public void TFREXG_Transfer_X_Y() { TestContext.WriteLine("TFREXG - transfer X -> Y"); cpu.regX = 0xFFFF; cpu.regY = 0x7F; cpu.TFREXG(0x12, false); Assert.That(cpu.regX, Is.EqualTo(0xFFFF)); Assert.That(cpu.regY, Is.EqualTo(0xFFFF)); }