public void TestInterruptsCanOverlap()
{
var interruptRegisters = new InterruptRegisters();
interruptRegisters.RequestInterrupt(Interrupt.VerticalBlank);
interruptRegisters.RequestInterrupt(Interrupt.LCDSTAT);
Assert.Equal(0b11100011, interruptRegisters.InterruptFlags);
interruptRegisters.RequestInterrupt(Interrupt.Timer);
interruptRegisters.RequestInterrupt(Interrupt.Serial);
Assert.Equal(0b11101111, interruptRegisters.InterruptFlags);
interruptRegisters.RequestInterrupt(Interrupt.Joypad);
Assert.Equal(0b11111111, interruptRegisters.InterruptFlags);
}
public void TestAllInterruptsCanBeEnabled(int interrupt, byte expectedValue)
{
var interruptRegisters = new InterruptRegisters();
interruptRegisters.RequestInterrupt((Interrupt)interrupt);
Assert.Equal(expectedValue, interruptRegisters.InterruptFlags);
}
public void TestInterruptResetWorks()
{
var interruptRegisters = new InterruptRegisters();
foreach (var interrupt in Enum.GetValues(typeof(Interrupt)).Cast <Interrupt>())
{
interruptRegisters.RequestInterrupt(interrupt);
Assert.Equal(interrupt.Mask() | 0b11100000, interruptRegisters.InterruptFlags);
interruptRegisters.ResetInterrupt(interrupt);
Assert.Equal(0b11100000, interruptRegisters.InterruptFlags);
}
}