Newsgroups: comp.sys.mac.hardware Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!uunet!viusys!uxui!unislc!mrc From: mrc@unislc.uucp (Mike Cederholm) Subject: Re: New SE/30 problem References: <676094904.5@blkcat.FidoNet> <1991Jun5.150350.21814@eng.umd.edu> <1991Jun5.173719.8604@milton.u.washington.edu> Message-ID: <1991Jun7.223337.29298@unislc.uucp> Organization: unisys Date: Fri, 7 Jun 91 22:33:37 GMT tlk@milton.u.washington.edu (Jeremy Norberg) writes: >russotto@eng.umd.edu (Matthew T. Russotto) writes: >BB >>In article <676094904.5@blkcat.FidoNet> Bill.Whitacre@p916.f421.n109.z1.FidoNet.Org (Bill Whitacre) writes: >>>I sure could use some help with a perplexing problem. >>> >>>These are SE/30's that've been upgraded to 5MB of RAM by Falcon (the sole GSA vendor for Apple h/ware!) and internal 40MB hard drives. >>> >>>Turning on the machines out of the box we got the question mark'd disk instead of booting from the internal HD. After booting from a floppy and having it recognize the HD it would boot from it upon restart. Then, in unpredictable places while running va >>>rious s/ware the machine would hang with various errors from 'out of memory' to 'bus error' to plain old 'system error'. Sometimes they won't recognize a floppy that's shoved in, sometimes they will. >>> >>>It's all very strange and quite disturbing. I have never had a problem with getting a Mac out of the box and having it fire up just fine. >>In the wild guess arena-- Is the RAM the proper speed rating for the SE/30 >>(I think 120ns is required, but it could be 100ns) >>-- >>Matthew T. Russotto russotto@eng.umd.edu russotto@wam.umd.edu >> .sig under construction, like the rest of this campus. >The SE/30 as well as everything above it require 100ns chips or better!! >Only Plus/Classic can use 120ns SIMMS. >-- > "The Power to be Your Best" -Apple Computers > ------------------------------------------------------------ > Jeremy C. Norberg tlk@u.washington.edu I hate to disagree but per the Inside Mac series Hardware documentation ( I am at a loss for the title right now) it clearly states that 120ns or better memory is required for the SE/30, not 100 ns simms. I know of no Techical note reversing this and the dealers I talked to said the didn't either. Thanks, unislc!mrc@sun.com +=======================================================================+ Mike Cederholm dba. | (801)-254-7039 pineHOUSE Development | (801)-594-4460 @ Unisys,SLC 1246 Lampton Rd. | So. Jordan, Utah 84065-9218 | +=======================================================================+ uucp: unislc!mrc@sun.com internet: still working on it.. +=======================================================================+