Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!convex!swarren
From: swarren@convex.com (Steve Warren)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Where can I buy a Replacement Power Supply for A500?
Message-ID: <105877@convex.convex.com>
Date: 6 Sep 90 21:46:30 GMT
References: <900902.171843.CDT.C506634@UMCVMB.MISSOURI.EDU>
Sender: usenet@convex.com
Organization: Convex Computer Corporation, Richardson, Tx.
Lines: 29

In article <900902.171843.CDT.C506634@UMCVMB.MISSOURI.EDU> C506634@UMCVMB.MISSOURI.EDU (Eric Edwards) writes:
>>        Sort of.  In the specs it says that daisy-chaining off the
>>expansion slot it NOT allowed.  You either add one device or a
>>well-built expansion box.
>
>Becuase of problems with the interaction of daisy chained componanants on
>the A1000.

Speaking of which, I've been wondering about something.  On the 1000 one
problem I've seen mentioned was that most expansion chassies did not buffer
up the bus signals before connecting them to the expansion backplane.  This
meant that most of them did not perform properly.  Now I've been wondering,
wouldn't it be relatively simple to piggy-back buffers on-top of the SOTS
driver chips on the A1000 motherboard?  This would double the drive current
being provided to multiple cards in an expansion chassis.

The one possible problem this might cause would be to mess up timing by
adding too much to the load of the internal circuits on the motherboard
that are driving these buffers.  I would not expect this extra delay to
approach the kind of delay that would be added by adding buffers in series
externally to the A1000 (in the expansion-chassis), however.

What do you think?

--
            _.
--Steve   ._||__      DISCLAIMER: All opinions are my own.
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