private void HandleIRQ(ref INTs.IRQContext aContext)
{
int T0Delay = (int)T0DelyNS;
PITTimer hndlr = null;
if (ActiveHandlers.Count > 0)
{
T0Countdown = 65535;
}
for (int i = ActiveHandlers.Count - 1; i >= 0; i--)
{
hndlr = ActiveHandlers[i];
hndlr.NSRemaining -= T0Delay;
if (hndlr.NSRemaining < 1)
{
if (hndlr.Recuring)
{
hndlr.NSRemaining = hndlr.NanosecondsTimeout;
}
else
{
hndlr.ID = -1;
ActiveHandlers.RemoveAt(i);
}
hndlr.HandleTrigger();
}
}
}
protected void HandleNetworkInterrupt(ref INTs.IRQContext aContext)
{
UInt32 cur_status = StatusRegister;
//Console.WriteLine("AMD PCNet IRQ raised!");
if ((cur_status & 0x100) != 0)
{
mInitDone = true;
}
if ((cur_status & 0x200) != 0)
{
if (mTransmitBuffer.Count > 0)
{
byte[] data = mTransmitBuffer.Peek();
if (SendBytes(ref data) == true)
{
mTransmitBuffer.Dequeue();
}
}
}
if ((cur_status & 0x400) != 0)
{
ReadRawData();
}
StatusRegister = cur_status;
Cosmos.Core.Global.PIC.EoiSlave();
}
private void HandleIRQ(ref INTs.IRQContext aContext)
{
uint Status = ReadRegister(0xC0);
if ((Status & 0x04) != 0)
{
//Turn link up
LinkUp();
}
if ((Status & 0x10) != 0)
{
//Good threshold
}
if ((Status & 0x80) != 0)
{
uint _RXCurr = RXCurr;
RXDesc *desc = (RXDesc *)(RXDescs + (RXCurr * 16));
while ((desc->status & 0x1) != 0)
{
byte[] data = new byte[desc->length];
byte * ptr = (byte *)desc->addr;
for (int i = 0; i < desc->length; i++)
{
data[i] = ptr[i];
}
DataReceived(data);
desc->status = 0;
RXCurr = (RXCurr + 1) % 32;
WriteRegister(0x2818, _RXCurr);
}
}
}
public ProcessControlBlock(int priority, string commandLine, string[] args)
{
ProcessID = ProcessManager.CurrentPid++;
Priority = priority;
Context = new INTs.IRQContext();
CommandLine = commandLine;
Args = args;
Status = ProcessStatus.Ready;
StatusCode = 0;
}
private void HandleIRQ(ref INTs.IRQContext aContext)
{
byte xScanCode = IO.Port60.Byte;
bool xReleased = (xScanCode & 0x80) == 0x80;
if (xReleased)
{
xScanCode = (byte)(xScanCode ^ 0x80);
}
HandleScancode(xScanCode, xReleased);
}
private void HandleIRQ(ref INTs.IRQContext aContext)
{
var xScanCode = IO.Data.Byte;
var xReleased = (xScanCode & 0x80) == 0x80;
if (xReleased)
{
xScanCode = (byte)(xScanCode ^ 0x80);
}
OnKeyPressed?.Invoke(xScanCode, xReleased);
}
private void HandleInterrupt(ref INTs.IRQContext aContext)
{
ushort sr = pTransferStatus.Word;
if ((sr & IRQ_LVBCI) > 0)
{
// Last Valid Buffer interrupt
pTransferStatus.Word = IRQ_LVBCI;
}
else if ((sr & IRQ_BCIS) > 0)
{
// Load a buffer ahead
int next = lastValidIdx + 1;
if (next >= BUFFER_COUNT)
{
next -= BUFFER_COUNT;
}
BufferProvider.RequestBuffer(transferBuffer);
fixed(byte *mainBufPtr = transferBuffer.RawData)
{
MemoryOperations.Copy(
dest: bufferDescriptorList[next].pointer,
src: mainBufPtr,
size: bufferSizeBytes
);
}
// Set the index to the current one
lastValidIdx++;
if (lastValidIdx == BUFFER_COUNT)
{
lastValidIdx = 0;
}
pLastValidEntry.Byte = lastValidIdx;
pTransferStatus.Word = IRQ_BCIS;
}
else if ((sr & IRQ_FIFO_ERROR) > 0)
{
pTransferStatus.Word = IRQ_FIFO_ERROR;
}
}
private void HandleInterrupt(ref INTs.IRQContext context)
{
try
{
byte status = commandPort.Byte;
if ((byte)(status & 20) == 0)
{
return;
}
buffer[offset] = dataPort.Byte;
offset = (byte)((offset + 1) % 3);
if (offset == 0)
{
for (byte i = 0; i < 3; i++)
{
if ((buffer[0] & (0x1 << i)) != (buttons & (0x1 << i)))
{
if ((byte)(buttons & (0x1 << i)) != 0)
{
MouseManager.MouseState = MouseState.None;
}
else
{
MouseManager.MouseState = MouseState.Left;
