I prefer my Replay board
http://www.fpgaarcade.com
more Ram(32MB) more flash (2G SD card) , really big Xilinx FPGA, 2 x db9, 2 x ps2, high quality DAC, buffered and filtered 3x8 bit DAC, SD card with 4 bit SD mode, expansion connector, ARM7 controller and more importantly a supported Minimig port and several other platforms.
Sorry Frederic, I couldn't resist this
Of course yours is better. But it is too expensive, my friend :-).
I am looking for something more affordable.
Concerning the RAM, I have option for 16, 32 or 64MB, I also have a 2GB SD Card and I use FatFS with LFN support.
What Spartan3 size do you have ? 3 millions gates ?
The EP3C25 I am using is equivalent to a 1.5 millions gates Spartan.
Right now, I am coding a Minimig AGA in VHDL, most of the Alice chip with an integrated SDRAM controller is done.
Yaqube's code is actually very useful for this porting.
Regards,
Frederic