CJ1M INTERRUPT COUNTING

[BITS N BYTES 66]

I cannot get the CNT instruction to work within an interrupt. The CNT input is conditioned with the ALWAYS ON FLAG [CF113]. Though the Instruction Set manual states that the CNT instruction CAN be used within an interrupt I am baffled how to make it work. Using a statement |+[400] D0 #0001 D0| appears to work fine!! I just cannot get the CNT to work. HELP!!

[Jay Anthony 118]

I am baffled why you would need a CNT instruction in an interrupt subroutine. Why not us +B?

[bot1101 0]

The CNT instruction looks for a positive edge to trigger on. An always on contact has no such transition.

[BITS N BYTES 66]

Thanks for the explanation. Guess I will stick with the ++(590) [binary increment] or +(400) [binary addition].