On 11/18/2012 05:47 PM, Conrad wrote:
The FPGA used on the original card is possible to get right now, but the supply will dry up before long, so the next step will be to reengineer it to use a more modern FPGA, to make it a bit more futureproof.
Unless the bitstream for that late-80s Xilinx part is directly applicable to more recent FPGAs, you have your work cut out for you. There have been some steps taken towards reverse engineering raw bitstreams into logic architecture, but it's anything but trivial.
All that said, I wish you the best of luck. It would be great to see this come about!
In theory, I would think that a modern GS accelerator could be built with a WDC 65816, a recent generation Xilinx or Altera part and a couple of glue chips. If I had more free time and about half the knowledge of the Mike Mahons and Alex Freeds of the world, I'd be glad to help :-).
Steve