【填空题】若(R0)=10H,(10H)=1EH,(A)=29H,执行完“XCHD A,@R0”指令后,则(A)=()H,(10H)=()H
举一反三
- 根据下列程序段运行情况,将运行结果和指令分别补充完整。 (1)( );(A)=10H ( );(B)=10H ( );(A)=20H MOV 23H,A;(23H)=20H ( );(A)=21H MOV 24H,A;(24H)=21H INC A ;(A)=22H ( );(25H)= 22H (2)MOV A,#50H;(A)=( )H MOV R0,A;(R0)=( )H MOV @R0,#30H;(50H)=( )H ADD A,@R0;(A)=( )H MOVX @R0,A;(50H)=( )H
- 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)=______
- 如果(A)=5CH,(R0)=30H,(30H)=7AH,执行XCHD A, @R0;结果(A)=_______H,((R0))=_______H。
- 指令 MOV R0,20H 执行前 (R0)=30H, (20H)=38H,执行后(R0)=?
- 1已知(R0)=30H,求A,R4,30H,31H的内容MOVA,#10H;MOVR4,#36H;MOV@R0,#7AH;MOV31H,#01H2已知(A)=40H,(40H)=42HMOVR0,A;MOVA,@R0;MOV30H,A;求(30H)=?