/// <summary>
/// Sets the current tape mode according to the current PC register
/// and the MIC bit state
/// </summary>
public void SetTapeMode()
{
// --- We must use the Spectrum 48K ROM for this mode
if (_memoryDevice.GetSelectedRomIndex() != HostVm.RomConfiguration.Spectrum48RomIndex)
{
return;
}
switch (_currentMode)
{
case TapeOperationMode.Passive:
if (_cpu.Registers.PC == LoadBytesRoutineAddress)
{
EnterLoadMode();
}
else if (_cpu.Registers.PC == SaveBytesRoutineAddress)
{
EnterSaveMode();
}
return;
case TapeOperationMode.Save:
if (_cpu.Registers.PC == ERROR_ROM_ADDRESS ||
(int)(_cpu.Tacts - _lastMicBitActivityTact) > SAVE_STOP_SILENCE)
{
LeaveSaveMode();
}
return;
case TapeOperationMode.Load:
if ((_tapePlayer?.Eof ?? false) || _cpu.Registers.PC == ERROR_ROM_ADDRESS)
{
LeaveLoadMode();
LoadCompleted?.Invoke(this, EventArgs.Empty);
}
return;
}
}
