Re: Genesis Flash Cart (homemade)

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This message was posted by The Dumper, posted on December 04, 2001 at 23:38:41 coming from 209.204.139
This message is a reply to Genesis Flash Cart (homemade) posted from John H posted at December 04, 2001 at 20:47:09
> 'lo all, I recently began working on a genesis flash cart built from an old cartridge PCB and two flash chips I got, but I've invested a lot of time into troubleshooting it and it still doesnt seem to be working. As far as I know it's wired up properly, but is there anyone out there who has done this type of thing that could offer a pointer or two?

What flash chips and what cartridge did you use. What was the configuration of the mask ROMs on the cart before you started.

Where did you find the flash chips? To my knowledge you can can count on the fingers of one hand (maybe using one finger) the number of flash chips that match the DIP pinout in most Genesis carts and I don't know anywhere in the world you can get them today and I'm pretty plugged in. I'd be interested to know where to get these chips.

I presume you added sockets for the flash chips and the flash chips are the same pinouts as those of the mask ROMs previously on the cart. If so you should plug the mask ROMs into the sockets to test the cart and make sure it's still working OK after you installed the sockets. If it isn't then you have a problem with your socket installation. If you can verify the cart this way and your flash chips are the same pinout you just need to split the ROM onto the flash chips properly, program and install them and you should be good to go. As a next verification step program the same game that was in the mask ROMs into the flash chips and install them. It should work, if it doesn't something is wrong with your splitting, programming, or your flash chips.

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Re: Genesis Flash Cart (homemade) John 02:24:58 12/05/01 (0) responses

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Message	> > 'lo all, I recently began working on a genesis flash cart built from an old cartridge PCB and two flash chips I got, but I've invested a lot of time into troubleshooting it and it still doesnt seem to be working. As far as I know it's wired up properly, but is there anyone out there who has done this type of thing that could offer a pointer or two? > What flash chips and what cartridge did you use. What was the configuration of the mask ROMs on the cart before you started. > Where did you find the flash chips? To my knowledge you can can count on the fingers of one hand (maybe using one finger) the number of flash chips that match the DIP pinout in most Genesis carts and I don't know anywhere in the world you can get them today and I'm pretty plugged in. I'd be interested to know where to get these chips. > I presume you added sockets for the flash chips and the flash chips are the same pinouts as those of the mask ROMs previously on the cart. If so you should plug the mask ROMs into the sockets to test the cart and make sure it's still working OK after you installed the sockets. If it isn't then you have a problem with your socket installation. If you can verify the cart this way and your flash chips are the same pinout you just need to split the ROM onto the flash chips properly, program and install them and you should be good to go. As a next verification step program the same game that was in the mask ROMs into the flash chips and install them. It should work, if it doesn't something is wrong with your splitting, programming, or your flash chips.
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