I've got a sealed, NIB, RasterOps PaintBoard Prism/ Prism GT User Guide & SW coming in from eBay for a future, bare card snipe, maybe that'll have the drivers you need to kick a RasterOps Video Card into DSP Overdrive on your RasterOps Accelerator II. Maybe it'll work with other non-accelerated VidCards too, but I wouldn't count on it.

I've also got a sealed package coming. hopefully for my Storm DSP Card: Picture Press by Storm - Vintage PhotoShop. This may be the case for yur DSP card too. It's a little more difficult for me to visualize how a DSP card would add ColorQuickDraw Acceleration to another card without a direct card to card connector scheme, but accelerating PhotoShop filter ops would add a lot more utility overall, than Video Acceleration back when DSPs were mainly used in DTP workstations.