static UInt8 joyIoRead(void* dummy, UInt16 ioPort)
{
switch (ioPort & 1) {
case 0:
return boardCaptureUInt8(0, (UInt8)(sg1000JoyIoRead(joyIo) & 0xff));
case 1:
return boardCaptureUInt8(1, (UInt8)(sg1000JoyIoRead(joyIo) >> 8));
}
return 0xff;
}
static UInt8 readA(SviPPI* ppi)
{
#if 1
// dvik: reverted to 2.8 since wav support is not finished yet
return boardCaptureUInt8(16, sviJoyIoReadTrigger(ppi->joyIO)) |
(boardGetCassetteInserted() ? 0:0x40);
#else
UInt8 value;
UInt8 casdat = 0;
value = boardCaptureUInt8(16, sviJoyIoReadTrigger(ppi->joyIO));
value |= boardGetCassetteInserted() ? 0:0x40;
tapeRead(&casdat);
value |= (casdat) ? 0:0x80;
dacWrite(ppi->dac, DAC_CH_MONO, (casdat & 0x01) ? 0 : 255);
return value;
#endif
}
static UInt8 sviPsgReadHandler(void* arg, UInt16 address)
{
UInt8 value = 0xff;
switch (address) {
case 0:
value = boardCaptureUInt8(17, sviJoyIoRead(joyIO));
lastJoystickValue = value;
break;
case 1:
value = psgAYReg15;
break;
}
return value;
}
static UInt8 readB(SviPPI* ppi)
{
return boardCaptureUInt8(ppi->row, getKeyState(ppi->row));
}
