Hi Alain.... thanks for getting involved!

Quote Originally Posted by Acetronics View Post
you have .200µs for a timer 1 without prescaler increment ... ( internal clock is 1/4 the Xtal Freq ... )
Aha [the sound of a small penny dropping on a hard surface]...how naive of me - I thought that for my 20p investment, I'd get a positive whizzy PIC...but now you're breaking the news to me that I'm actually only getting 5Mhz of 'doing stuff' speed?!

Damnit...I want my 20p back.

The full code/config will have to wait until tonight (I left it at home!)...so the universe will need to wait with baited breath for 6 hours or so before establishing where the other 2,500 'clock count' total @1khz went (my wife is presently checking behind the sofa)

To paraphrase Arnie "I'll be back"

Merci beaucoup