判断下面哪条指令是错误的
A: IN AX,80H
B: MOV DX,2400H
C: OUT AX,35H
D: OUT 35H ,AX
A: IN AX,80H
B: MOV DX,2400H
C: OUT AX,35H
D: OUT 35H ,AX
举一反三
- 设(AX)=9ABCH,(DX)=8765H PUSH AX PUSH DX POP AX POP DX 上述4条指令执行后,(AX)=_(1)__H,(DX)=__(2)__H
- 若执行MOV AX, 0FFF5HMOV BL,0FDHIDIV BL指令后,AX=______ H。若执行MOV AX, 00FBHMOV BL,0DHDIV BL指令后,AX=______ H。
- 以下正确的输出指令是() A: OUT AX,DX B: OUT BX,AX C: OUT DX,AX D: OUT 1234H,AX
- 执行指令“PUSH AX”后,接着执行指令“POP DX”,其功能与下面哪条指令相同?() A: MOV AX,DX B: MOV DX,AX C: XCHG AX,DX D: XCHG DX,AX
- 写出下列程序段执行后AX的值为多少? MOV AX, 1234H; AX=(1)H MOV CL, 4 AND AL, 0FH; AX= (2) H ADD AL, 30H; AX= (3)H SHL AH, CL; AX= (4)H AND AH, 0F3H; AX= (5)H