Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!ginosko!usc!henry.jpl.nasa.gov!elroy.jpl.nasa.gov!hacgate!lori
From: lori@hacgate.UUCP (Lori Barfield)
Newsgroups: comp.sys.apollo
Subject: Re: Ethernet board for Apollo3000 Actually a 3Com503 Board?
Message-ID: <5520@hacgate.UUCP>
Date: 12 Oct 89 17:19:29 GMT
References: <4548@ginosko.samsung.com> <15362@netnews.upenn.edu>
Reply-To: lori@hacgate.UUCP (Lori Barfield)
Organization: Hughes Aircraft Co., El Segundo, CA
Lines: 19

In article <15362@netnews.upenn.edu> shull@scrolls.wharton.upenn.edu (Christopher E. Shull) writes:
>[...]
>   2)  the original Apollo DN3000's didn't understand anything but
>       token ring boards, and there is a boot PROM (or something) on
>       the motherboard that needs to be replaced for them to accept
>       an Ethernet board as its primary network.

Actually, this little PROM isn't necessary at all.  The only thing it
is used for (apparently) is self-diagnostics at reset time.  If you
take out your ring card (like I did from my DN3000), the diagnostics
will fail because the Domain PROM tells it to look for a ring card.
But since this check comes last, the loss is trivial.  You can EX AEGIS
anyway.

According to our service rep., replacement of this PROM is included as
part of regular maintenance.  I haven't bothered.


...lori