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OEM BASIC Stamp 2 module — Parallax Forums

OEM BASIC Stamp 2 module

T&E EngineerT&E Engineer Posts: 1,396
edited 2005-11-04 18:41 in BASIC Stamp
I see that Parallax has these on sale right not for $30.

It also looks like they have an external 24LC32 EEPROM. Is it possible to put in a bigger EEPROM. Does Parallax sell anything that would work?

I take it that these are the same as a BS2 chip (just made for breadboarding).

Thanks,

Timothy Gilmore

Comments

  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2005-11-04 18:33
    Tim,

    ·· You cannot increase the EEPROM or RAM (Variable Space) on the BASIC Stamps by putting in a larger chip.· You can add external EEPROM and RAM which can be used for data, but not program/variable storage.

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    Chris Savage
    Parallax Tech Support
    csavage@parallax.com
  • allanlane5allanlane5 Posts: 3,815
    edited 2005-11-04 18:40
    Yup, the problem is that the BS2 run-time, which is programmed into the PIC, by the way, only knows how to deal with a 2K eeprom space. So, while you in theory could put a larger eeprom in, the run-time environment wouldn't know what to do with it. And you can't change the run-time environment. First of all, that's Parallax proprietary, that's what they make their money with, which pays for all the cool stuff they do.

    Secondly, it's very non-trivial to develop such a run-time environment and retain the reliability the BS2 currently has.

    The 'larger' BS2 variants do use a larger eeprom, but then treat it as multiple 2K byte 'banks'.
  • T&E EngineerT&E Engineer Posts: 1,396
    edited 2005-11-04 18:41
    No Problem. Thanks to all!
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