如果(A)=5CH,(R0)=30H,(30H)=7AH,执行XCHD A, @R0;结果(A)=_______H,((R0))=_______H。
举一反三
- 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)=?
- 假设(30H)=60H,(60H)=55H,则执行下列指令后,(A)=H,MOV R0,30HMOV A,@R0
- 如A=57H,(R0)=30H,(30H)=0DAH执行指令XCHD A,@R0后,(A)=___________、(R0)=_____________、(30H)=_______________
- 指令MOVR0,#20H执行前(R)=30H,(20H)=38H,执行后() A: (R0)=00H B: (R0)=20H C: (R0)=30H D: (R0)=38H