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Barcode Scanner ROM Dump

Discussion in 'General Electronics' started by Brian Bulson, Jul 25, 2003.

  1. Brian Bulson

    Brian Bulson Guest

    Hello, I am trying to dump the ROM of a barcode scanner that has a
    decoding algorithm most likely located on an EPROM inside the scanner.
    I would like to try and dump the ROM to my computer to more closely
    examine the decoding algorithm. Are there any resources that might
    explain how to do this or what hardware I would need? I figure I
    might have to tap into the internal bus and somehow. Any help would
    be greatly appreciated.

    Thanks,
    Brian Bulson
     
  2. Wade Hassler

    Wade Hassler Guest

    You need
    1 A disassembler program for the microprocessor used. The Net knows.
    2 Some knowledge of uP's operation (esp. vector addresses)
    3 Some knowledge of the scanner's hardware
    4 Lotsa luck & lotsa time

    Additionally, the ROM must be *accessible* -- this might be tricky if
    the processor is 'secure.'

    Again, good luck. It's an interesting task, but you may be overwhelmed
    by details: do you have a friend who knows even a little about the
    scanner? If so, talk to him/her.
    Wade Hassler
     
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