已知(R0)=4BH,(A)=84H,片内RAM(4BH)=7FH,(40H)=20H,问执行序后,MOV A,@R0MOV @R0,40HMOV 40H,AMOV R0,#35H结果:(R0)= 、(A)= ,4BH= 、40H=
举一反三
- 已知(10H)=5AH,(2EH)=1FH, (40H)=2EH,(60H)=3DH<br/>执行下列程序段后:MOV 20H,60H MOV R1,20H MOV A,40H XCH A,R1 XCH A,60H XCH A,@R1 MOV R0,#10H XCHD A,@R0 (A)=______ ,(10H)=______ ,(2EH)=______ ,(40H)=______ ,(60H)=______
- 指令 MOV R0,20H 执行前 (R0)=30H, (20H)=38H,执行后(R0)=?
- 执行如下三条指令后,20H单元的内容是() M O V R 0,#20H M O V 40H,#0 F H M O V ﹫R 0,40H
- 假设(30H)=60H,(60H)=55H,则执行下列指令后,(A)=H,MOV R0,30HMOV A,@R0
- 已知相应单元的内容如下,请写出每条指令执行后的结果。 设(A)=40H;(R0)=50H;(40H)=30H;(50H)=10H。 MOV A,#20H ;(A)=______ MOV A,40H ;(A)=______ MOV A,R0 ;(A)=______ MOV A,@R0 ;(A)=______