Post by thread:Flashgun Reset

Just a quick note on something I noticed the other day. This sort of ties in with the recent discussions of PIC firmware behaving unexpectedly in windowed & non-windowed devices if a programmer forgets to initialise registers before using them. I was taking a photograph of a piece of prototype equipment which used a C54 JW part with the window uncovered (firmware was still being 'improved' !). The equipment was operating at the time. The instant the flash fired the PIC reset - in fact it underwent a full power on reset as the TO & PD bits were being checked. This effect appears to be very repeatable and also occurred on a C57 - JW part with the window uncovered. I don't know if this effect is of any use and I haven't checked if the flash affects any other registers etc., but it is probably something to be aware of. Sean Hagan spam_OUTbimeTakeThisOuTbath.ac.uk