"In announcing their new, non-volatile Spartan-3AN family this week, it is clear that Xilinx approached the non-volatile problem differently. Often, on your board, you’d pair a low-cost SRAM FPGA like a Spartan-3 device with a commodity flash memory for storing the bitstream and possibly other user data. Xilinx just took the die for that flash memory and the die for that FPGA, stacked them using packaging techniques now common in cell phones and other space-constrained devices, and dropped them into a single package. Voila! A non-volatile FPGA. "

Reading that little drib.....it may be more prevalent than we realize...if that highlighted quote is comparing similar component arrangements of logic and flash memory and removing RAM as an un necessary.

doni