> _DEBUG_ON_4L EQU H'7F'; Background debugger enabled
> _DEBUG_OFF_4L EQU H'FF'; Background debugger disabled
> You have mixed the two EQU

Thanks Martin.

Yes, I did spot that right after I posted and changed it to FF

Didn't make any difference though because my MPLAB still doesn't
recognise DEBUG OFF as an option.

For now I disable debug by editing the hex file

In the line

02000500880170

01 is the value in Config4L after a build

I change that to 81 (and the 70 checksum to F0)

INT0 interrupt now works as expected, so the real problem is
my version of MPLAB

Joe


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