C언어

#include<reg51.h>

void main(void)

{

int i;

while(1){

P1 = 0xf0;

for(i=0; i<30000; i++);

P1 = 0x0f;

for(i=0; i<30000; i++);

}

}

L4002: 7590F0 MOV 90, #F0

L4005: E4 CLR A

L4006: FF MOV R7, A

L4007: FE MOV R6, A

L4008: 0F INC R7

L4009: BF0001 CJNE R7, #00, 400D

L400C: 0E INC R6

L400D: BE75F8 CJNE R6, #75, 4008

L4010: BF30F5 CJNE R7, #30, 4008

L4013: 75900F MOV 90, #0F

L4016: E4 CLR A

L4017: FE MOV R6, A

L4018: FF MOV R7, A

L4019: C3 CLR C

L401A: EF MOV A, R7

L401B: 9430 SUBB A, #30

L401D: EE MOV A, R6

L401E: 6480 XRL A, #80

L4020: 94F5 SUBB A, #F5

L4022: 50DE JNC 4002

L4024: 0F INC R7

L4025: BF0001 CJNE R7, #00, 4029

L4028: 0E INC R6

L4029: 80EE SJMP 4019

L4000: 012B AJMP 402B

L402B: 783F MOV R0, #3F

L402D: E4 CLR A

L402E: F6 MOV @R0, A

L402F: D8FD DJNZ R0, 402E

L4031: 758107 MOV 81, #07

L4034: 0102 AJMP 4002

어셈블리어

ORG 8000H

MAIN: MOV P1, #0F0H

CALL DELAY

MOV P1, #0FH

CALL DELAY

JMP MAIN

DELAY: MOV R0, #23

LOOP1: MOV R1, #100

LOOP2: MOV R2, #100

DJNZ R2, $

DJNZ R1, LOOP2

DJNZ R0, LOOP1

RET

END

L8000: 7590F0 MOV 90, #F0

L8003: 12800E LCALL 800E

L8006: 75900F MOV 90, #0F

L8009: 12800E LCALL 800E

L800C: 80F2 SJMP 8000

L800E: 7817 MOV R0, #17

L8010: 7964 MOV R1, #64

L8012: 7A64 MOV R2, #64

L8014: DAFE DJNZ R2, 8014

L8016: D9FA DJNZ R1, 8012

L8018: D8F6 DJNZ R0, 8010

L801A: 22 RET