You could have the pulse counting code check a flag in memory then exit when
it is set.

The interrupt level code would then set the flag:

 cblock xxx
    flags
 endc

 interrupt_handler:
       ...
       bsf        flags,0


 pulse_count:
        bcf       flags,0
 pulse_count_loop:
        ...
        ...
        btfss    flags,0
        goto    pulse_count_loop
        goto    start_all_over

Bob Ammerman
RAm Systems
(contract development of high performance, high function, low-level
software)

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