Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!emory!hubcap!ncrcae!ncr-sd!se-sd!cns!dltaylor
From: dltaylor@cns.SanDiego.NCR.COM (Dan Taylor)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: HARDWARE HACK:2630 accellerator card in a Zorro II slot
Message-ID: <960@cns.SanDiego.NCR.COM>
Date: 15 May 91 21:19:12 GMT
References: <72302@microsoft.UUCP>
Organization: NCR Corp. SE-San Diego
Lines: 35

In <72302@microsoft.UUCP> tom@microsoft.UUCP (Tom MCCONNELL) writes:

>But I DO have a fully compliant Zorro II slot.

>Somewhere I heard about someone hacking a 2630 onto their expansion
>port, which is essentially a different form of the Zorro slot, right?

A ZorroII slot IS NOT THE SAME as the processor slot.  In fact, the
processor slot is more like a gender reversed version of the connector
on the side of your A1000.

To the best of my knowledge, what you need to do is create a small
box that fits BETWEEN your A1000 and the Expansion Technologies.  This
is so any DMA devices there will still work, after the A2630 takes over
from the A1000.  You will need a female 86-pin connector (0.125" centers)
for the A1000, another for the A2630, and a MALE connector to extend
to the ET box.

There is enough power in the A1000 to run EITHER an A2630, OR the ET box,
but NOT both.  Some ET boxes had supplies, some didn't; I think it was
an add-on.  Make sure the ET box is set up for it's own power supply.

The A1000 pinouts are almost exactly 1 to 1 with the A2630 (I don't
have the schematics here, but I'm going to build my own box like this),
and I can't think of any conflicts, either power or signal.  If you
really plan to do this, get the docs from C=.

DISCLAIMER:  This is not something to try, unless you are sure of
all of the consequences.  I (and NCR, since they know nothing of
this) will not be responsible for any damage ensuing from attempting
this project.

Good Luck!
Dan Taylor
/* My opinions, not NCR's. */