Led sáng dần tắt dần theo chiều ngược lại (8951)

ORG 00H
 
MAIN:
CALL CON1
CALL CON2
JMP MAIN
CON1:;SANG DAN
MOV P1,#00000000B
CALL DELAY
MOV P1,#10000000B
CALL DELAY
MOV P1,#11000000B
CALL DELAY
MOV P1,#11100000B
CALL DELAY
MOV P1,#11110000B
CALL DELAY
MOV P1,#11111000B
CALL DELAY
MOV P1,#11111100B
CALL DELAY
MOV P1,#11111110B
CALL DELAY
MOV P1,#11111111B
CALL DELAY
RET
 
CON2:;TAT DAN
MOV P1,#11111111B
CALL DELAY
MOV P1,#01111111B
CALL DELAY
MOV P1,#00111111B
CALL DELAY
MOV P1,#00011111B
CALL DELAY
MOV P1,#00001111B
CALL DELAY
MOV P1,#00000111B
CALL DELAY
MOV P1,#00000011B
CALL DELAY
MOV P1,#00000001B
CALL DELAY
MOV P1,#00000000B
CALL DELAY
RET
 
DELAY:
MOV R0,#200
LAP:
MOV R1,#200
LAP2:
NOP
NOP
NOP
DJNZ R1,LAP2
DJNZ R0,LAP
RET
END