Software Vault: The Gold Collection/Software Vault - The Gold Collection (American Databankers) (1993).ISO/cdr12/v93n04x.zip/V93N042.IBM

Text File | 1993-03-31 | 29KB | 717 lines

29-Mar-93 18:11:39-MST,28527;000000000000
Mail-From: GHICKS created at 22-Mar-93 19:03:40
Return-Path: <[e-mail]>
Message-ID: <[e-mail]>
Date: Mon, 22 Mar 93 18:48:02 GMT+1
From: "Info-IBMPC Digest" <[e-mail]>
Reply-To: [e-mail]
Subject: Info-IBMPC Digest V93 #42
To: "Info-IBMPC Distribution": ;

Info-IBMPC Digest           Mon, 22 Mar 93       Volume 93 : Issue  42

Today's Editor:
         Gregory Hicks - Rota Spain <[e-mail]>

Today's Topics:

Send Replies or notes for publication to: <[e-mail]>

Send requests of an administrative nature (addition to, deletion from
the distribution list, et al) to: <[e-mail]>

Archives of past issues of the Info-IBMPC Digest are available by FTP
ONLY from WSMR-SIMTEL20.ARMY.MIL in directory PD2:<ARCHIVES.IBMPC>.

----------------------------------------------------------------------

Date: 11 Feb 93 22:00:00 GMT
From: Srikanth Viswanathan <[e-mail]>
Subject: "Start Command"

 [e-mail] (David Shy) writes...
> [e-mail] (William M. Utter) writes:
>>
>>    I want to change my workplace from PMSHELL.EXE to CMD.EXE (Or
>>something else), but when I do I always get an OS/2 Window.   When I
>
>look in your config.sys for a line which starts w/ protshell (it's
>the first line in mine.)  if you want to change from pmshell.exe
>to cmd.exe, do it at this line.  it should work.  i know it did for

Or, you could do what I do.  Add /FS to the SET RUNWORKPLACE=..\CMD.EXE
line, then make a STARTUP.CMD file like this:

start /fs
EXIT

This way,  you have a COMPLETE text-based, multitasking OS.  Of course,
PM is still there,  but you see it only if you run PM based programs or
start windowed sessions.

Srikanth

------------------------------

Date: Wed, 3 Mar 1993 04:34:17 GMT
From: [e-mail] (Barry Sardis)
Subject: 486dx, 486sx, 486dx2

[e-mail] writes:

>>  [...deleted..]

>>> 1- A 486DX has a complete math coprocessor built into it.

>>> 2- A 486SX is a 32bit CPU with no math coprocessor.

>>> 3- A 486DX2 is an OEM product and can not be bought by end
>>>users It is bought and instaled by manufacturers.

>If you call around you can find quite a few places that will sell you the
>486DX2(not the overdrive).  Now whether they are suppose to or not, I don't
>know.

>Todd

The DX2 is a "speed doubled" variant of the DX. The CPU runs twice as
fast as the rest (I/O) of the system. So the 486DX2/50 is 50MHz
internal and 25 MHz external (to the chip). The /66 is 33MHz external.
Note that the 486DX/50 is 50MHz both internal and external and could
outperform the /66 in some applications. I think another area of
concern is with things like VESA which may max out (I think at 33MHz)
below the capability of a given CPU.

Barry Sardis        | Home:   [phone]
1241 Laurie Avenue    | Office: [phone]
San Jose, CA 95125    | Fax:    [phone]
Email: [e-mail] or [e-mail]

------------------------------

Date: Tue, 02 Mar 93 16:39:27 CST
From: [e-mail]
Subject: Colorado DJ10 Tape Drive as Logical Disk?

I'm acquiring a DJ10 120Mb Colorado tape drive.  At $150 who can
resist?  Does anyone have any experience with using such a tape drive
as a logical drive?  In other words, has anyone developed a means of
reading and writing to the tape drive as if it were a disk?  I realize
that the access time would be prohibitively slow, but I'm interested
anyway.

