> Can't see that (latch) being the reason, but tried anyway and it > still does not work I thought it might. Not so long ago I mistakenly used PORT instead of LAT and spent some time trying to figure out why 'my stupid PIC doesn't work'. For the life of me I can't remember the piece of code or I'd show you. I do recall it wasn't that different from your problem IMHO it's still good practise to use LAT for out and PORT for in Are the PORTA pins floating ? Joe --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .