• 32kB x 8 bit static RAM expansion module for TI-74 BASICALC or TI-9

    From Tom Lake@21:1/5 to Lorenz Born on Fri Mar 6 13:47:11 2020
    On Thursday, March 5, 2020 at 1:53:43 PM UTC-5, Lorenz Born wrote:
    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--

    Remember that adding a RAM cartridge won't give you more program steps or memory registers. It only expands the file space where you store programs.

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