But what are they emulating with the fpga?
what makes you think they are emulating anything? could be an entirely new vga chip deign. or they may try to emulate a cirrus or other already supported card and chip to make use of existing drivers.
im not sure what this particular fpga is capable of, but its already limited to zorro2 from the sounds of things. i like the idea of using a commercial foga module. not sure what bigger modules there are for other projects, such as z3.