Macintosh Plus ROM Chips in Macintosh 512K

Discussion in 'Apple Collectors' started by mikemike690, Feb 8, 2016.

  1. mikemike690 macrumors regular

    mikemike690

    Joined:
    Apr 7, 2012
    Location:
    New Zealand
    #1
    I've just brought a Macintosh Plus and soon to buy Macintosh 512K, the Plus has corrosion from battery leakage but I'm pretty sure the ROM chips will still be good hopefully, am I able to unsolder these Plus chips and solder them into my 512K? Thanks.
     
  2. MacTech68 macrumors 68000

    MacTech68

    Joined:
    Mar 16, 2008
    Location:
    Australia, Perth
    #2
    Yes, indeed you can, but you should really swap them as a pair. There are two ROMs (HI and LOW), and the revisions of each one need to match a certain pairing.

    However, to find out which ROM is bad, you should be able to swap one at a time.

    It will create other odd errors if you have an unmatched pairing as a permanent fix.
     

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