public int Get(int registerSelect)
{
switch (registerSelect)
{
// RS1 = 0, RS0 = 0
case 0:
switch (CRA & 4)
{
// CRA-B4 = 1
case 4:
var eventArgs = new PeripheralEventArgs(Peripheral.PRA);
OnPeripheralRead.Invoke(this, eventArgs);
return(eventArgs.Value);
// CRA-B4 = 0
case 0:
return(DDRA);
}
break;
// RS1 = 0, RS0 = 1
case 1:
return(CRA);
// RS1 = 1, RS0 = 0
case 2:
switch (CRB & 4)
{
// CRB-B4 = 1
case 4:
var eventArgs = new PeripheralEventArgs(Peripheral.PRB);
OnPeripheralRead.Invoke(this, eventArgs);
return(eventArgs.Value);
// CRB-B4 = 0
case 0:
return(DDRB);
}
break;
// RS1 = 0, RS0 = 1
case 3:
return(CRB);
}
throw new Exception("Invalid state");
}
private void OnPeripheralRead(object sender, PeripheralEventArgs e)
{
e.Value = _debugConsoleAdapter.Write();
}
private void OnPeripheralWrite(object sender, PeripheralEventArgs e)
{
_debugConsoleAdapter.Read(e.Value & 1);
}