Q: 已知片内RAM 44H单元内容为07H,试分析并指出以下程序运行后,R1的结果如何?MOV R0 , #44HMOV A , @R0MOV R1 , A A:(R1)= ______
举一反三
- 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)=()
- 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=
- 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:
- 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)=______