Pemrograman Assembly - Program LED menyala sesuai dengan penekanan switch

Program LED menyala sesuai dengan penekanan switch:

; ============

; Judul: Program Input Push Button & Output LED

; Port : Port0 => DISPLAY LED

; Port1 => -

; Port2 => -

; Port3 => INPUT PUSH BUTTON

; Ket : LED menyala sesuai dengan penekanan switch

; -----------

; By : ARC. Robotica Club

; ===============




$MOD51

ORG 0000H

AJMP START

ORG 0100H

DELAY: MOV R5, #04H

DEL1: MOV R6, #002H

DEL2: MOV R7, #0BFH

DJNZ R7, $

DJNZ R6, DEL2

DJNZ R5, DEL1

RET


START: MOV SP, #30H

LOOP: 

MOV A, P3 ; read switch

CPL A ; inverse

MOV P0, A ; write LED

SJMP LOOP

END