51?????????????????
???????A???????????
CLR A ;??A?е????0?????????????????MOV A??#00HЧ???????
CPL A ;??A?е????λ???
RL A ;??A?е?????????
RLC A ;??A?е???????λλ???????????
RR A ;??A?е?????????????
RRC A ;??A?е???????λλ???????????
SWAP A ;??A?е???????4λ??????
????(A)=73H???????CPL A?????????У?
73H??????????01110011??
??λ?????? 10001100???????8CH??
RL A???(A)?е?????7λ?????0λ????0λ??1λ???????????
????A?е???68H?????RL A??68H??????????01101000????????????????01101000???11010000????D0H??
RLC A?????(A)?е???????λλ(C)??????λ??
????A?е???68H??C?е???1???????RLC A
1 01101000??????0 11010001???????C??λλ????????0????(A)??????D1H??
RR A??RRC A?????????????ο?????????????????????ɡ?
SWAP A?????A?е????????4λ???н?????
????(A)=39H???????SWAP A???A?е??????93H???????????????????????????????16?????????1??16??λ???????4??????λ?????????????????(A)=39???????H?????SWAP A???????(A)=93????????????????????39???????????10111???????0001??0111??4λ??0001????4λ??0111??????????01110001???????71H????113??
????????(A)=39H?????????????д?????????
CPL A
RL A
CLR C
RRC A
SETB C
RLC A
SWAP A
?????????????????????????????????????????Щ??????????????Щ?????????????????????????????顣
????壺
ORG 0000H
LJMP START
ORG 30H
START:
MOV SP,#5FH
MOV A,#80H
LOOP:
MOV P1,A
RL A
LCALL DELAY
LJMP LOOP
delay:
mov r7,#255
d1: mov r6,#255
d2: nop
nop
nop
nop
djnz r6,d2
djnz r7,d1
ret
END
?????????????д????У???????壬?????????
???????????????????????????????????????°ɡ?
?????ORG 0000H??LJMP START??ORG 30H????????????????START?????MOV SP??#5FH????????????????????????????????????????????????????????????????????????????????????ɡ?
MOV A??#80H????80H????????A??????????????????????????
MOV P1??A????A?е?????P1?????????A?е????80H?????????????????80H?????P1??????80H???????10000000B?????????????????????????????P1??7???LED????????????????LED???????????????γ??????“????”??????????RL A??RL A???A?е?????????????????????????????????????01H???????00000001B????????????????P1??0???LED?????????????????????????????“????”????????档??????????????????????????????????“????”“??”???????????????LOOP??(LJMP LOOP)??????????????????????????????????????????????????P1??1?????????????????????????γ???“????????”???????
????admin ?????????2018-05-19
