在执行下列指令后,A=(),R0=(),(60H)=()。MOV A,#45HMOV R0,#60HMOV @R0,AXCH A,R0
举一反三
- 假设(30H)=60H,(60H)=55H,则执行下列指令后,(A)=H,MOV R0,30HMOV A,@R0
- 指令 MOV R0,20H 执行前 (R0)=30H, (20H)=38H,执行后(R0)=?
- 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=
- 已知(60H)=8H,(R0)=60H,(A)=7H,问执行指令 后,(60H)=7H A: MOV R0,A B: MOVX R0,A C: DEC @R0 D: DEC R0
- 设R0=42H,(42H)=80H,A=48H,(50H)=08H,指出下列程序...OV @R0,50HMOV 50H,A