Led sáng dần port 1 (8951)

ORG 00H
MAIN:
MOV P1,#00000000B;Trạng thái led tắt hết
CALL DELAY
MOV P1,#00000001B;Led p1.0 sáng
CALL DELAY
MOV P1,#00000011B;led p1.0,p1.1 sáng
CALL DELAY
MOV P1,#00000111B;led p1.0,p1.1,p1.2 sáng
CALL DELAY
MOV P1,#00001111B
CALL DELAY
MOV P1,#00011111B
CALL DELAY
MOV P1,#00111111B
CALL DELAY
MOV P1,#01111111B
CALL DELAY
MOV P1,#11111111B
CALL DELAY
JMP MAIN
DELAY:
MOV R0,#200
LAP:
MOV R1,#200
LAP2:
NOP
NOP
NOP
DJNZ R1,LAP2
DJNZ R0,LAP
RET