                                        Russell Ragar
                                        Office Systems Specialist
                                        Dept. of PM&R

------------------------------

Date: 12 Feb 93 15:40:46 GMT
From: "Timothy F. Sipples" <[e-mail]>
Subject: IBM OS/2 Tech Support
Keywords: os/2

 [e-mail] (Daniel Tran) writes:
>Yesterday I received a call from IBM OS/2 tech support. It was
>regarding the unremovable & duplicating icons on WPS that I reported to
>them on June 28.  1992.  Yup, they finally call me 7 months later.  The
>person I spoke with was very pleasant (it took me a while to recall
>this problem) & he apologized for the DELAY.  I fixed this problem by
>reinstall os/2 2.0 from scratch, i told him.  I pointed out there're
>minor problems here & there but now I'm afraid to call IBM again ......
>His response was: "Next time if you call, please tell IBM that the
>current problem is preventing you from doing your work ....", and this
>will give your call a higher priority.  Nonsense, I thought, why did
>you think I call IBM support in the first place.  Common IBM, you can
>do better than that.

No, he's correct.  IBM will assign a priority level (1, 2, or 3) based
on how urgent you feel the problem is.  They should have asked you
about the severity of the problem.  "1" means you're down and the
report is due on the boss's desk tomorrow morning (:-)), "2" means it's
a fairly major problem which hampers your work but doesn't halt it, and
"3" means give me a call back when you get a chance -- I've found a bug
with Klondike Solitaire.  :-)

This system is more flexible than the usual system -- it helps you
report minor bugs and oddities that would ordinarily be ignored.  It
also lets you get more urgent help when you need it.  Let me put it
this way: would you want to wait on hold until IBM sifts through all
the Klondike Solitaire bug reports from other callers?

Note that IBM may not ask you for a specific number (to indicate
severity), but you can always provide it.  If they don't ask, they'll
assign a number based on a subjective assessment of how severe they
think the problem is.

I don't recommend abusing the system.  Indicate the severity of the
problem as accurately as you can.

Timothy F. Sipples      | READ the OS/2 FAQ List 2.0j, available from
[e-mail] | 128.123.35.151, anonymous ftp, in /pub/os2/all/info
Dept. of Econ., Univ.   | /faq, or from [e-mail] (send "HELP")
of Chicago, 60637       | [Post to ONE newsgroup only AFTER reading the List.]

------------------------------

Date: 3 Mar 93 10:59:16 AST
From: "Don Wright"  <[e-mail]>
Subject: LINDO and C

>Date: 16 Feb 1993 17:59:19 GMT
>From: [e-mail] (Teresa Narvaez)
>
>  I used borland c to write a C program.  I need to link this program
>with LINDO (a linear programming system written in FORTRAN).  I have
>the User's manual for LINDO but it has examples only for FORTRAN.
>Also, I have other reference books and they all have examples only on
>the FORTRAN environment. Does anyone know of a reference I could use or
>any ideas on how to implement this?

I haven't exactly written routines to be called from LINDO since I've
only used the student version on the PC and it doesn't have that
feature.  However, one could use a kludge which would involved writting
a routine which generates an ascii data file and then have the routine
start LINDO and invoke LINDO's TAKE command (such as using key-fake) to
read in the problem, analyze and generate suitable output.

If this isn't suitable, you will have to find out how the Fortran
routines are called by LINDO and then do a suitable conversion in your
C routines.  Does the documentation specify which Fortran compiler is
used for LINDO on the PC?

 Don Wright                         -Internet - [e-mail]
 School of Business-Acadia University              Phone [phone]
 Wolfville, NS, Canada-B0P 1X0                     Fax   [phone]

------------------------------

Date: 19 Feb 93 21:23:45 GMT
From: Kari Mattsson <[e-mail]>
Subject: M2ZMODEM / M2ZSERV setup problem. Any Help?
Keywords: M2ZMODEM Mikael Wahlgren M2ZSERV

First a short usage report:  My OS/2 2.0+SP is running marvellously. It
has been up 6.9 days a week on average since last may. I'm doing mainly
Paradox and IBM DBManager developing (while studying CS at Univ. of
Turku). The kernel seems unbelievably stabil compared to DOS or
Win30/31.  NEVER going back... (I've gotten rid of WinOS2 software
except for proper graphics/photos editing tool.)

Many ways, to my todays question:  Has anyone managed to work-out
Mikael Wahlgren's M2ZSERV which comes with (at least version 2.12 of)
M2ZMODEM.

I use this excellent piece of software occationally to upload some
Hobbes stuff to a friend of mine.  My current settings are as below. I
have verified them several times with the documentation and done some
changes, too.

Now calling in, username, and password goes OK. Then there is this
simple line of text with  "1) upload 2)download 3)shell 4)disconnect".
After this Tom goes to "2" (download) and...

I don't know what is wrong, but M2ZMODEM (I think it is it) always
shouts me  "PARSE ERROR  Z_TOM"  in a red dialog box.

