8-bit IDE

From: Richard Erlacher <edick_at_idcomm.com>
Date: Sun Apr 16 18:13:17 2000

plz see comments below.

----- Original Message -----
From: allisonp <allisonp_at_world.std.com>
To: <classiccmp_at_classiccmp.org>
Sent: Sunday, April 16, 2000 9:59 AM
Subject: Re: 8-bit IDE

> >No, I haven't heard of any 8-bit IDE models since the very ancient
> >ST___X drives. But I gotta ask, why even bother looking for them, when
> I happen to have a few WD and ST series ones but they are native ide-8
> and no bit change for 16bit. 8bit IDE is true oddball and I really doubt
> there
> was much in the way of adpotion.
> doing 8bit conversion takes a bit of logic and the direct 8bit IDE looks
> appealing until you try to use them... They didn't standardize! I gave up
> on them.

As it happens, the committee did standardize on the one mode bit that makes
the interface an 8-bitter. How extensively that was adhered to remains to
be seen, I guess.

The early COMPAQ drives were pretty consistent in their 8-bit data width.
I'm not looking to manufacture these things in quantity. I have a couple of
dozen bare S-100 boards which have one input and one output port. I'm aware
of what the circuit is, though I'd never have done things the way the
board's makers did it, and there's mostly bare board for whatever one can do
with that. The "thin" notebook drives will handily attach to the component
side of the board, consistently with a connector scheme I've hacked from a
standard IDE-to-notebook drive adapter. This board will be used for this
adapter, and for the "hard-card" that I want to make up, only because I know
I'll only build 2 or 3 of the things. The interface will require only that
the interconnections be provided. This means wire and a connector will
provide a generic 8-bit IDE interface for the S-100.

Received on Sun Apr 16 2000 - 18:13:17 BST

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