Ken Nakata wrote:
> 
> On Thu, 13 Nov 1997 20:28:50 +0100,
> Hauke Fath <hauke@Espresso.Rhein-Neckar.DE> wrote:
> > 
> > Well, the main reason why IDE exists at all is that you get along with a
> > parallel interface (something like two 74HC245s) and a few control lines on
> 
> Hm, I like 645's better ;-)
> 
> > the host side. No need for "industry standard" parts here.
> 
> No, what I meant by "industry standard" parts were the drives.  Since
> there's virtually no room for creativity in the host side of interface
> as far as the vanilla IDE is concerned, I thought it's got to be
> something on the drive itself if Apple had decided to deviate from the
> ANSI standard.

According to the developer notes for the LC/Quadra 630, Apple's IDE
interface follows a "subset" of the ANSI standard, whatever that means.

> > Where the ports are mapped and how they interrupt is more a question of
> > system integration than of the actual IDE "hardware".
> 
> That's exactly my point.

Unfortunately, the developer notes are a little sparse on this one :-(

Later.

-- 
Colin Wood                                 cwood@ichips.intel.com
Component Design Engineer - MD6                 Intel Corporation
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I speak only on my own behalf, not for my employer.