x02: Port02 = value; break;
case 0x05: Port05 = value; break;
case 0x06: PSG.Set_Panning(value); break;
case 0x3E: Port3E = value; break;
case 0x3F: Port3F = value; break;
}
}
else if (port < 0x80) // PSG
{
PSG.WriteReg(value);
}
else if (port < 0xC0) // VDP
{
if ((port & 1) == 0)
{
Vdp.WriteVdpData(value);
}
else
{
Vdp.WriteVdpControl(value);
}
}
else if (port == 0xDE && PortDEEnabled)
{
PortDE = value;
}
else if (port == 0xF0 && HasYM2413)
{
YM2413.RegisterLatch = value;
}
else if (port == 0xF1 && HasYM2413)
{
YM2413.Write(value);
}
else if (port == 0xF2 && HasYM2413)
{
YM2413.DetectionValue = value;
}
}