是不是這樣的?
ORG?00H
AJMP?MAIN
ORG?30H
MAIN:
MOV?P0,#0C0H?;***陽管0的段碼
MOV?A,#01
MOV?R1,#04
MAIN1:
MOV?P2,A
ACALL?D05S
RL?A
DJNZ?R1,MAIN1
AJMP?MAIN1
D05S:
MOV?R7,#10
MOV?R6,#100
MOV?R5,#250
DJNZ?R5,$
DJNZ?R6,$-4
DJNZ?R7,$-8
RET
END