Question

单片机原理及应用已知(A)=7A,(R0)=30H,(30H)=A5H,(PSW)=80H,请写出下列各条指令执行后A中

Answer 1

(1)30H

(2)A5H

(3)A5H

(4)75H

(5)A7H

(6)AAH

(7)1FH

(8)AAH

(9)20H

(10)D5H

(11)4AH

(12)20H

什么叫假设Cy=0

PSW=80H好像就是Cy=1了吧

PSW的第7位就是Cy吧