(Topic ID: 168537)

Problems Updating ROM (Getaway HS:2)


By wxforecaster

2 years ago



Topic Stats

  • 5 posts
  • 4 Pinsiders participating
  • Latest reply 2 years ago by PinKopf
  • No one calls this topic a favorite

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    #1 2 years ago

    So yesterday I picked up a Getaway, which had the L1 ROM. I've got GQX-4x4 EPROM burner and a UV eraser, which I used to successfully repair a few arcade boards.

    It's a Texas Instruments 27C040 chip. What am I doing wrong? I erased the chip for 60 minutes, verified it as blank (FF filled). Loaded the L-5 ROM and went to write it. It fails with a buffer mismatch on the very first byte 0x0000000. Tried the same process again with an L2 ROM from IPDB, and the same thing.

    Do I have a bad EPROM chip or am I doing something wrong.

    Thanks in advance!

    #2 2 years ago

    60 minutes might have been excessive.
    It is possible to "over erase" a UVEPROM.
    --
    Chris Hibler

    #3 2 years ago

    I'm voting for a bad chip. Try another.

    #4 2 years ago

    Sigh. Wish i had another. I'd still have a working game. Only a total n00b would use the original to update.

    Time to hit the ebay or ask the local pinball gang if anyone has one.

    #5 2 years ago

    I know you have the burner, but I bought an L2 rom from http://hobbyroms.com/pinball.html for like $10-$15. I'm sure you could probably buy some extra blanks too at the same time to save on shipping...

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