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- Newsgroups: comp.os.ms-windows.misc
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!moe.ksu.ksu.edu!hobbes.physics.uiowa.edu!news.uiowa.edu!news.weeg.uiowa.edu!twright
- From: twright@news.weeg.uiowa.edu (Thomas Wright)
- Subject: Re: Memory parity error detected. SYSTEM HALTED.
- Message-ID: <1992Sep14.215756.9558@news.weeg.uiowa.edu>
- Keywords: WINDOWS 3.1, CRASH
- Organization: University of Iowa, Iowa City, IA, USA
- References: <1992Sep10.162106.14993@mksol.dseg.ti.com> <1992Sep12.234254.6893@techbook.com> <1992Sep13.061626.8684@ee.ubc.ca>
- Date: Mon, 14 Sep 1992 21:57:56 GMT
- Lines: 40
-
- In article <1992Sep13.061626.8684@ee.ubc.ca> johnt@ee.ubc.ca (john jay tanlimco) writes:
- >In article <1992Sep12.234254.6893@techbook.com> jwettern@techbook.com (Joern Wettern) writes:
- >>In article <1992Sep10.162106.14993@mksol.dseg.ti.com> mccall@mksol.dseg.ti.com (fred j mccall 575-3539) writes:
- >>>In <1992Sep10.133717.21198@funet.fi> ms86817@cs.tut.fi (Matti Suokko (OH5MRM)) writes:
- >>>
- >>>> SYSTEM ERROR: Memory parity error detected. System halted.
- >>>
- >>>
- >>>> What will cause the error message above ?
- >>>> When I upgraded WIN 3.0 to WIN 3.1 it worked fine, but then
- >>>> I formatted my HD and installed WIN 3.1 again, and
- >>>> now it crashes 50 times a day.
- >>>
- >>>This is generally caused by either bad memory or having memory with
- >>>different speed ratings (on some motherboards). The reason it worked
- >>
- >>That seems to be the case for me. I have 2M of 80 ns SIMMS and 2M of 70 ns
- >>SIMMs. What I don't understand is WHY this would cause a partity error. My
- >>system needs 80ns and everything faster should not make any difference.
- >>Would anyone care to expalin this to me?
- >
- >I have 4 1x9 80ns and 4 1x3 70ns running Win3.1 happily. Are you sure
- >you don't have bad SIMMs?
- >
- >--
- >=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
- >John Jay Tanlimco | University of British Columbia | Tel: (604) 526-3160
- >johnt@ee.ubc.ca | M.A.Sc. Electrical Engineering | Fax: (604) 522-7833
- >=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
-
- I suspect your machine arranges its RAM like most SX's, with 2 SIMM slots
- per bank. You can usually use 80 ns in one bank and 70 ns in the other, but
- if you're using memory interleaving it will fail sometimes. The reason is
- that interleaving, like page mode, is a way to refresh some DRAM while another
- area is being read to simulate zero-wait-state operation. The timing
- difference in the DRAM between banks throws the address decoder out of sync,
- and you get parity errors.
-
- twright@umaxc.weeg.uiowa.edu
-
-