Yeppers, I know what you mean! :approve:

I've been ruminating on possibilities for the SuperDuo hack for something like ten years now! :-x

So far as a Video Card project for the SE/30/IIsi PDS goes: I find it difficult to believe that you'll need any more than the signals I've documented on the SuperMac IIsi PDS Adapter.

Sure as $#!^, if I were working on that IIsi PDS Adapter made specifically to support SuperMac's Video Cards, I'd have put those overvoltage noise suckers on every necessary line!

But then again, I'm just a . . .

When it comes to those artifacts at startup: take a page out of the Radius Playbook. The DeclROM for every Video Card of theirs that I've used, or collected over the years, has thrown up a gray screen with the Radius Logo in the corner long before extensions load . . . or the Happy Mac hits the stage, for that matter . . .

. . . poof . . . no artifacts! }