Hi. Excuse me for jumping in at this late stage, but I have been away on vacation. I am catching up on my reading and I can't resist throwing my two cents worth into this arena ... > Neil Gandler wrote: > > [ ... ] > > Correct me if I wrong but, this is how I view this error scheme. >If I send a 32 bit word, and then an identical 32 bit word. The odds >of those words being corrupted in the EXACT same pattern are >extroadinarily low. I agree with you. However, what about stuck bits? You may want to send the 32-bit word and then another 32-bit word that is the complement of the first word. BTW, I think your concept (and mine) is an overkill. However, it is simple to implement, and if you have the bandwidth capability, who cares? -Kevin.