如(50H)=00H,执行DEC 50H指令后,50H单元的值为
举一反三
- R0=50H,(50H)=36H,执行MOV A, @R0后,A的内容是( )H。
- (2)已知(R1)=50H, (50H)=00H, CPU执行“DEC @R1”, 则 A: (R1)=4FH, (50H)=00H B: (R1)=50H, (50H)=0FFH C: (R1)=49H, (50H)=0FFH D: (R1)=4FH, (4FH)=0FFH
- 执行如下三条指令后,50H单元的内容是( )。 A: 50H B: 0FEH C: 60H D: 00H
- 已知(A)=7FH,(50H)=FFH,(60H)=00H,执行下列指令后,XCHA,50HXCHA,60HXCHA,50H(A)=________,(50H)=________,(60H)=________。
- 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