I found a pic of the SE version of the accelerator with a QFP SMT 68030 on board along with the PDS connector.

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credit: FAB page! http://www.d4.dion.ne.jp/~motohiko/macseopen.htm There are really great SE project shots on that page.

The other suggestions for the Portable's PDS have got the wooden cogs in my noggin' spinning in another direction. Given the power relay work-around, there's probably not a lot to keep something like a Radius TPD card from working in there as well.

How hard would it be to turn the TPD card's signals into something a MultiSync TPD with BNC inputs could display? }