Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!usc!brutus.cs.uiuc.edu!apple!well!farren
From: farren@well.UUCP (Mike Farren)
Newsgroups: comp.sys.amiga
Subject: Re: Non-Zorro slots in the Amiga 3000
Keywords: 3000 slots
Message-ID: <15126@well.UUCP>
Date: 20 Dec 89 09:08:00 GMT
References: <5906@ubc-cs.UUCP> <3751@convex.UUCP> <5936@ubc-cs.UUCP> <3854@convex.UUCP> <14997@well.UUCP> <557@sagpd1.UUCP>
Reply-To: farren@well.UUCP (Mike Farren)
Distribution: na
Organization: Whole Earth 'Lectronic Link, Sausalito, CA
Lines: 19

In article <557@sagpd1.UUCP> monty@sagpd1.UUCP (Monty Saine) writes:
>    From what I have seen of the EISA design used by big blue there are
>alignment ridges that prevent the old style boards from contacting the extra
>contacts down deeper. These samw ridges and the edges of the overall connector
>should prevent the kind of problem you fear. The killer is going to be the
>cost of these kind of "custom" connectors. Remember trying to finds a DB-23?

The last time I saw the EISA spec (admittedly, only a quick look), I saw
one, and only one, alignment device - a key which fit into a slot approximately
halfway down the card-edge on an EISA card, and which would, supposedly,
block a non-EISA card from being inserted fully.

By the way - ascribing this to "big blue" is one of the funniest bits
of total mistake I've seen in this group for months.  Big Blue (IBM to you),
of course, promotes the MicroChannel bus, not EISA - a bus design brought
out solely to stick it to "big blue".  (Fat chance, IMHO, but we'll see...)

-- 
Mike Farren 				     farren@well.sf.ca.usa