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Replacing A Palm's ROM With An EEPROM?

Posted by Cliff on from the hacking-your-handheld dept.

^me^ asks: "I have a Palm IIIe and an EEPROM burner, plus numerous EEPROMs and I can get them manufactured. The Palm IIIe uses a ROM to store system software, and I'd like to upgrade it. Is there any way if I map the pin layouts or something that I can replace the ROM with an EEPROM?" Could a Palm's internal memory space be increased as well via a similar hack? Palm VII's could really use the extra space.

1 of 6 comments (clear)

  1. Why bother? by Bud · · Score: 3

    I will be very surprised if there are no pin-for-pin compatible (E)EPROMs available on the market. And I'm quite sure the IIIe will run OS 3.1, 3.3 and 3.5. I've personally installed 3.5 on a PP Personal with a 2M upgrade and I don't think that the more modern IIIe will have any bigger problems.

    Peter Stroebel's site at http://www.pstec.de/ppp/ contains lots of valuable hardware information.

    However, I suspect that you will destroy your IIIe in the process. You *need* good soldering tools and the soldering should preferably be done by a reliable soldering wizard. My recommendation is that you save your money and go buy a better Palm.

    --Bud