public void LeftShift()
{
var alu = new ALU();
alu.StageValue(0, 1);
alu.PerformAction(ALUCalculation.ShiftLeft, 1);
Assert.AreEqual(2, alu.ReadResult());
}
public void Not()
{
var alu = new ALU();
alu.StageValue(0, -1);
alu.PerformAction(ALUCalculation.Not);
Assert.AreEqual(0, alu.ReadResult());
}
public void Divide()
{
var alu = new ALU();
alu.StageValue(0, 4);
alu.StageValue(1, 2);
alu.PerformAction(ALUCalculation.Divide);
Assert.AreEqual(2, alu.ReadResult());
}
public void Multiply()
{
var alu = new ALU();
alu.StageValue(0, 2);
alu.StageValue(1, 3);
alu.PerformAction(ALUCalculation.Multiply);
Assert.AreEqual(6, alu.ReadResult());
}
public void Subtract()
{
var alu = new ALU();
alu.StageValue(0, 2);
alu.StageValue(1, 1);
alu.PerformAction(ALUCalculation.Subtract);
Assert.AreEqual(1, alu.ReadResult());
}
public void Add()
{
var alu = new ALU();
alu.StageValue(0, 1);
alu.StageValue(1, 1);
alu.PerformAction(ALUCalculation.Add);
Assert.AreEqual(2, alu.ReadResult());
}
public void RightShiftZeroFill()
{
var alu = new ALU();
unchecked
{
alu.StageValue(0, (long)0x80_00_00_00_00_00_00_00);
alu.PerformAction(ALUCalculation.ShiftRightZeroFill, 1);
}
Assert.AreEqual(0x40_00_00_00_00_00_00_00, alu.ReadResult());
}