27C322 to SNES Rom adapter

Name: 27C322 to SNES Rom adapter
SKU: 9786
Price: 1.60 USD
Availability: InStock
Rating: 4.81 (18 reviews)

(18 Reviews)

Adapter to be used to replace SNES roms with 27C322

Designed by mrTentacle in Sweden

2018-07-20T10:19:40.116Z-IMG_20180720_115025_crop.jpg

2017-06-04T21:17:30.195Z-IMG_20170604_215401.jpg

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2017-06-04T21:17:30.195Z-IMG_20170529_170858.jpg

2017-06-04T21:17:30.195Z-IMG_20170602_223459.jpg

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Adapter to be used to replace SNES roms with 27C322

To avoid shorting, these new boards have exposed pads on the bottom, put tape on these if your donor board have any exposed pads What is it? This listing is for one adapter board that takes 27C322 a…

To avoid shorting, these new boards have exposed pads on the bottom, put tape on these if your donor board have any exposed pads

What is it?

This listing is for one adapter board that takes 27C322 and makes it compatible with standard 36pin SNES ROM pinout. Works fine with both LoROM and HiRom games on both my game pcbs and the originals.

Why did you make it?

Because I couldn't find any to buy.

Stuff you need

Snes cartridge PCB with space for a 36pin rom (My own works best, of course!) On some boards a few components needs to be moved, the adapter is as small as it can be
1x Preprogrammed 27c322 chip, 27c160 chips are supported, see page 7 of documentation
2x 74 257 SOIC
2x 18 single row header pins
Patience when assembling, its tricky, the total clearance inside a standard snes cartridge shell is only 6mm!

Disclaimer

The assembly is difficult, please read the instructions!

Extra link to the instructions

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Quantity	Price
1-9	$1.60
10-49	$1.50
50+	$1.40

Review Breakdown

Average Ratings

Product: (4.78)

Documentation: (4.78)

Shipping: (4.78)

Communication: (4.89)

Jose | Nov. 25, 2021

Excelentes placas de circuito impreso

Muy buena calidad de placas de circuito impreso, vendedor muy atento y servicial, muy contento con los resultados obtenidos, por fin me he podido fabricar algunos títulos de culto, que deseaba tener y por los que se pagan fortunas en las paginas de subastas.

Derek | July 2, 2020

27C322 adapter is quality!

Great adapter, the PCB is quality and very useful. Also, the seller has great communication! I will definitely make another purchase

Lucas | June 18, 2020

Best Adapter You Can Buy!

These are very high quality adapters. Boards are thin and fit perfectly inside the cart. Thanks so much for making these adapters :)

Igor | Jan. 27, 2020

Awesome

Very nice boards. Thin. Precise. Fit well.
Shipped within the hour. Excellent service.
Recommend

Pablo | Sept. 28, 2019

Great experience!

Superb quality adapters: ✓
Great communication: ✓
Fast shipping and reasonable shipping fees: ✓

Fantastic support from Martin, I definitely would buy again!!!

Julien | April 30, 2019

Nice work !

Really great work ! Easy to use. Work perfectly with a lorom card and a 32MB ROM.
PCB are really flat.
Thanks a lot

Ruslan | April 22, 2019

27C322 to SNES Rom adapter

Hello. Thank you very much. adepter received, reached quickly. Today already one used, works perfectly.

Sergey | Oct. 10, 2018

ordered 27C322 to SNES Rom adapter.Everything is great.

Everything is great. Thanks a lot, this is a very good product.I hope for further cooperation with you.

Sean | Aug. 10, 2018

Adapter board

These adapter boards are great. As is described, it takes a bit of finesse to get these installed neatly but once they are they’re perfect.

Dan | April 21, 2018

Great Adapter

These boards work well and are fairly easy to work with. Thanks for the great solution for the 27c322 chip!

Only thing that I think could be improved is the pin hole size for the 27c322. There’s quite a bit of space and the solder can flow through the hole to the other side too easily.

Jessica | April 8, 2018

Great product For making games

I have used this product to make three translated games with these PCBs so far, they are easy to assemble and function perfectly. So much better to use than Tsop adapters currently floating around.
I was so pleased with them I have placed a second order to do more games. and will likely do so again

Tassio | March 28, 2018

Eucomprei 18 placas adaptadoras para 27c322 faz 4 meses e at

Eu comprei 18 placas adaptadoras para 27c322 faz 4 meses e até agora não chegou, não existe nenhum rastreamento do pacote alguem pode me ajudar de alguma forma.

Response from mrTentacle | March 28, 2018

Please send me your address and order number, I will help you!

Matt | March 28, 2018

Great product!

I love how small these are, and how clean they make installs. Personally, I had no difficulty assembling the parts, and my first game with the adapter worked perfectly. Will likely buy more!

2 nitpicky design thoughts:
1.) Would prefer the 5V and GND rails to be thicker than the traces for the address and data lines
2.) Feel like the 74-series chips should have filter caps on them.

Check out my results: https://www.instagram.com/p/Bg1ImGYAM9f/?taken-by=gudbix

P.S. I live in Virginia, and it took 20 days to arrive, but it's worth the wait.

Response from mrTentacle | March 28, 2018

Thanks for taking the time to write and to leave feedback, I will definitely take this into account when I make the next revision!

Alex | March 23, 2018

Difficult to assemble, but well worth the effort

AM29F032B chips are a pain in the butt to solder, 27C322 always seemed like a good idea to me, but it was a mess to get the wiring right, especially with the required 74HC257x2 chips. Low and behold, Mrtentacle apparently thought so too, and made these adapter boards, which puts all the required hardware on one board. While these boards are a very tight fit and take a while to assemble, they make a clean, professional looking product that opens up the 27C322 chip for more projects. Highly recommended!

Jaime | Jan. 31, 2018

Great product and solution for 27C322

Great product, communication, and customer service. I received my items 9 days after it shipped! Looking to get more products from Mr Tentacle!

Joe | Jan. 30, 2018

Great Idea, Design a bit rough

Straight to the point, I love the idea of a 27c322 adapter for your SNES donors. That way, you aren't spending a chunk of change for TSOP to DIP adapters, or using 3.3v flash chips. My biggest issue is the design. You have to do so much prep to get it to fit as low to the board as possible, and even then it will barely fit in a US cart. Personally, I would say it would be better to make the 27c322 side surface mount, instead of Through-Hole like the SNES Mask ROM side. But overall, love the idea but the design needs a bit more work.

Response from mrTentacle | Feb. 1, 2018

I will definitely take this into account, thank you for your feedback!

Darlei | Nov. 4, 2017

nice price nice item

Good seller good comunication
good seller good comunication
good seller good comunication
good seller good comunication

Response from mrTentacle | Nov. 30, 2017

Thank you! :)

Dave | Sept. 16, 2017

Worked as indicated

Works perfectly as described, it definitely is a tight fit in the case.

Note *only* works on 27C322, not other similar EPROMs (eg 27C160s), which it never suggested it would but just FYI

Response from mrTentacle | Jan. 24, 2018

Thanks for taking the time to write a review!
I will definitely be looking into 27c160. *Fixed!*

EDIT, I think the problem is pin 32 of the 27c160 chip, it should be connected to GND instead of the hole in the adapter board, bend the leg up and connect to ground. Should work, haven't tried as I dont have any of those on hand.

EDIT 2, no not GND connect to VCC, sorry I must be tired.. :)

EDIT 3, The silkscreen and documentation have been updated with instruction for how to use 27C160 chips with the adapter

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