public ProgrammableInterruptTimer8253(ProgrammableInterruptController8259 pic)
{
this.pic = pic;
timers = new Timer[TimerCount];
timers[Irq0Timer] = new Timer();
timers[DramRefreshTimer] = new Timer();
timers[PcSpeakerTimer] = new Timer();
}
public ProgrammablePeripheralInterface8255(ILogger <ProgrammablePeripheralInterface8255> logger,
EventToken eventToken,
MemoryController memoryController,
ProgrammableInterruptTimer8253 pit,
ProgrammableInterruptController8259 pic)
{
this.logger = logger;
this.pic = pic;
this.pit = pit;
// IBM PC BIOS fetches the LSB of the Equipment Word from Port 0x60.
// - Bits 5-4: 0=EGA, 1=CGA 40x25, 2=CGA 80x25, 3=MDA
// - Bits 3-2=(value + 4) << 12 is memory size (undocumented, but used during POST).
// We return the max (64K) although we have much more.
data[0] = SenseInfo;
Console.TreatControlCAsInput = true;
var shutdownCancellationToken = eventToken.ShutDown.Token;
Task = Task.Run(async() =>
{
byte[] scanCodes;
if (isWindows)
{
scanCodes = Enumerable.Range(0, 256).Select(x => (byte)MapVirtualKey(x, 0)).ToArray();
}
else
{
Dictionary <int, int> linuxScanCodes = ReadLinuxScanCodes();
scanCodes = Enumerable.Range(0, 256)
.Select(x => linuxScanCodes.TryGetValue(x, out var scanCode) ? (byte)scanCode : (byte)0).ToArray();
}
while (!shutdownCancellationToken.IsCancellationRequested)
{
await Task.Delay(50, shutdownCancellationToken).ConfigureAwait(false);
if (!Console.KeyAvailable)
{
continue;
}
var consoleKeyInfo = Console.ReadKey(true);
if (consoleKeyInfo.Modifiers == (ConsoleModifiers.Control | ConsoleModifiers.Alt))
{
if (consoleKeyInfo.Key == ConsoleKey.C)
{
eventToken.Halt.Cancel();
}
else if (consoleKeyInfo.Key == ConsoleKey.M)
{
await File.WriteAllBytesAsync(
Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "Memory.bin"),
memoryController.Memory, shutdownCancellationToken);
}
}
if (consoleKeyInfo.Modifiers.HasFlag(ConsoleModifiers.Shift))
{
PutKey(scanCodes[VK_LSHIFT]);
await Task.Delay(20, shutdownCancellationToken).ConfigureAwait(false);
}
PutKey(scanCodes[(byte)consoleKeyInfo.Key]);
if (consoleKeyInfo.Modifiers.HasFlag(ConsoleModifiers.Shift))
{
await Task.Delay(20, shutdownCancellationToken).ConfigureAwait(false);
PutKey((byte)(scanCodes[VK_LSHIFT] | 0x80));
}
}
});
}