It clearly refers to a) setting in userlist.bbs and/or b) the %2 in
m2zbbs.cmd???  the zserver.cmd seems to be ok to me.

ANY ideas are welcome!

/Kari

*** ZSERVER.CMD             (preparations for and execution of M2ZSERV)
@echo off
d:\communication\at2.exe 2 z1         { modem set to auto-answer mode }
mode com2:19200,n,8,1,to=off,xon=off,idsr=off,odsr=off,octs=off,
                                         dtr=on,rts=hs,buffer=on
cd \communication\zmodem
m2zserv com2
d:\communication\at2.exe 2 z0         { modem reset to normal mode }

*** M2ZBBS.CMD              (this is executed by M2ZSERV)
@echo off
SET M2ZBBS=TERM.ANSI;PATH.%2
M2ZMODEM -l %ModemPort% -prot BBS %1
SET M2ZBBS=

*** USERLIST.BBS            (this is needed)
guest;;z_guest;NO;;
tom;tom-pass;z_tom;NO;;

*** CONFIG.SYS              (an excerpt)
set m2z=-prty 0 -o d:\u\modem\log\tahko3.m2z -t -n -h
set rz=d:\u\modem\
set sz=d:\u\modem\upload\*.*
set z_guest=d:\u\public\;
set z_tom=d:\u\tom\;d:\u\public\;

P.S.  I think this M2ZSERV is just about the optimal way to share files
      with friends. The whole M2Z* set is well under 200K, too!

Kari Mattsson          #  YO-kyla 12 B 9, FI-20540 Turku, Finland
[e-mail]          #  Voice and Fax: [phone]
[e-mail]   #  *Disclaimer: I don't need any!*

------------------------------

Date: Tue, 2 Mar 93 16:10:56 EDT
From: [e-mail]
Subject: MS-DOS

From:  David Andrew Vaughan
Subject: MS-DOS

    Please correct me if I'm wrong but, as I understand it, Misrosoft
sells "raw" versions of MS-DOS to other companies (IBM for example) who
"customize" MS-DOS for their machines.  MS-DOS was never intended to be
made available to users in it's "raw" form but rather in the OEM form.

    1)  What sort of "customization" goes on at the OEM?

    I understand that IBM has ROM BASIC built in (whereas others
don't).  Is that to say that, MS-DOS purchased from IBM will not run on
any other machine (and vice versa)?  For example, IBM says BASIC or
BASICA will not run without ROM BASIC present (I've not challenged
this...).

    2)  If you build your own machine, how do you know which type of
MS-DOS to buy ("raw", OEM or "customized")?

    3)  If you buy the "raw" version of MS-DOS, how do you customize it
to your machine.

    4)  Does the type of MS-DOS (be it "raw", OEM or "customized")
depend on a certain BIOS, ROM, or what?

    Typically, you buy a hard drive and a controller together (or a
monitor and controller).

    5)  Is there a counterpart to MS-DOS that should be purchased to go
with MS-DOS?

    6)  Do you buy components to fit MS-DOS (OS/2, MINIX, brand-X) or
the other way around?

    7)  Does MS-DOS come with the purchase of a motherboard?

    Please forgive me if this is babbling but I find it somewhat
interesting and somewhat distressing.  Can someone help me make sense
out of this?

David Andrew Vaughan
Keane, Incorporated

------------------------------

Date: 13 Feb 93 23:00:57 GMT
From: John Lloyd <[e-mail]>
Subject: OS/2 2.1b dies w/ BASEDEV=AHA154X.ADD in CONFIG

 [e-mail] (Arne Albertsen) writes:
>Lately I got the wide distribution OS/2 2.1beta internal revision
>6.479 dated 92/12/09.

>After changing BASEDEV=IBMINT13.I13 into BASEDEV=AHA154X.ADD in
>CONFIG.SYS and rebooting the machine, it normally boots up,
>starts eventually to parse through the CONFIG file and winds up
>with these last words:
>
>"The system cannot find the file "E:\OS2\SYSTEM\COUNTRY.SYS"
>specified in the country command on line 31 of CONFIG.SYS file.
>
>Line 31 is ignored.
>The system is stopped.
>
>Correct the preceding error and restart the system."
>
>Yet there is nothing wrong with that particular line in
>CONFIG.SYS -- all worked fine using the INT13 driver.
>Even more peculiar, I heard of some local people here having a
>similar h/w environment and NO problems...
>
>H/W platform is a 486DX/50 w/ 16 MB RAM, SIS/486-F Chipset,
>AMI BIOS (5.5.1991), adaptec 1542B w/ Ver. 3.10 BIOS and a
>1.3Gig Hitachi scsi HDD.
>
>I tried both TSENG 4000 and some Oak VGA cards -- no difference.
>
>I set the adaptec DMA speed to 5.0 MB/s.
>
>What can I do to make use of the upper 300 Megs on HD using /2 ?

