public void SkipNextInstructionIfRegisterNotEqualsRegisterTest()
{
// Arrange
var sut = this.GetDefaultOpcodeProcessor();
var machineState = FixtureUtils.DefaultMachineState();
machineState.CurrentOpcode = 0x9238;
machineState.ProgramCounter = 0x300;
machineState.VRegisters[2] = 0x8010;
machineState.VRegisters[3] = 0x80FF;
// Act
sut.SkipNextInstructionIfRegisterNotEqualsRegister(machineState);
// Assert
Assert.Equal(machineState.ProgramCounter, 0x302);
}
public void ShiftRegisterLeftTest()
{
// Arrange
var sut = this.GetDefaultOpcodeProcessor();
var machineState = FixtureUtils.DefaultMachineState();
machineState.CurrentOpcode = 0x823E;
machineState.VRegisters[2] = 0x8010;
machineState.VRegisters[3] = 0x80FF;
// Act
sut.ShiftRegisterLeft(machineState);
// Assert
Assert.Equal(machineState.VRegisters[2], 0x80FF >> 1);
Assert.Equal(machineState.VRegisters[0xF], 0x1);
}
public void SubstractRegistersReverseTest()
{
// Arrange
var sut = this.GetDefaultOpcodeProcessor();
var machineState = FixtureUtils.DefaultMachineState();
machineState.CurrentOpcode = 0x8237;
machineState.VRegisters[2] = 0xE001;
machineState.VRegisters[3] = 0xFF01;
// Act
sut.SubstractRegistersReverse(machineState);
// Assert
Assert.Equal(machineState.VRegisters[2], 0xFF01 - 0xE001);
Assert.Equal(machineState.VRegisters[0xF], 0x1);
}
public void AddRegistersIntoRegisterTest()
{
// Arrange
var sut = this.GetDefaultOpcodeProcessor();
var machineState = FixtureUtils.DefaultMachineState();
machineState.CurrentOpcode = 0x8234;
machineState.VRegisters[2] = 0xFF;
machineState.VRegisters[3] = 0xFF;
// Act
sut.AddRegistersIntoRegister(machineState);
// Assert
Assert.Equal(machineState.VRegisters[2], 0xFF + 0xFF);
Assert.Equal(machineState.VRegisters[0xF], 0x1);
}
public void LoadFromValueInRegisterIntoAllRegistersTest()
{
// Arrange
var sut = this.GetDefaultOpcodeProcessor();
var machineState = FixtureUtils.DefaultMachineState();
machineState.CurrentOpcode = 0xF265;
machineState.IndexRegister = 0x204;
machineState.Memory[machineState.IndexRegister] = 0x10;
machineState.Memory[machineState.IndexRegister + 1] = 0x11;
machineState.Memory[machineState.IndexRegister + 2] = 0x12;
// Act
sut.LoadFromValueInRegisterIntoAllRegisters(machineState);
// Assert
Assert.Equal(machineState.Memory[machineState.IndexRegister], machineState.VRegisters[0]);
Assert.Equal(machineState.Memory[machineState.IndexRegister + 1], machineState.VRegisters[1]);
Assert.Equal(machineState.Memory[machineState.IndexRegister + 2], machineState.VRegisters[2]);
}
public void LoadAllRegistersFromValueInRegisterTest()
{
// Arrange
var sut = this.GetDefaultOpcodeProcessor();
var machineState = FixtureUtils.DefaultMachineState();
machineState.CurrentOpcode = 0xF455;
machineState.VRegisters[0x0] = 0x12;
machineState.VRegisters[0x1] = 0x13;
machineState.VRegisters[0x2] = 0x14;
machineState.VRegisters[0x3] = 0x15;
machineState.VRegisters[0x4] = 0x16;
// Act
sut.LoadAllRegistersFromValueInRegister(machineState);
// Assert
Assert.Equal(machineState.Memory[machineState.IndexRegister], 0x12);
Assert.Equal(machineState.Memory[machineState.IndexRegister + 1], 0x13);
Assert.Equal(machineState.Memory[machineState.IndexRegister + 2], 0x14);
Assert.Equal(machineState.Memory[machineState.IndexRegister + 3], 0x15);
Assert.Equal(machineState.Memory[machineState.IndexRegister + 4], 0x16);
}