PIC16f690 LEDS branden alleen..

BESTURINGSTECHNIEK
; Eindopdracht - Interrupt - ledjes van links naar rechts laten knipperen en wanneer er op het knopje (SW1) word gedrukt,
; alle vier de ledjes 4x tegelijk laten knipperen en vervolgens doorgaan met waar die mee bezig was.

#include <p16F690.inc>
__config (_INTRC_OSC_NOCLKOUT & _WDT_OFF & _PWRTE_OFF & _MCLRE_OFF & _CP_OFF & _BOR_OFF & _IESO_OFF & _FCMEN_OFF)

cblock 0x20
Display
Counter
endc
; Flag Definitions

cblock 0x70 ; put these up in unbanked RAM
W_Save
STATUS_Save
endc

org 0 ;start processor
goto Start
nop ; wacht (1)
nop ; wacht (2)
nop ; wacht (3)
ISR
movwf W_Save ; org 4
movf STATUS,w
movwf STATUS_Save

btfsc INTCON,T0IF
goto ServiceTimer0
goto ExitISR

ServiceTimer0

bcf INTCON,T0IF ; clear the interrupt flag. (must be done in software)
movf Counter,w
btfss STATUS, Z ; Test of de counter 0 is
goto Zerostate

movlw 0x0F
xorwf PORTC,f ; Bitjes van PortC geflipt
decf Counter
goto ExitISR

ExitISR

movf STATUS_Save,w
movwf STATUS
swapf W_Save,f
swapf W_Save,w
retfie

Start

bsf STATUS,RP0 ; select Register Page 1
movlw 0xFF
movwf TRISA ; Make PortA all input
clrf TRISC ; Make PortC all output

movlw B'10000001' ;
movwf OPTION_REG ; configure
; bcf STATUS,RP0 ; back to Register Page 0

bcf STATUS,RP0 ; address Register Page 2
bsf STATUS,RP1
movlw 0 ;
movwf ANSEL
bcf STATUS,RP0 ; address Register Page 0
bcf STATUS,RP1

movlw B'10100000' ;
movwf INTCON

clrf Counter

MainLoop

btfsc PORTA,3 ; is the switch pressed (0)
goto Zerostate ; nee
movlw 4 ; ja, Counter=4
movwf Counter ;
movf Display,w ; Copy the display to the LEDs
movwf PORTC
goto MainLoop

Zerostate

movlw 0x0F
movwf Display

movf Display,w
movwf PORTC

bcf STATUS,C ; ensure the carry bit is clear
rrf Display,f
btfsc STATUS,C ; Did the bit rotate into the carry?
bsf Display,3 ; yes, put it into bit 3.
goto MainLoop

return

end

Weet iemand wat er verkeerd gaat, want de ledjes branden alle tegelijk bij mij