nonSNES

An Open-Source HardWare (OSHW) recreation of the Super Nintendo Entertainment System (PAL)

The design tries to be a 1:1 recreation of the original SNSP-CPU-01 Rev5 and SNSP-CPU-1CHIP boards.

Some of the planned changes and improvements

• Replace the obsolete trimmer capcaitor with an in-stock one
• Replace the reset button with a regular mechanical keyboard switch
• Include an AV out connector board using mousebites
• Replace the U11 regulator (the old mitsumi one had a nonstandard pinout for reset monitors)
• Include controller port board
• Remove the CIC/swap it for a CIC replacement
• Region switch
• Replace the audio RAM
• Replace the S-CLK clock generator
• Include RGB bypass mod

Tips if you decide to make this/get it made

The dimensions are 188x159mm.

If you decide to get it assembled I suggest only getting the bottom side with all the SMD components done and doing the top yourself. The bottom only has jellybean capacitors, resistors, diodes, transistors so it's not going to be very expensive.

For the top you will have to salvage the Nintendo components. The video RAM is still being made by S@Tech (HM62256). The audio RAM can probably also be easily replaced, I haven't looked into this yet. Feel free to open an issue about it.

Roadmap:

See the checklist

Inspired by

https://github.com/Redherring32/OpenTendo

Other Projects

NTSC Versions: OpenSFC

Credits

ArcadeTV for the stripped scans: https://circuit-board.de/forum/index.php/Thread/13913-STRIP-CLUB-PCB-Scans/

arzi84 for the schematic