若(A)=85H,(R7)=43H , (Cy)=1,则执行指令“ADDC A,R7”之后,进位位Cy、累加器A、寄存器R7的内容分别是
A: (A)=85H,(R7)=43H , (Cy)=1,
B: (A)=C8H,(R7)=FFH , (Cy)=1,
C: (A)=C9H,(R7)=43H , (Cy)=0
D: (A)=C9H,(R7)=43H , (Cy)=1
A: (A)=85H,(R7)=43H , (Cy)=1,
B: (A)=C8H,(R7)=FFH , (Cy)=1,
C: (A)=C9H,(R7)=43H , (Cy)=0
D: (A)=C9H,(R7)=43H , (Cy)=1
举一反三
- 若(A)=85H,(R7)=43H , (Cy)=1,则依次执行指令“ADD A,R7;DA A ”之后,进位位Cy、累加器A、寄存器R7的内容分别是 A: (A)=28H,(R7)=43H , (Cy)=1 B: (A)=85H,(R7)=43H , (Cy)=1 C: (A)=B8H,(R7)=43H , (Cy)=0 D: (A)=28H,(R7)=43H , (Cy)=0
- 如果(A)=34H,(R7)=0ABH,执行XCH A, R7;结果(A)=_________H,(R7)=________H
- 已知:A=85H,R0=30H,(30H)=11H,(31H)=FFH,Cy=1,试问CPU分别执行如下指令后累加器A和Cy中的值是多少? ①ADDC A,R0 ②ADDC A,31H ③ADDC A,@R0 ④ADDC A,#85H A: ①A=B6H,CY=1; ②A=85H,Cy=0;③A=97H,Cy=1 ; ④A=0BH,Cy=1 B: ①A=B6H,CY=0 ; ②A=85H,Cy=1;③A=97H,Cy=0 ; ④A=0BH,Cy=1
- 已知累加器(A)=87H,进位标志(CY)=0,执行RRCA指令后,(A)和(CY)的内容分别为() A: 0EH,1 B: 0FH,0 C: C3H,0 D: 43H,1
- 1 Complete the words. ► h a i r c u t haircut 1 f r _ _ _ e ____ 2 s _ _ s s _ r _ ____ 3 h _ _ r s t _ _ e ____ 4 h _ _ r d _ _ _ r ____ 5 p _ _ t _ n g ____ 6 t _ _ m ____ 7 c _ l _ _ r ____ 8 b l _ w – d r _ ____