;This code uses our canned delay loop to flash all of the LED's on PORTC

   list      p=16F1455        ; list directive to define processor
    #include "p16F1455.inc"        ; processor specific variable definitions
 __CONFIG _CONFIG1, _FOSC_INTOSC & _WDTE_OFF & _PWRTE_OFF & _MCLRE_ON & _CP_OFF & _BOREN_ON & _CLKOUTEN_OFF & _IESO_ON & _FCMEN_ON
 __CONFIG _CONFIG2, _WRT_OFF & _CPUDIV_NOCLKDIV & _USBLSCLK_48MHz & _PLLMULT_3x & _PLLEN_DISABLED & _STVREN_ON & _BORV_LO & _LPBOR_OFF & _LVP_ON

    errorlevel  -302 , -207             ; suppress message 302 from list file
  banksel OSCCON
  movlw B'00111110'
  movwf OSCCON
  banksel TRISC
  clrf TRISC
  banksel TRISC
  ; everything above this line is simply setting up the processor at 16 MHz, using PORTC as our output for LED's.  Go ahead and copy & paste it.

mainloop:
  movlw h'FF' 
  movwf LATC  ; turn on all of the LED's on PORTC
  movlw D'10'
  movwf H'072' ; load up our third RAM with whatever decimal number is in the W register in the line above. This is how many times we'll call the utility delay. 
                             ; We control how long the delay is with this number because everytime we call the utility_delay, we add 0.05 seconds to the delay
	        ; This current delay will be approximately 10 X 0.05 = 0.5 seconds.
delay_on:
  call utility_delay  ; every time we hit this line, we wait around for 0.05 seconds
  decfsz H'072', 1  ; every time we come back from the utility delay, we count down on our third register till we hit 0. Then we turn the LED's off.
  goto delay_on
  clrf LATC  ; turn off all of the LED's on PORTC
  movlw D'10'
  movwf H'072' ; load up our third RAM with whatever decimal number is in the W register in the line above. This is how many times we'll call the utility delay. 
                             ; We control how long the delay is with this number because everytime we call the utility_delay, we add 0.05 seconds to the delay
	        ; This current delay will be approximately 10 X 0.05 = 0.5 seconds. 
delay_off:
  call utility_delay  ; every time we hit this line, we wait around for 0.05 seconds
  decfsz H'072', 1  ; every time we come back from the utility delay, we count down on our third register till we hit 0. Then we go back and start over.
  goto delay_off  
  goto mainloop
  
  
  
utility_delay:  ; this subroutine is a utility delay that counts down from 255 255 times. That's a total count of 65025. It takes approximately 0.05 seconds at 16 MHz
  movlw D'255'
  movwf H'0070'  ; load 255 into first register
  movlw D'255'
  movwf H'0071'  ; load 255 into second register
subloop:
  decfsz H'0070', 1 ; count down in first register till we hit 0
  goto subloop
  movlw D'255'
  movwf H'0070'  ; load 255 into first register again
  decfsz H'0071', 1 ; count down 1 on second register. If we're at 0, we've now gone through 255 loops of 255. Return back to the main program.
  goto subloop
  return
  

  end  ; every program must have an end...at the end.  :)