Re: DIY Copier Website

> By the way how did you make your actual cartridge edge? Just wondering for when I'm prototyping my design before I make a PCB for it.

For the SNES, I took an old PC ISA card and soldered the wires directly onto the connector pins. For the Genesis, I used a normal game cartridge and did the same with it after removing the ROM (of course I chose the crappiest game I have ;).

> Also I've determined all the information needed for battery saved games on the Genesis of any size now. Turns out it uses the previously unknown pin B31. I need to write up a better document though than the one I have currently.

AFAIK, the battery backed RAM is paged in and out by writing a 1 or 0 to an address which I don't remember right now. Pretty simple, actually. And it seems that really all games which use RAM write to this address, even though they're smaller than 32MBit and therefore wouldn't need to do so.

> Though your SNES Hi-ROM mapper is interesting since I was unsure how that works. I hope you don't mind if I use your design for the basis of mine.

Sure, go ahead, but if you release your design, don't forget to mention where your inspiration came from :)

/chn

• Re: DIY Copier Website Cryect 11:12:19 01/01/02 (2) responses
  • Re: DIY Copier Website Neviksti 11:33:12 01/02/02 (1) response
    • Re: DIY Copier Website chn 06:22:36 01/04/02 (0) responses

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Message	> Hi, > > By the way how did you make your actual cartridge edge? Just wondering for when I'm prototyping my design before I make a PCB for it. > For the SNES, I took an old PC ISA card and soldered the wires directly onto the connector pins. For the Genesis, I used a normal game cartridge and did the same with it after removing the ROM (of course I chose the crappiest game I have ;). > > Also I've determined all the information needed for battery saved games on the Genesis of any size now. Turns out it uses the previously unknown pin B31. I need to write up a better document though than the one I have currently. > AFAIK, the battery backed RAM is paged in and out by writing a 1 or 0 to an address which I don't remember right now. Pretty simple, actually. And it seems that really all games which use RAM write to this address, even though they're smaller than 32MBit and therefore wouldn't need to do so. > > Though your SNES Hi-ROM mapper is interesting since I was unsure how that works. I hope you don't mind if I use your design for the basis of mine. > Sure, go ahead, but if you release your design, don't forget to mention where your inspiration came from :) > /chn
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