public void TestSTA()
{
SignalBus signals = new SignalBus();
Operation op = new STA(null, signals, null);
signals.Reset();
op.Step0();
Assert.IsTrue(signals.MI);
Assert.IsTrue(signals.CO);
signals.Reset();
op.Step1();
Assert.IsTrue(signals.RO);
Assert.IsTrue(signals.II);
Assert.IsTrue(signals.CE);
signals.Reset();
op.Step2();
Assert.IsTrue(signals.IO);
Assert.IsTrue(signals.MI);
signals.Reset();
op.Step3();
Assert.IsTrue(signals.AO);
Assert.IsTrue(signals.RI);
}
public void TestSUB()
{
SignalBus signals = new SignalBus();
Operation op = new SUB(null, signals, null);
signals.Reset();
op.Step0();
Assert.IsTrue(signals.MI);
Assert.IsTrue(signals.CO);
signals.Reset();
op.Step1();
Assert.IsTrue(signals.RO);
Assert.IsTrue(signals.II);
Assert.IsTrue(signals.CE);
signals.Reset();
op.Step2();
Assert.IsTrue(signals.IO);
Assert.IsTrue(signals.MI);
signals.Reset();
op.Step3();
Assert.IsTrue(signals.RO);
Assert.IsTrue(signals.BI);
signals.Reset();
op.Step4();
Assert.IsTrue(signals.EO);
Assert.IsTrue(signals.AI);
Assert.IsTrue(signals.SU);
Assert.IsTrue(signals.FI);
}
public void TestJZZeroEnabled()
{
SignalBus signals = new SignalBus();
FlagBus flagBus = new FlagBus();
FlagsRegister flags = new FlagsRegister(null, signals, flagBus);
flags.Value = FlagsRegister.ZERO;
Operation op = new JZ(null, signals, flags);
signals.Reset();
op.Step0();
Assert.IsTrue(signals.MI);
Assert.IsTrue(signals.CO);
signals.Reset();
op.Step1();
Assert.IsTrue(signals.RO);
Assert.IsTrue(signals.II);
Assert.IsTrue(signals.CE);
signals.Reset();
op.Step2();
Assert.IsTrue(signals.IO);
Assert.IsTrue(signals.J);
}
public void TestJMP()
{
SignalBus signals = new SignalBus();
FlagsRegister flags = new FlagsRegister(null, signals, null);
flags.Value = FlagsRegister.CARRY;
Operation op = new JMP(null, signals, null);
signals.Reset();
op.Step0();
Assert.IsTrue(signals.MI);
Assert.IsTrue(signals.CO);
signals.Reset();
op.Step1();
Assert.IsTrue(signals.RO);
Assert.IsTrue(signals.II);
Assert.IsTrue(signals.CE);
signals.Reset();
op.Step2();
Assert.IsTrue(signals.IO);
Assert.IsTrue(signals.J);
}
public void TestJCCarryDisabled()
{
SignalBus signals = new SignalBus();
FlagsRegister flags = new FlagsRegister(null, signals, null);
flags.Value = 0;
Operation op = new JC(null, signals, flags);
signals.Reset();
op.Step0();
Assert.IsTrue(signals.MI);
Assert.IsTrue(signals.CO);
signals.Reset();
op.Step1();
Assert.IsTrue(signals.RO);
Assert.IsTrue(signals.II);
Assert.IsTrue(signals.CE);
signals.Reset();
op.Step2();
Assert.IsFalse(signals.IO);
Assert.IsFalse(signals.J);
}
