SpritesMind.Net

Gerry_MAN · Newbie Joined: 15 Dec 2010 Posts: 4 Location: Canada

Hi Folks,

To fill you all in, I have been working on a Flash cartridge for the SEGA Game Gear (a 1Mbyte version) for some time now.
I got temporarily distracted by working on my 512Kb version.

I finally landed a working design for this one and so I compiled together a 5 Part instructional video along with a 26 Page
"Step by Step" guide in PDF format for you all to follow. I have also included a Full schematic design and a PCB layout
of my GIGANTIC Prototype PCB that I used during the development process.

Anyhow, there's a few ways of building this unit and I I'll leave it up to you to choose.
Hopefully the info I've supplied here will help you all to build your own 512kb Flash cart.

I'm going to continue to work on the 1Mbyte version and hopefully we can all get this sucker up and running soon.

You can access all the the documentation and Links from my Website at the link below:

http://www.digital-circuitry.com/GameGear.htm
(Site is under constructions so please excuse the crudity of the current layout)

Talk to you all later,
-Gerry

KanedaFr · Administrateur Joined: 29 Aug 2006 Posts: 635

Congrats!
thanks for the time you spent to make the tutorial (PDF & video) !

TmEE co.(TM) · Posted: Wed Dec 15, 2010 10:15 am Post subject:

I'd still like to see too something that uses self built mapper Razz

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Gerry_MAN · Newbie Joined: 15 Dec 2010 Posts: 4 Location: Canada

TmEE co.(TM) · Posted: Wed Dec 15, 2010 6:53 pm Post subject:

I once built a mapper out of 6 logic chips, but I have not yet tested it... I built it I think 2 years ago...

http://www.fileden.com/files/2008/4/21/1876835/SMSmapperFront.jpg
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Gerry_MAN · Newbie Joined: 15 Dec 2010 Posts: 4 Location: Canada

Hey TmEE co.(TM),

This is fantastic!!

Do you have the schematic?

I'd love to see your work behind the design.

Were you emulating a particular SEGA mapper? or was this something completely your own? I guess if it was, the code being used with it would also have to be written specifically for it.

Again very cool.

I hope you have the schematic?

-Gerry

TmEE co.(TM) · Posted: Thu Dec 16, 2010 12:56 pm Post subject:

This is standard Sega mapper with 2 banks (1 and 2) and no SRAM, it should work with about 80...90% of the games.
I have the schematic somewhere, but it might take a while before I find it... I recently moved and all my papers etc. are still in boxes :/
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Gerry_MAN · Newbie Joined: 15 Dec 2010 Posts: 4 Location: Canada

Hey again Folks,

Well, just over the March break I finally figured out the interface required to connect a 1MegaByte Flash Memory chip to the Game Gear. I used the SEGA 315-5912 Mapper IC that is found in Game Gear Games like "Garfield" or "Sonic Blast".

So a 1 MegaByte Flash cartridge for the SEGA Game Gear is now possible.
Time permitting I will put together another instructional video and tutorial for everyone to follow, but this will have to wait until I finish my College exams.

You can check out the details here in my Website:

http://www.digital-circuitry.com/GameGear.htm

You can also see the details on my devoted Flash cart page from the SMSPower website:
http://www.smspower.org/Development/FlashCartridgeProjectsByGerryOBrien

Talk to you all later,
-Gerry