>> Sure glad that wasn't a PicMaster Emulator! Gets kinda expensive! In general, all my PIC stuff has only +5V on the board, so damage possiblity is limited. Recently I had a 16c74a driving a serial DAC driving a 4051 demux, driving a 324 op amp. Accidentally shorted the +15V on the 324 to an input, blowing the 4051 and the DAC. Luckily it did not get back to the PicMaster! << In all fairness to makers of emulators, how often is an emulator useful for anything other than the code download ability (which exists semi-natively in the 16C84/16F84 as well as many of Atmel's parts)? I have used emulators myself, and have on some occasions made use of the live debugging facilities they offered, but often I find the extra bulk of the emulator (having to balance everything on the desk, etc.) to be a major nuisance. I think the philosophy in the micro industry is that anyone who's anyone will spend $10K-$20K on emulation equipment for any micro they're going to use, and at the very bottom of the scale that philosophy sorta makes sense (some 4-bit micros don't exist AT ALL in anything other than mask-ROM versions). In the PIC range, though, I think in-circuit-erasable-programmable micros are in many cases as useful as emulators, if not moreso (no giant ribbons hanging around); I'm pained by the fact that we **STILL** don't have anything bigger than the 16x84 in such a configuration... [soap box mode off]