}
}
}
if (buffer[1] != 0 || buffer[2] != 0)
{
MouseManager.HandleMouse((sbyte)buffer[1], (sbyte)-buffer[2], (int)MouseManager.MouseState, 0);
}
buttons = buffer[0];
}
}
catch (sys.Exception ex)
{
}
}
public void HandleMouse(ref INTs.IRQContext context)
{
if (mMouseCycle == 0)
{
mMouseByte[0] = IO.Data.Byte;
//Bit 3 of byte 0 is 1, then we have a good package
if ((mMouseByte[0] & (1 << 3)) == (1 << 3))
{
mMouseCycle++;
}
}
else if (mMouseCycle == 1)
{
mMouseByte[1] = IO.Data.Byte;
mMouseCycle++;
}
else if (mMouseCycle == 2)
{
mMouseByte[2] = IO.Data.Byte;
if (HasScrollWheel)
{
mMouseCycle++;
}
}
// TODO: move conditions to the if statement when stack corruption detection
// works better for complex conditions
var xTest1 = (mMouseCycle == 2 && !HasScrollWheel);
var xTest2 = (mMouseCycle == 3 && HasScrollWheel);
if (xTest1 || xTest2)
{
int xDeltaX = 0;
int xDeltaY = 0;
int xScrollWheel = 0;
int xMouseState;
if ((mMouseByte[0] & (1 << 4)) == (1 << 4))
{
xDeltaX = (mMouseByte[1] | ~0xFF);
}
else
{
xDeltaX = mMouseByte[1];
}
if ((mMouseByte[0] & (1 << 5)) == 1 << 5)
{
xDeltaY = -(mMouseByte[2] | ~0xFF);
}
else
{
xDeltaY = -mMouseByte[2];
}
xMouseState = mMouseByte[0] & 0b0000_0111;
if (HasScrollWheel)
{
var xScrollWheelByte = mMouseByte[3] & 0x0F;
xScrollWheel = (xScrollWheelByte & 0b1000) == 0 ? xScrollWheelByte : xScrollWheelByte | ~0x0F;
if (mMouseID == 4)
{
var xAdditionalButtonsByte = mMouseByte[3] & 0b0011_0000;
xMouseState |= (xAdditionalButtonsByte >> 1);
}
}
mDebugger.SendInternal($"(PS/2 Mouse) IRQ 12: Mouse State: ({xDeltaX}, {xDeltaY}, {xMouseState})");
OnMouseChanged?.Invoke(xDeltaX, xDeltaY, xMouseState, xScrollWheel);
mMouseCycle = 0;
}
}
/// <summary>
/// This is the default mouse handling code.
/// </summary>
/// <param name="context"></param>
public void HandleMouse(ref INTs.IRQContext context)
{
switch (mouse_cycle)
{
case 0:
mouse_byte[0] = p60.Byte;
if ((mouse_byte[0] & 0x8) == 0x8)
{
mouse_cycle++;
}
break;
case 1:
mouse_byte[1] = p60.Byte;
mouse_cycle++;
break;
case 2:
mouse_byte[2] = p60.Byte;
mouse_cycle = 0;
if ((mouse_byte[0] & 0x10) == 0x10)
{
X -= mouse_byte[1] ^ 0xff;
}
else
{
X += mouse_byte[1];
}
if ((mouse_byte[0] & 0x20) == 0x20)
{
Y += mouse_byte[2] ^ 0xff;
}
else
{
Y -= mouse_byte[2];
}
if (X < 0)
{
X = 0;
}
else if (X > 319)
{
X = 319;
}
if (Y < 0)
{
Y = 0;
}
else if (Y > 199)
{
Y = 199;
}
Buttons = (MouseState)(mouse_byte[0] & 0x7);
break;
}
}
public static void HandleIRQ2(ref INTs.IRQContext aContext)
{
Console.WriteLine("IRQ2");
}
/// <summary>
/// Handles the ATAPI IRQ as specified in Init()
/// </summary>
/// <param name="aContext"></param>
private void HandleIRQ(ref INTs.IRQContext aContext)
{
Ata.AtaDebugger.Send("ATAPI IRQ");
}
public void HandleMouse(ref INTs.IRQContext context)
{
switch (mouse_cycle)
{
case 0:
mouse_byte[0] = Read();
//Bit 3 of byte 0 is 1, then we have a good package
if ((mouse_byte[0] & 0x8) == 0x8)
{
mouse_cycle++;
}
break;
case 1:
mouse_byte[1] = Read();
mouse_cycle++;
break;
case 2:
mouse_byte[2] = Read();
mouse_cycle = 0;
if ((mouse_byte[0] & 0x10) == 0x10)
{
X -= (mouse_byte[1] ^ 0xff);
}
else
{
X += mouse_byte[1];
}
if ((mouse_byte[0] & 0x20) == 0x20)
{
Y += (mouse_byte[2] ^ 0xff);
}
else
{
Y -= mouse_byte[2];
}
if (X < 0)
{
X = 0;
}
else if (X > ScreenWidth - 1)
{
X = (int)ScreenWidth - 1;
}
if (Y < 0)
{
Y = 0;
}
else if (Y > ScreenHeight - 1)
{
Y = (int)ScreenHeight - 1;
}
Buttons = (MouseState)(mouse_byte[0] & 0x7);
break;
}
}