已知(A)= F0H，(R0)=30H，(30H)=AAH。执行完指令XCH A, @R0后，累加器A的内容将变为
A: AAH
B: F0H
C: 30H
D: FFH
A: AAH
B: F0H
C: 30H
D: FFH
举一反三
- 已知()=<br/>F0H,(R0)=30H,(30H)=AAH。执行完指令XCH<br/>A, @R0后,累加器A的内容将变为() A: AAH B: F0H C: 30H D: FFH
- ()=F0H,<br/>(R0)=30H, and (30H)=AAH. After execution of an instruction XCH A,<br/>@R0, accumulator will be,( ) A: AAH B: F0H C: 30H D: 78H
- ()=F0H,<br/>(R0)=30H, and (30H)=AAH. After execution of an instruction “XCH<br/>A, @R0”, the contents of A will be( ) A: AAH B: F0H C: 30H D: 78H
- 执行如下三条指令后,30H单元的内容是( ) A: 、0 B: H C: H D、F D: H E: O F: O G: O H: R1,#30H I: 40H,#0 J: @R1,40H <br/>A、40H B、30H
- 如果(A)=5CH，(R0)=30H，(30H)=7AH，执行XCHD A, @R0；结果(A)=_______H，((R0))=_______H。