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- Newsgroups: comp.sys.mac.hardware
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!decwrl!sun-barr!ames!agate!stanford.edu!leland.Stanford.EDU!thorn
- From: thorn@leland.Stanford.EDU (Shannon Lee Thornburg)
- Subject: Re: Theory on IIsi upgrade failure
- Message-ID: <1992Nov6.065153.23335@leland.Stanford.EDU>
- Keywords: IIsi, 25mhz, upgrade
- Sender: news@leland.Stanford.EDU (Mr News)
- Organization: DSG, Stanford University, CA 94305, USA
- References: <1992Nov6.060708.5264@mnemosyne.cs.du.edu>
- Distribution: usa
- Date: Fri, 6 Nov 92 06:51:53 GMT
- Lines: 18
-
- In article <1992Nov6.060708.5264@mnemosyne.cs.du.edu> wrast@nyx.cs.du.edu
- (Winston MacKenzie Rast) writes:
- >...I have an opinion on why some IIsi's
- >might be failing...
- >...to me it would seem that if your IIsi did NOT have 80ns or faster simms
- >installed in it, the upgrade would not work.
-
-
- Nice try, but it was the first thing I thought of also. I tried two sets of
- SIMMs in my IIsi after the upgrade: the original 512kB SIMMs that are clearly
- labeled '80ns' on the back, and a set of 4MB SIMMs which I guess from the
- numbers on the chips are also 80ns.
-
- The upgrade failed to work with either set of SIMMs. In fact, with the
- original Apple 80ns SIMMs the problems were much worse.
-
- -- Shannon Thornburg
-
-