Commander X16

It is the same chip..  I did not realize that.. Ram is cheep..  It is just the addressing scheme on the fpga..  Memory is cheap.  you can map the video memory  

As far as I know, the vera should be able to do any mode that was on the vga connector.  Why did you stop at vga? the fpga should be able to handle the color concepts and the higher pixel maps. vga is 16 bit and svga 24 and the other 32.  why did you use a 6502 instead of a 65c02-14?