Cool! What I'm trying to do is to open up more NuBus and Pseudo Slot memory blocks in the artificially limited IIsi memory map.

I'd like to use the DuoDock's Gemini Card to get a second (7 inch) NuBus Card into the Box underneath the Full Length Rocket 33 . . .

. . . as well as the Radius Color Pivot II PDS Card and PDS NIC going underneath the MoBo at the same time! }

I don't think disabling the MoBo's Vampire Video poses any problem at all, the System Polls the Video sense lines for PixelCount & Color Depth on startup and doesn't seem to buffer any of Bank A's Memory if no monitor is hooked up to the port (or set up in the PRAM?) so hacking a FULL Bank A shouldn't be problematic.