Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!utgpu!water!watmath!clyde!cbosgd!ucbvax!mit-richter.UUCP!krowitz From: krowitz@mit-richter.UUCP.UUCP Newsgroups: comp.sys.apollo Subject: Re: What to do with DN300's Message-ID: <8711251837.AA29051@EDDIE.MIT.EDU> Date: Wed, 25-Nov-87 12:23:00 EST Article-I.D.: EDDIE.8711251837.AA29051 Posted: Wed Nov 25 12:23:00 1987 Date-Received: Sun, 29-Nov-87 04:28:21 EST Sender: daemon@ucbvax.BERKELEY.EDU Distribution: world Organization: The ARPA Internet Lines: 26 Don't hold your breath ... we've been wanting to get more than 3 MB of memory on our existing DN330's since the day we got them (only a few months before the DN3000 was announced). You would figure that if they could put 2MB plus the entire CPU on one board, that the memory expansion board could handle at least another 2MB. We even heard that a part number had been assigned to larger memory boards for the DN330, but no such board seems to exists. Since the minimum memory requirement is going to grow when SR10 comes out, this is a major concern to us. The problem seems to be one of volume production -- Apollo can turn out DN3000's in large numbers very cheaply. The demand for DN3xx upgrades is smaller, and the production costs for small runs is high. In addition, a 20 or 25Mhz CPU would require a completely new memory design and/or a cache. The existing memory systems can't keep up with the 68020 at speeds past 16Mhz. This is why the DN5xx-Turbos require the memory system upgrades and why the DN4000 comes with an 8Kb cache built into it. -- David Krowitz mit-erl!mit-kermit!krowitz@eddie.mit.edu mit-erl!mit-kermit!krowitz@mit-eddie.arpa krowitz@mit-mc.arpa (in order of decreasing preference)