/// <summary>
/// Handles the arithmetic instruction.
/// </summary>
private bool HandleArithmeticInstruction()
{
try
{
Alu.Execute(registers[currentInstruction.ParameterOne.Register],
registers[currentInstruction.ParameterTwo.Register],
currentInstruction.Type);
registers['A'] = Alu.R;
}
catch
{
return(false);
}
return(true);
}
public void TestADD()
{
alu.X = "01000000".BinToByte();
alu.Y = "00000001".BinToByte();
alu.Execute(Alu.Cmd.ADD, true);
Assert.AreEqual("01000001".BinToByte(), alu.Res);
Assert.AreEqual(false, processor.S);
Assert.AreEqual(false, processor.O);
Assert.AreEqual(false, processor.Z);
alu.X = "10000001".BinToByte();
alu.Y = "01111111".BinToByte();
alu.Execute(Alu.Cmd.ADD, true);
Assert.AreEqual("00000000".BinToByte(), alu.Res);
Assert.AreEqual(false, processor.S);
Assert.AreEqual(false, processor.O);
Assert.AreEqual(true, processor.Z);
alu.X = "01111111".BinToByte();
alu.Y = "00000001".BinToByte();
alu.Execute(Alu.Cmd.ADD, true);
Assert.AreEqual("10000000".BinToByte(), alu.Res);
Assert.AreEqual(true, processor.S);
Assert.AreEqual(true, processor.O);
Assert.AreEqual(false, processor.Z);
alu.X = "10000000".BinToByte();
alu.Y = "11111111".BinToByte();
alu.Execute(Alu.Cmd.ADD, true);
Assert.AreEqual("01111111".BinToByte(), alu.Res);
Assert.AreEqual(false, processor.S);
Assert.AreEqual(true, processor.O);
Assert.AreEqual(false, processor.Z);
}