Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!lll-winken!elroy.jpl.nasa.gov!usc!orion.oac.uci.edu!hardy From: hardy@golem.ps.uci.edu (Meinhard E. Mayer (Hardy)) Newsgroups: comp.sys.next Subject: Re: Adding memory to a NeXTstation Message-ID: Date: 15 Apr 91 20:36:02 GMT References: <1403@cameron.egr.duke.edu> Organization: U.C.Irvine, Dept. of Physics Lines: 30 Nntp-Posting-Host: golem.ps.uci.edu In-reply-to: amr@ee.egr.duke.edu's message of 15 Apr 91 12:25:32 GMT In article <1403@cameron.egr.duke.edu> amr@ee.egr.duke.edu (Anthony M. Richardson) writes: > Specifically, do the four meg simms have to be installed in > particular banks? The specs indicate that I can have 8 to 32 > meg installed on board. The 32 meg limit implies (to me) a limit > of 8 four meg chips. Do the four meg chips have to replace the > one meg chips in the lower two banks? This has been answered before, but here goes: In principle, the 4MB chips should fill the 4 banks near the power supply, but several people posted notes saying that the other way works too; for extracting the 1 MB simms a special tool is useful (you have to unhook tabs and pull on them; extra hands are also useful). The 20 MB configuration (remove 4 1MB csimms and replace by 4x4MB seems to be quite popular -- and should cost no more than about $ 750, allowing credit for the 1 MB simms). > > Also, what about parity? If I want parity checking (I don't, but > I am curious) I have to replace the factory installed memory > with parity ram, right? Yes -- you can mix parity and non-parity, but can' have parity checking. Greetings, Hardy -------****------- Meinhard E. Mayer (Hardy); Department of Physics, University of California Irvine CA 92717; (714) 856 5543; hardy@golem.ps.uci.edu or MMAYER@UCI.BITNET