Re: Commodore PLC TIB DD-001 / Drive 2001

From: Mia Magnusson <mia_at_plea.se>
Date: Fri, 25 May 2018 17:08:27 +0200
Message-ID: <20180525170827.00004522@plea.se>
Den Thu, 24 May 2018 06:02:42 +0000 skrev "Baltissen, GJPAA (Ruud)"
<ruud.baltissen@apg.nl>:
> Hallo smf,
> 
> 
> > Technically CF is 16 bit, although some cards support switching to
> > 8 bit transfers. I don't know how well that works in practise.
> >
> > The XTIDE adapters work round it by ...
> 
> Ah, you are familiar with XTIDE and therefore the XTIDE Universal
> BIOS (UB). There are these cards for CF cards:
> https://www.lo-tech.co.uk/wiki/XT-CF-lite_rev.2 and
> http://www.malinov.com/Home/sergeys-projects/xt-cf-lite . These cards
> are 8-bits only. It uses the CF's feature that it can work with 8
> bits transfers and it is supported by UB. I have an XT with an AT
> FDD/HDD card and a 1 GB CF card connected to the HDD header. Data
> bits 8..15 are not used at all. In fact impossible to use because the
> connector is missing.
> 
> Anyway, so far of the over twenty CF cards I plugged into this
> machine, only one was not recognized by UB although it worked fine as
> a HDD replacement in a IBM AT.
 
Afaik there are also some version of the XTIDE Universal Bios that can
use 16-bit IDE disks and 16-bit ISA controllers on an 8-bit ISA bus by
just throwing half of the capacity away.

Sorry for delving in this off-topic direction, but I would had bought
one of those cards a long time ago if only they did combine more
functionality on the same card. My old "portable" 8088 machine only has
two ISA slots (with only one visible on the outside of the computer),
and with only 128k ram on board I'd really like a memory expansion, a
hard disk interface and a network card. Maybe I'll just end up
soldering some sram onto a multi I/O card (and put the XTIDE universal
bios in the boot rom socket of the network card)...


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Received on 2018-05-25 18:01:31

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