执行下列指令后: MOV 40H,#48 MOV R0,#40H MOV A,@R0A=( ).
举一反三
- 执行下列指令后:(A)=____[br][/br] MOV 40H, #30H[br][/br] MOV R0, #40H[br][/br] MOV A,@R0
- 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)=______
- 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:
- 若(R1)=30H,(A)=40H,(30H)=60H,(40H)=08H。 试分析执行下列程序段后上述各单元内容的变化。 MOV A,@R1 MOV @R1,40H MOV 40H,A MOV R1,#7FH (R1)=();(A)=();(30H)=();(40H)=()