Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!uunet!cbmvax!daveh From: daveh@cbmvax.commodore.com (Dave Haynie) Newsgroups: comp.sys.amiga.hardware Subject: Re: Large amounts of memory in a A3000 (64 meg+) Keywords: memory Message-ID: <19495@cbmvax.commodore.com> Date: 4 Mar 91 23:14:34 GMT References: <1991Feb18.214827.10775@watdragon.waterloo.edu> <1991Mar2.053412.2223@metapro.DIALix.oz.au> Reply-To: daveh@cbmvax.commodore.com (Dave Haynie) Organization: Commodore, West Chester, PA Lines: 34 In article <1991Mar2.053412.2223@metapro.DIALix.oz.au> bernie@metapro.DIALix.oz.au (Bernd Felsche) writes: >In <1991Feb18.214827.10775@watdragon.waterloo.edu> wewallac@watsol.waterloo.edu (Bill Wallace) writes: >>Does anyone have suggestions for how to get a large amount of memory in a A3000? >Just a suggestion: Make sure that it has at least parity, or even >better EDAC. There might only be a 1/100 million chance of a bit >error, but the more bits you have the greater tha chance. There's >nothing worse than the system falling over after 18 hours of >ray-trace. Well, error correcting memory might be useful. Parity memory would give you a larger target for that random bit drop, and guarantee the crash, since the only real recourse for a parity error, other than ignoring it, is to force a system error (UNIX can sometimes deal with it -- a parity error on a code page could be fixed simply by reloading that code page). A parity error in the data space of a ray trace would probably, at wort, give you an ugly image, at best, be undetectable. Certainly such errors elsewhere, as in big financial models or some-such, are more dangerous. But such errors are extremely rare. >The extra cost is well worth it. No I don't know of anybody who make >the things for Zorro III. To date, no one has announced a Zorro III memory board, far as I know at least. But who knows, there's an Amiga show in NYC this month, and another next month. Shows are often a good time to introduce new products. >Bernd Felsche, _--_|\ #include -- Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests" {uunet|pyramid|rutgers}!cbmvax!daveh PLINK: hazy BIX: hazy "What works for me might work for you" -Jimmy Buffett