Timer interupt

#1
Using an 08M, is there any way to get an interupt (or equivalent) after a set amount of time? I need a sort of watchdog timer to interupt a process after several minutes of operation (non-critical timing). Perhaps something like being able to "peek" at the timer counter? I don't want to use "wait", as I need to continue processing during the timed period.
 
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