whoami@unix.cis.pitt.edu (Karol Gieszczykiewicz) (01/03/91)
Greetings. I have several question, some related to this group: 1) I am thinking of building a processor card for use as a speedup for a VGA 3D modeling program* . I would like to know if it is feasible to use the 26-pin "expansion" edge-connector on most VGA cards for this purpose. (I think I have seen some cards that do this...) 2) How do I program the expantion port? I have simple VGA manuals but they do not mention how to get data from/to the extra port... Anyone know of an example - anything would be nice. 3) Is there BIOS support for the 26-pin connector? I saw nothing to indicate this, but I have been wrong before :-) 4) And last, does anyone know if I can access the VGA's internal RAM with DMA, copy it to a different card, work on that data, and then copy it back? Nothing fancy. Take care. P.S. Please use e-mail. I will summarize if there is demand. * I would like to add a processor to the VGA card to make realtime animation possible - perhaps 30 to 50 frames/sec using simple line drawings (no filling in) but at 1024 X 768 and 4 colors. I am told that this can not be done with just the VGA card alone - even in a 33MHz 80386/80387. Anyone?