In SX Microcontrollers, SX/B Compiler and SX-Key Tool, John Kauffman wrote:

Stef:

I'm not the greatest, but I'll throw in what I know.

Sounds like you have MyInputPin and MyOutputPin. You want the pulses on MyOutputPin only while MyInputPin is high.
I don't know of a way to turn on and off execution of timed interrupts at run time if you are using teh INTERRUPT RATE directive. 
So I would keep running the ISR every 20 mSec and within there either send a pulse or not depending on state of MyInputPin


' ** untested **
INTERRUPT 500
ISR_Start:
IF MyInputPin=1 THEN
	PULSOUT MyOutputPin,5                  ' units by default are 10 uS
ENDIF

ISR_Exit:
  RETURNINT

>>>>>>>>>>>>>>>>>>>
Alternately you could not set RATE and instead code the RTTC with prescalar. I think that call for ISR can be turned on and off at run time by setting the Option bit 6.

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