Dunno, tired & blathering, but thanks to Strimkind, I've got a certified dead 1400 MoBo to depopulate! Now I can finally begin to map/measure the traces leading to the ProcCard Connectors and the T-Rex/Card Cage Daughtercard Pins from the major ASICs.

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Glad to see its going to be useful somehow. It was the remainder of a 1400 I got with a good LCD but the bad board. Luckily I had a spare working 1400 bottom case. Matched up the good parts and off it went to a fellow 68k member!

Good luck with mapping the 1400 logic board. I'd like to see your results when you post them...even if I won't really understand 100% of how it all works.