已知:(40H)=11H,(41H)=22H,R0=40H和R1=41H,试问如下指令执行后累加器A, 40H,41H和42H单元中的内容是什么? MOV A, @R0 MOV @R1, A MOV 42H, @R1
A: A=22H,(40H)=41H,(41H)=11H,(42H)=11H
B: A=11H,(40H)=11H,(41H)=11H,(42H)=11H
A: A=22H,(40H)=41H,(41H)=11H,(42H)=11H
B: A=11H,(40H)=11H,(41H)=11H,(42H)=11H
举一反三
- 已知:(30H)=23H,(31H)=13H,(40H)=72H,(41H)=08H 执行: MOV A,30H ADD A,40H DA A MOV 30H,A MOV A,31H ADDC A,41H DA A MOV 31H,A 则结果为:(30H)=______H,(31H)=______H,(40H)=______H,(CY)=______。
- 执行如下三条指令后,30H单元的内容是( ) A: 、0 B: H C: H D、F D: H E: O F: O G: O H: R1,#30H I: 40H,#0 J: @R1,40H <br/>A、40H B、30H
- 执行如下三条指令后,30H单元的内容是( ) MOV R1,#30H MOV 40H,#0EH MOV @R1,40H
- 执行如下三条指令①MOV R1,#30H ② MOV 40H,#0EH③MOV @R1,40H后,30H单元的内容是:
- 执行下面三条指令后,30H单元的内容是40H。MOV R1,#30HMOV 40H,#0EHMOV R1,40H错误:______改正:______