Hey, thanks for the reply. I know what you mean, I'm actually more or less a system designer too, but I'm putting together requirements for a system; specifically an aircraft condition-monitoring & management system. If it was just going to log data I could have done with any processor, but my system has to be able to resolve faults (root cause analysis and such) plus maybe do trend analysis to figure out if things are going to really go bad some time down the line.
And yes, I've had a gander around Honeywell and other such companies' sites and they (understandably) hold their cards close to their chest, especially for the aircraft being designed today. I don't want to reply on a 15-year-old standard (ARINC 624-1) built to certify systems from those days...