已知:(A)=78H,(R1)=78H,(B)=04H,CY=1,片内RAM(78H)=0DDH,(80H)=6CH,试分别写出下列指令执行后目标单元的结果和相应标志位的值。 (1)ADD A,@R1 _________________ (2)SUBB A,#77H _________________ (3)MUL AB _________________ (4)DIV AB _________________ (5)ANL 78H,#78H _________________ (6)ORL A,#0FH _________________ (7)XRL 80H,A _________________
A.门到门(Door to Door)
B.门到场(Door to CY)
C.场到场(CY to CY)
D.站到站(CFS to CFS)
A.00H
B.01H
C.02H
D.03H
A.0
B.1
C.-1
D.2