(Topic ID: 210110)

Sys 11 Roms


By volkdrive

2 years ago



Topic Stats

  • 3 posts
  • 2 Pinsiders participating
  • Latest reply 2 years ago by volkdrive
  • Topic is favorited by 1 Pinsider

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#1 2 years ago

Looking to update my roms by burning my own, trying to navigate Digikey website to find the 28 pin Eproms is killing me....
Anyone able to help out with some part numbers?
Looking to burn roms for sys 11A High Speed, and 11B Taxi currently.

Thank you

#2 2 years ago

Try searching for 27c instead of just 27. Eg, for high speed it looks like it needs a 27256, which digikey doesn't carry. They do have some 27c256 though: https://www.digikey.com/product-detail/en/microchip-technology/AT27C256R-70PU/AT27C256R-70PU-ND/1008551

However note that these aren't EPROMS, just PROMs. There's no window for erasing them, so you can only burn them once. I've never been able to find EPROMs on digikey, so I usually end up buying them from Marco or china

#3 2 years ago

Thanks, if I can’t erase it’s ok at 1.50 each.

Thanks for the link too

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