are there any current-generation FPGA's from brand X that you can program fully with a 1 Mb PROM?

IIRC, the 1 Mb part on one of my Insight EVB's for SPARTAN-II (XC2S100) FPGA's has a 1 Mb prom, and that's almost big enough.

In order to FULLY utilize an XC2S200E, you need a 4 Mb part, though it's oversized. At their cost, however, you'd think they'd have produced a part that "fits" their FPGA.

The problem with FPGA's, these days, is that if you want to use them to do useful work, you have to spend the money the mfg touts as your savings from earlier generations on bigger PROM's and then spend even more on level shifters. With 1.2 volts, it's hard to do anything. Try driving a power mosfet. Now consider that app that requires 136 of them.

RE