Hey guys, i wrote a program in assembly for the 80C51 and it worked but now i have to write the same one for the PIC16F84A in assembly language, and it just wont work. Can someone figure out what mistakes i did?
This program controls one 7-segment display to count from 0-9 whilst the other 7-segment display to count from 9-0 at the same time.
If you want to see the 80C51 program (in asm) just tell me and i'll post that too.
Can anyone figure out what's wrong in this program i wrote?? Plz help me!
LIST P=16F84 INCLUDE "P16F84.INC" __CONFIG _XT_OSC & _PWRTE_ON & _WDT_OFF & _CP_OFF RADIX HEX ; PORTB EQU 0x06 PORTA EQU 0x05 ; R1 EQU 0x0C R2 EQU 0x0D R3 EQU 0x0E ; ORG 0 ; MOVLW 0x1F TRIS PORTA ; MOVLW 0x00 TRIS PORTB ; CLRF PORTA CLRF PORTB ; REPEAT: MOVLW 0x0F MOVFW PORTB ; MOVLW 0x0F MOVFW PORTB ; PA_0: BTFSC PORTA,0 GOTO PA_0 ; CALL DISP BTFSC PORTA,0 GOTO PA_0 ; MOVLW 0x06 MOVFW PORTB MOVLW 0xF6 MOVFW PORTB ; CALL DISP ; MOVLW 0xDA MOVFW PORTB MOVLW 0xFE MOVFW PORTB ; CALL DISP ; MOVLW 0xF2 MOVFW PORTB MOVLW 0xE0 MOVFW PORTB ; CALL DISP ; MOVLW 0x66 MOVFW PORTB MOVLW 0xBE MOVFW PORTB ; CALL DISP ; MOVLW 0xB6 MOVFW PORTB MOVLW 0xB6 MOVFW PORTB ; CALL DISP ; MOVLW 0xBE MOVFW PORTB MOVLW 0x66 MOVFW PORTB ; CALL DISP ; MOVLW 0xE0 MOVFW PORTB MOVLW 0xF2 MOVFW PORTB ; CALL DISP ; MOVLW 0xFE MOVFW PORTB MOVLW 0xDA MOVFW PORTB ; CALL DISP ; MOVLW 0xF6 MOVFW PORTB MOVLW 0x60 MOVFW PORTB ; CALL DISP ; GOTO REPEAT ; ; DISP: MOVLW 1 MOVFW R3 LP3: MOVLW 0x0F MOVFW R2 LP2: MOVLW 0x0F MOVFW R1 LP1: DECFSZ R1 GOTO LP1 DECFSZ R2 GOTO LP2 DECFSZ R3 GOTO LP3 ; RETURN ; END ; ;At blast time, select:- ; ;memory unprotected ;watchdog timer disabled ;standard crystal (4MHz) ;power up timer on