calling subroutine triggers interrupt

[Darrel Taylor]

I think Steve meant to clear the flag before the GOSUB TEST, not before the ON INTERRUPT GOTO.

It GOSUB's from an area that is DISABLEd to one that is ENABLED.
If the flag is set, it will jump to the ISR.
It may jump, even if it's not set.

The ISR should verify that the flag is set before doing anything.

[Bruce]

Without INTCON.7 set before ON INTERRUPT, it's going to jump to your interrupt vector all the time in any code section where interrupt code is inserted. If you just set INTCON.7 it should never jump there until the hardware interrupt clears INTCON.7 automatically.

INTCON = %10000 doesn't set INTCON.7 - so the ON INTERRUPT code inserted always assumes an interrupt condition exists.

[Alexey]

Darrel, Bruce,

Thank you!

I tried to move "On interrupt goto" to the very top and also check flag in the interrupt handler, either one works just fine.

Will play with INTCON.7 tomorrow morning.

Thanks again, the problem seems to be solved

Alexey