public void _00EE_RET(ushort addr) { // Make sure it's a valid address and doesn't cause an infinite loop Assert.InRange(addr, 514, 4094); var stackModule = new StackModule(); stackModule.Push(addr); var instructions = new byte[] { 0x00, 0xEE }; var chip = CHIP8Factory.GetChip8(stack: stackModule); chip.LoadProgram(instructions); chip.Tick += (c, e) => { chip.Stop(); }; chip.Start(); var programCounter = GetProgramCounter(chip); Assert.Equal(addr, programCounter); }