已知(A)=7FH,(50H)=FFH,(60H)=00H,执行下列指令后,XCHA,50HXCHA,60HXCHA,50H(A)=________,(50H)=________,(60H)=________。
举一反三
- 已知 (A) = 78H, (R5) = 60H,(60H)=50H,执行指令 MOV A,@R5后 (A)= __ A: 78H B: 60H C: 50H D: 80H
- R0=50H,(50H)=36H,执行MOV A, @R0后,A的内容是( )H。
- 执行如下三条指令后,50H单元的内容是()。MOVR1,#50HMOV60H,#0FEHMOV@R1,60H A: 50H B: 0FEH C: 60H D: 00H
- 执行如下三条指令后,50H单元的内容是( )。 A: 50H B: 0FEH C: 60H D: 00H
- 中国大学MOOC: 已知 (A) = 78H, (R5) = 60H,(60H)=50H,执行指令 MOV A,@R5后 (A)= __