public void SumRegisterOutputsSumOfAAndB()
{
DataBus bus = new DataBus();
SignalBus signals = new SignalBus();
FlagBus flagBus = new FlagBus();
Register a = new ARegister(bus, signals);
Register b = new BRegister(bus, signals);
Register sum = new SumRegister(a, b, bus, signals, flagBus);
a.Value = 200;
b.Value = 100;
signals.EO = true;
sum.WriteToBus();
Assert.AreEqual(44, bus.Value);
Assert.IsTrue(flagBus.Carry);
}
public void SumRegisterOutputsSubstractionOfAAndB()
{
DataBus bus = new DataBus();
SignalBus signals = new SignalBus();
FlagBus flagBus = new FlagBus();
Register a = new ARegister(bus, signals);
Register b = new BRegister(bus, signals);
Register sum = new SumRegister(a, b, bus, signals, flagBus);
a.Value = 166;
b.Value = 166;
signals.EO = true;
signals.SU = true;
sum.WriteToBus();
Assert.AreEqual(0, bus.Value);
Assert.IsTrue(flagBus.Zero);
}
