This is my first post here so let me introduce myself: my name is Olivier and I'm french.
I'm interested in emulation of old computers and game consoles, so I've tried several emulator systems on PC, and recently on a Raspberry Pi (I'm quite happy with RetroPie, btw).
In the meantime, I was curious to know more about FPGA-aided emulation projects and I've discovered this MiSTer project, which looks very interesting and well advanced.
I have got a Terasic DE1-SOC board which is now "underused" and I was wondering if you know somebody who would have tried to port MisTer on that board.
I've read this post: http://www.atari-forum.com/viewtopic.php?f=117&t=33067&hilit=de1+soc#p338011 from one year ago.
Comparing the DE1-SOC with the DE10-nano, the HPS parts look similar, but the main differences I can see on the FPGA fabric side are:
- The DE1-SOC has ~25% less ALM and embedded memory blocks
- The DE1-SOC has only VGA+"traditional" Audio output instead of HDMI
- The USB ports are Host only (type A), not OTG
- However, it has 64MB of SDRAM on board, while the nano kit has none
So, if nobody has tried to port the project on DE1-SOC yet, do you know how difficult it would be to do it ?
BTW, I'm an electronics engineer and have some experience in FPGA and SOC-FPGA firmware design (especially on Altera/IntelFPGA devices, mainly in VHDL), so I could try to retarget some of the emulator cores Quartus projects.
I've seen that most cores require an external SDRAM daughter board on the GPIO connector. Could the on-board SDRAM of the DE1-SOC be used instead ?