Here we go...
Put together an adapter from jumper wires - the pinout above is correct. Pin 1 is closest to the top of the card (opposite of the PDS connector)
It's putting out 1152*864 and I am getting 2bit grayscale with the 256K VRAM on there right now.
Picture is smashed because of the pivot resolution. Played around with different settings on my VGA adapter but it always outputs the same resolution.
In fact if I set it to do 640*480 it will only display the Radius logo but won't show up in the monitors CP.
Also the card won't show up correctly in SlotInfo/Tattletech if there is no screen connected (or some weird sense line setup the card won't understand as it seems)
So they do sense if a screen is connected and disable the card so you don't get an external ghost display.
JP4 and JP5 will let you choose between slot IDs A and B. You have to move both jumpers at the same time and into the same position.
Couldn't figure out yet what JP1-JP3 do. If I change any of them things break. I get either a distorted screen or no screen at all.
Now to see if I have the correct type VRAM around to fill those two empty slots...