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  • Re: MMC/SD for older devices

    From Paul Stewart@3:633/10 to All on Monday, December 29, 2025 16:25:25
    In message <Cne*mDdoA@news.chiark.greenend.org.uk>
    Theo <theom+news@chiark.greenend.org.uk> wrote:

    Paul Stewart <paulstewart@phawfaux.co.uk> wrote:
    In message <10bk4b1$jtid$1@druck.eternal-september.org>
    druck <news@druck.org.uk> wrote:

    On 30/09/2025 12:45, Theo wrote:
    Paul Stewart <phorefaux@gmail.com> wrote:
    Currently I have a MMC adaptor connected to the 2nd interface

    [snip]

    If you adapter is really for MMC rather than SD (from the megabytes not >>>> gigabytes era) then it might not support SD at all, or not SDHC, or some >>>> arbitrary size limit. Only thing is to try it.

    I suspect it is an IDE to Compact Flash adapter incorrectly described as >>> MMC.

    Quite right!

    Ah, that changes things! In that case I'd be looking at an IDE to SATA adapter plus a SATA SSD.

    The A9home's IDE implementation was designed by Simtec, and I think the Simtec IDE ports (Unipod etc) were designed to a more modern spec and had better luck with adapters than the Acorn motherboard ones on Risc PCs.

    So I went with an IDE to SD card adaptor from Amazon (https://www.amazon.co.uk/dp/B07B66QJHK?ref=ppx_yo2ov_dt_b_fed_asin_title
    ). I tried an M.2 to IDE adaptor, but that did not work :(

    The SD adaptor appears to be working fine. Have it attached to the top interface on the motherboard. The bottom interface where the old HDD was installed (many moons ago) no longer seems to recognise anything. But
    can't say I have used it for years as it never recognised my CF adaptor anyway, but the top one always did!


    --
    Paul Stewart
    Sent from A9home running RISC OS 4.42

    --- PyGate Linux v1.5.2
    * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)