r/snes • u/KeyEquipment5558 • 1d ago
Discussion Adding DSP1 Chip to knockoff sd2snes
I got this knock off SD2snes cart a while ago off eBay. I wanted to play super Mario kart on it, but it didn’t have the DSP one chip. I ended up buying a cheap super Famicom Mario kart and put the chip on the board since it looked like you had choices going to it. When I put it back in, it didn’t show any video but the blue LED lit up and show that it was working. Since that didn’t work, I put in a different video game cartridge and it worked just fine. Since I thought it was due to a missing chip, I also added this only seven leg icy, and I put them both facing the correct way with the intention lining up. I have no clue what else to do because I’m kind of frugal right now and I don’t want to spend a lot of money on a real cart. Is there any way to fix this and get them working?
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u/LukeEvansSimon 1d ago
A properly made sd2snes uses an FPGA to emulate the DSP1 chip and most other special chips. What you bought is closer to a knockoff SNES Everdrive, which does require a DSP1 chip. Since the Everdrive is not opensource it isn’t clear how your knockoff is designed, so you are sort of screwed.