The Sega CD I, A.K.A. The Mega CD I (in Japan) was the original Sega CD unit released in 1991.

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Is this a modchip?

Helow,

I took my Sega CD apart to find out how it worked and how it was designed inside to find this wierd chip

What is it

Answered! View the answer I have this problem too

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can you give us the markings on the chip as well as the board. Might help to identify....

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I think it got resolved. Just double check your chips with the ones listed in my answer. They should match, sorry its not a mod chip but still pretty cool console:)

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Those are great machines to restore and do have somewhat of a cult following. Just look at the Atari's and all the Pacman games that are now "so retro" Hang on to it and see if you can restore it. Good luck

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Deck the Halls
With tools and Fix Kits

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If the inscription on the board is BE2200F01003 than that was a board revision by Sega. The two chips are the 7404 is a hex inverter, and the 7474 is a dual flipflop. The little PCB is a fix for an error they didn't catch before going into production Still trying to get more info on that revision if you need it.http://sega.wikia.com/wiki/Sega_Mega_Dri... Good Luck with your Sega CD..Here is more info on the console.

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I know this was answered 5 years ago, but the Sega CD 1 unit has no need for a mod chip. If you burn a copy of any game you have onto a black CD and try and load it up in the Game system, will work without a hick-up! It's a great way to insure that you preserve your games to last another 25 years. Alright, now let's go and play some "Cobra Command"!

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Nick will be eternally grateful.
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