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Re: MMC/SD for older devices

From Paul Stewart <phorefaux@gmail.com>
Newsgroups comp.sys.acorn.hardware
Subject Re: MMC/SD for older devices
Date 2025-10-04 21:38 +0100
Organization A noiseless patient Spider
Message-ID <6fa2b1665c.Paul@phawfaux.co.uk> (permalink)
References <1f6859645c.Paul@phorefaux> <Cne*7cVnA@news.chiark.greenend.org.uk> <10bk4b1$jtid$1@druck.eternal-september.org> <047d32665c.Paul@phawfaux.co.uk> <Cne*mDdoA@news.chiark.greenend.org.uk>

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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.

I'll check them out on Amazon.  If anyone is already using on with the 
A9home, please drop me a link to it.

> 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.

Over the years I have the IDE interace on the A9home to be be quite picky 
over what it will work with.  Even down to which interface it will work 
on!  For example my current CF adaptor will not work on the interface 
underneath, but works fine via a cable on the top interface!

Regards
-- 
Paul Stewart

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Thread

MMC/SD for older devices Paul Stewart <phorefaux@gmail.com> - 2025-09-30 08:22 +0100
  Re: MMC/SD for older devices Theo <theom+news@chiark.greenend.org.uk> - 2025-09-30 12:45 +0100
    Re: MMC/SD for older devices Stuart <Spambin@argonet.co.uk> - 2025-09-30 21:30 +0000
    Re: MMC/SD for older devices druck <news@druck.org.uk> - 2025-10-01 21:52 +0100
      Re: MMC/SD for older devices Paul Stewart <paulstewart@phawfaux.co.uk> - 2025-10-03 22:29 +0100
        Re: MMC/SD for older devices Theo <theom+news@chiark.greenend.org.uk> - 2025-10-04 09:39 +0100
          Re: MMC/SD for older devices Paul Stewart <phorefaux@gmail.com> - 2025-10-04 21:38 +0100
            Re: MMC/SD for older devices Theo <theom+news@chiark.greenend.org.uk> - 2025-10-05 11:09 +0100
          Re: MMC/SD for older devices Paul Stewart <phorefaux@gmail.com> - 2025-12-29 16:25 +0000

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