You can use this program for small-size PICs, like PIC12F509 or PIC12F675.
The code example:

; Simple program in assembler language for PIC processor (PIC12F509)
; from www.RoboHobby.com
; May be used for timer for Kite Aerial Photography (KAP)
; as a timer program.
; Very esy can be corrected for other PICs.
;
; URL: http://www.RoboHobby.com/genius_g-shot_d612.jsp
;
;

list p=12F509
#include
count1 EQU 0x08 ;loop variable
count2 EQU 0x09 ;loop variable
count3 EQU 0x0A ;loop variable
count4 EQU 0x0B ;loop variable
count5 EQU 0x0C ;loop variable
count6 EQU 0x0D ;loop variable
ledset1 EQU 0x11 ;value 1 for output to the port
ledset2 EQU 0x12 ;value 2 for output to the port
GPI2 EQU 0x15 ;GPIO replacement for debug

;**********************************************************
; The program *
;**********************************************************
INDF EQU 00H ;
PCL EQU 02H ;
STATUS EQU 03H ;
GPIO EQU 06H ;
TRISIO EQU 85H ;
FSR EQU 04H ;
ORG 0x00 ;
clrf GPIO ;
movlw b'000101000' ;
bcf STATUS,05 ;
tris 6 ;
movlw 0x17 ;
movwf ledset1 ;
movlw 0x00 ;
movwf ledset2 ;
loop1 movf ledset1,w ;
movwf GPIO ;
cycle1 movlw 0x02 ;
movwf count1 ;
cycle2 movlw 0xFF ;
movwf count2 ;
cycle3 movlw 0xFF ;
movwf count3 ;
cycle4 decfsz count3,f ;
goto cycle4 ;
decfsz count2 ;
goto cycle3 ;
decfsz count1 ;
goto cycle2 ;
loop2 movf ledset2,w ;
movwf GPIO ;
cycle5 movlw 0x2F ;
movwf count4 ;
cycle6 movlw 0xFF ;
movwf count5 ;
cycle7 movlw 0xFF ;
movwf count6 ;
cycle8 decfsz count6,f ;
goto cycle8 ;
decfsz count5 ;
goto cycle7 ;
decfsz count4 ;
goto cycle6 ;
goto loop1 ;
END :
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