public static void DisableAllIRQs()
{
MasterIRQMask = (byte)0xFF;
IO.WriteByte(IO.Port.Master_PIC_DataPort, MasterIRQMask);
IO.Delay();
SlaveIRQMask = (byte)0xFF;
IO.WriteByte(IO.Port.Slave_PIC_DataPort, SlaveIRQMask);
IO.Delay();
}
public static void Setup()
{
byte mask1, mask2;
// save masks
mask1 = IO.ReadByte(IO.Port.Master_PIC_DataPort);
mask2 = IO.ReadByte(IO.Port.Slave_PIC_DataPort);
// Remap the IRQ
IO.WriteByte(IO.Port.Master_PIC_CommandPort, MasterICW1);
IO.Delay();
IO.WriteByte(IO.Port.Master_PIC_DataPort, MasterIRQBase);
IO.Delay();
IO.WriteByte(IO.Port.Master_PIC_DataPort, MasterICW3);
IO.Delay();
IO.WriteByte(IO.Port.Master_PIC_DataPort, MasterICW4);
IO.Delay();
IO.WriteByte(IO.Port.Slave_PIC_CommandPort, SlaveICW1);
IO.Delay();
IO.WriteByte(IO.Port.Slave_PIC_DataPort, SlaveIRQBase);
IO.Delay();
IO.WriteByte(IO.Port.Slave_PIC_DataPort, SlaveICW3);
IO.Delay();
IO.WriteByte(IO.Port.Slave_PIC_DataPort, SlaveICW4);
IO.Delay();
// restore saved masks.
IO.WriteByte(IO.Port.Master_PIC_DataPort, mask1);
IO.WriteByte(IO.Port.Slave_PIC_DataPort, mask2);
DisableAllIRQs();
}