Hi, okay I've been playing about with comparator interrupt now & think I have got the hang of it using flags. The code below is something little I came up with

Now I think I would like to implement the nap command now, or do you think I should learn something else before jumping to the nap command?

Thanks again,
Rob

Code:
'PIC 12F683

#CONFIG 
   __config _INTRC_OSC_NOCLKOUT & _WDT_OFF & _MCLRE_OFF & _CP_OFF
#ENDCONFIG

PAUSE 50 'wait for hardware to settle

DEFINE OSC 4 '4mhz ocsillator
ANSEL = %00000010 'pin 6 analog
CMCON0 = %00000100 'comparator mode
VRCON = %10101000 'voltage reference
TRISIO = %00000010 'pin 6 input

ON INTERRUPT GOTO int1 'interrupt handler is int1
INTCON = %11001000 'enable GIE and GPIE; clear GPIF
PIE1 = %00001000 'enable comparator interrupt

POT1 VAR CMCON0.6 'read potentiometer
LED VAR GPIO.2 'led pin 5
loop1 var word 'loop1 counter

bitTest var bit 'Debug test bit.  Set/Clear in ISR and Check in main

bitTest = 0
Loop1 = 0

ENABLE
main:

IF bittest = 1 THEN 
GOTO FLASH
ENDIF
    
LOW LED

GOTO main


ENABLE
FLASH:



do
for loop1 = 1 to 1000
HIGH LED
PAUSE 1

NEXT LOOP1

for loop1 = 1 to 1000
LOW LED
PAUSE 1

NEXT LOOP1

IF bittest = 0 THEN
GOTO main
ENDIF

LOOP
  
    
DISABLE 'disable interrupts in handler
int1:
    
if PIR1.3 = 1 then  'Comparator Interrupt fired (must be cleared before resume)
BITtest = pot1
ENDIF 

INTCON =%11001000 
PIR1 = %00000000 'reset CMIF
RESUME 'where left off
ENABLE 'enable interrupts