Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!bu.edu!polygen!jerry
From: jerry@polygen.uucp (Jerry Shekhel)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: 386 memory problems - help needed
Message-ID: <1109@stewart.UUCP>
Date: 22 May 91 14:51:00 GMT
References: <22764@shlump.lkg.dec.com>
Reply-To: jerry@stewart.UUCP (Jerry Shekhel)
Organization: Polygen Corporation, Waltham, MA
Lines: 43

simon@hpspwr.enet.dec.com (Curiosier and curiosier...) writes:
>
>I need help in solving a serious problem:
>
>Software:  QEMM 5.12 with Windows 3.0; 512K PC-CACHE (*NO* Smartdrv.sys!).
>
>Problem One:
>
>The boot-up memory test counts to 4096.  The BIOS screen that comes
>after this reports 640K plus 3072K extended.  The board has 4 1x1 SIPP 
>modules.  Manifest also shows 3072K.  The previous board showed all 
>3456K.  Where are remaining 384K? 
>

Some motherboards (DX and SX) cannot relocate the 384KB RAM between
640KB and 1MB.  Some are even weirder -- my 386/33, for example, can
relocate different portions of the 384K depending on how much memory
I have installed.

>
>Problem Two:
>
>Windows started to behave unpredictable.  It lets me open a few
>non-Windows applications (sometime two, sometimes four, every time 
>different), then, at an attempt to open another, the system 
>goes to reset on its own.
>

I had similar problems when I first got the DX motherboard.  Make sure,
if you have RAM shadowing on, to force QEMM to exclude those regions 
between 640KB and 1MB that are covered by RAM shadowing.  This fixed
the problem for me.

Good luck.
--
+-------------------+----------------------+---------------------------------+
| JERRY J. SHEKHEL  | POLYGEN CORPORATION  | When I was young, I had to walk |
| Drummers do it... | Waltham, MA USA      | to school and back every day -- |
|    ... In rhythm! | (617) 890-2175       | 20 miles, uphill both ways.     |
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|           ...! [ princeton mit-eddie bu sunne ] !polygen!jerry             |
|                            jerry@polygen.com                               |
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