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  • 32kB x 8 bit static RAM expansion module for TI-74 BASICALC or TI-95 PROCALC

    From Lorenz Born@lorenz.born@gmail.com to comp.sys.ti,comp.sys.handhelds on Thu Mar 5 19:53:42 2020
    From Newsgroup: comp.sys.ti

    Dear all,

    I had the unique opportunity to buy a pocket TI-95 PROCALC calculator
    together with a Math Statistics, a Chemical Engineering library module,
    a PC-324 printer and a PC interface for around $40 here in Switzerland.

    Now I'm considering how the internal memory of only 8kByte could be
    expanded with a RAM memory module (RAM cartridge) with 32 kByte. In my opinion, this should work, since a ROM expansion (ROM cartridge) with a
    memory size of 32 kByte was also available for the TI-95 PROCALC calculator.

    What do you think about that? Has anyone worked with such a RAM
    extension before? Probably built by yourself. Of course, I would have to develop it first. I imagine using a SAMSUNG KM62256CLG-7L (see https://app.ultralibrarian.com/details/Samsung/KM62256CLG-7L?uid=93ce5ab184e94c09)
    32k x 8 bit low power CMOS static RAM (70ns).

    Would anyone other than me be interested in such a 32 kByte RAM
    cartridge? Thanks in advance for any help or comments.

    Best regards,
    Lorenz
    --
    Lorenz Born
    lorenz<dot>born<at>gmail<dot>com
    The computer gets faster! --Moore--
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