cổ điển,1 cách dùng lệnh quay nhé.

DEMO
CODE
ORG 00H
MAIN:
CALL SANGDUOI
JMP MAIN
SANGDUOI:
MOV P0,#01111111B
CALL DELAY
MOV P0,#10111111B
CALL DELAY
MOV P0,#11011111B
CALL DELAY
MOV P0,#11101111B
CALL DELAY
MOV P0,#11110111B
CALL DELAY
MOV P0,#11111011B
CALL DELAY
MOV P0,#11111101B
CALL DELAY
MOV P0,#11111110B
CALL DELAY
MOV P0,#11111111B
CALL DELAY
MOV P2,#01111111B
CALL DELAY
MOV P2,#10111111B
CALL DELAY
MOV P2,#11011111B
CALL DELAY
MOV P2,#11101111B
CALL DELAY
MOV P2,#11110111B
CALL DELAY
MOV P2,#11111011B
CALL DELAY
MOV P2,#11111101B
CALL DELAY
MOV P2,#11111110B
CALL DELAY
MOV P2,#11111111B
CALL DELAY
MOV P3,#01111111B
CALL DELAY
MOV P3,#10111111B
CALL DELAY
MOV P3,#11011111B
CALL DELAY
MOV P3,#11101111B
CALL DELAY
MOV P3,#11110111B
CALL DELAY
MOV P3,#11111011B
CALL DELAY
MOV P3,#11111101B
CALL DELAY
MOV P3,#11111110B
CALL DELAY
MOV P3,#11111111B
CALL DELAY
MOV P1,#01111111B
CALL DELAY
MOV P1,#10111111B
CALL DELAY
MOV P1,#11011111B
CALL DELAY
MOV P1,#11101111B
CALL DELAY
MOV P1,#11110111B
CALL DELAY
MOV P1,#11111011B
CALL DELAY
MOV P1,#11111101B
CALL DELAY
MOV P1,#11111110B
CALL DELAY
MOV P1,#11111111B
CALL DELAY
RET
DELAY:
MOV R0,#100
LAP:MOV R1,#150
LAP1:NOP
NOP
NOP
DJNZ R1,LAP1
DJNZ R0,LAP
RET
CODE LỆNH QUAY:
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