Function testShift

cpu/cpu_test.go:846–865

(instruction uint16, inputRegisters [4]uint16, expectedOutputRegisters [4]uint16, shifts uint16, t *testing.T)

}

func testShift(instruction uint16, inputRegisters [4]uint16, expectedOutputRegisters [4]uint16, shifts uint16, t *testing.T) {
	c := SetUpCPU()

	var i uint16
	for i = 0; i < shifts; i++ {
		setMemoryLocation(c, i, instruction)
	}

	for i, r := range inputRegisters {
		setRegister(c, i, r)
	}

	c.SetIAR(0x0000)

	for i = 0; i < shifts; i++ {
		doFetchDecodeExecute(c)
	}

	checkRegisters(c, expectedOutputRegisters[0], expectedOutputRegisters[1], expectedOutputRegisters[2], expectedOutputRegisters[3], t)
}

func TestSubtract(t *testing.T) {
	ClearMem()