可屏蔽中斷的過程應(yīng)該是()(1)中斷向量指針(2)中斷源(3)中斷號(4)中斷向量
A.(3)(4)(1)(2)B.(2)(3)(1)(4)C.(3)(1)(4)(2)D.(1)(3)(2)(4)
A.IN AL,60HB.MOV DX,303H OUT DX,ALC.MOV DX,303HMOV AL,[SI]OUT DX,ALD.IN AL,303H