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Making SEGA Genesis cartridges
pbj:
Some additional unexpected progress today. My EPROM eraser and empty ZIF sockets arrived.
Here's what we're starting with, original ROM has already been removed.
Capacitors moved to the back of the cartridge and 6 pins carefully removed from the ZIF socket. You can remove those two screws and pry it open and then remove the pins. Or clip them I guess.
Soldered in place. Went ahead and added a new battery (noticed it's flipped upside down because of the leg lengths)
And here we are successfully testing the old ROM again.
This cartridge will allow me to test burned chips without having to solder 42 pins.
--- Quote from: Vigo on March 18, 2022, 03:00:39 pm ---Gonna do any homebrew? A few games looked really good and have the roms out there for free like tanglewood.
--- End quote ---
Yep! Cave Story for sure and a few others.
:cheers:
Vigo:
Nice! I love this project. I gave my genesis away recently, but found one sitting in the bottom of a big box of Billy Big mouth Basses I bought in a local auction. I might have to clean it out and get it working.
TacoTownCharlie:
--- Quote from: Vigo on March 18, 2022, 04:16:40 pm ---I gave my genesis away recently, but found one sitting in the bottom of a big box of Billy Big mouth Basses I bought in a local auction.
--- End quote ---
Now that is the most BYOAC sentence I’ve read in a long time.
TTC
Sent from my iPad using Tapatalk
Nephasth:
Very cool... I'm out of my element, but will you be able to put Sega Channel exclusive games on carts?
pbj:
Stuff like Alien Soldier and Wiley Wars - Yes. They're just the regular ROMs, but weren't released in the US in cart form.
Stuff like Garfield with the extra levels - No. Lost to time.
If there's some good one I'm overlooking, I'd love to hear about it. Sonic Eraser maybe..?
Phantasy Star 4 has turned out to be a particularly vexing problem. It's a 3MB ROM split across two 2MB chips. There's only a handful of games with that configuration, most of them sell for decent money, and most of them are good games you really wouldn't want to convert. And only a few of those have save support. Thankfully most of those are sports games nobody wants now. Out of my ~90 cartridges, I own exactly one that is compatible. The competition is a $10 shipped multicart from China with Phantasy 2, 3, and 4 already on it. I'm not crazy about soldering 84 pins without checking the ROMs first, so that means making another donor cart. Which means buying more junk games. :lol
Pic for reference:
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