I've been sort of pondering the thought of using a microcontroller as the base of an ISA "soft video" card for vintage PCs. I was looking at things like the Graphics Gremlin and the kit to build a Trident 9000-based ISA VGA card, and realizing that 1) I don't think my skills or gear are up to SMD soldering, 2) at least the Trident part is 20-year-old stock with limited supply and questionable reliability, and 3) you…
My recent crazy idea was an FPGA attached to PCI (possibly PCI-e) interface and a modern video interface for retro gaming. Essentially, program the FPGA to be a Voodoo II. Problem is reverse engineering gets complicated, and you can still find Voodoo IIs on ebay.