To allow access to the cylinders above 1024 you must do one of the
following :
1) Enable extended BIOS translation. This will decrease the number of
cylinders so that DOS and OS/2 can see the whole drive.

2) Edit CONFIG.SYS on disk#1 and add our driver to it. This will allow
OS/2 FDISK to see the whole drive. You cannot install on a partition
with more than 1024 cylinders and must remember to re-edit CONFIG.SYS
each time OS/2 reboots and copy our ADD to \OS2 appropriately. When
using this method I also recommend that you have the latest driver from
the 2.1 beta or our BBS. The Service Pack driver will also work.

Regarding the first question: as long as the Hitachi is the only drive
in the system there should not be a problem. Usually the message about
COUNTRY.SYS not being found is caused by drive letters shifting from
the way DOS assigns them; since you have only one hard drive this
should not happen. I have been trying to help someone else with an
Hitachi drive and they are seeing similar results; however they were
using a 1740. I personally have used a Seagate 1.6GB drive so it is
hard to say if there is a problem specific to the Hitachi drive.

[e-mail]

------------------------------

Date: Wed, 03 Mar 93 07:11:41 EST
From: Joel Saunders <[e-mail]>
Subject: OS/2 peer-to-peer networking and where did OS2-l at BLEKUL11 go??

Since this list is fielding more and more OS/2 queries, I thought that
I would ask the follwing two questions.

1) Does anyone know of any PD, Shareware, or inexpensive peer-to-peer
LAN software to connect two OS/2 machines on an Ethernet?  I have two
machines running OS/2 in my home office that connected via Ethernet and
I like to share files and printers between them.

   In the DOS environment, I have both LANTASTIC and NETWARE LITE which
both work fine. (I do network consulting).  I'd like to have the same
under OS/2 but IBM LAN SERVER is too expensive for my taste.

2) I'm a member of the List: OS/2 at BLEKUL11 and haven't received
anything from it for a few months.  Has it been stopped??

Thanks in advance for your time.
... Joel

------------------------------

Date: 12 Feb 93 21:50:19 GMT
From: Don Meyer <[e-mail]>
Subject: PGP for OS/2?

[e-mail] (Kai-Uwe Rommel) writes:

>OS/2 binaries for PGP 2.1, both 16- and 32-bit ones can be found on

>    ftp.uni-erlangen.de (a german site)
>    pub/pc/os2/fauern/crypt/pgp*

>Don't upload this to US ftp sites because of legal problems (remember
>it's data encryption software).

The DOS versions are already all over the place in the US, and I
haven't heard of any complaints/problems.  I did a GOPHER search for
PGP the other say to try and answer the original poster's question and
received 6 pages of listings.  Unfortunately, I couldn't find anything
to differentiate DOS & OS/2 versions, so I couldn't help him.  However,
the PGP2X for amigas was very well differentiated on all the systems.

So if you do decide to "put it up" on a U.S. site, you're probably in
good company.

Don Meyer     Network Manager, UIUC College of Ag Microcomputer Facility
internet:     [e-mail]

------------------------------

Date: Tue, 02 Mar 93 16:43:17 CST
From: [e-mail]
Subject: Quality of Floppy Disk Manufacturers

Could someone direct me to a review of floppy disk manufacturers for
quality?  The Verbatim DS 3.5" I've been getting are horrible and the
High Density's are not much better.  I don't recall seeing a review of
this sort in PC Magazine.

                                        Russell Ragar
                                        Office Systems Specialist
                                        Dept. of PM&R

------------------------------

Date: 11 Feb 93 21:14:49 GMT
From: Chris Waters <[e-mail]>
Subject: Questions on using cmd.exe in place of WPS

 [e-mail] writes:

> [e-mail] (Chris Waters) writes:
>>  [e-mail] (Matthew Staben) writes:
>>
>> >I too have replaced by workplace shell with CMD.EXE.  In order to take
>> >care of the "SHUTDOWN" problem, you have two alternatives:
>>
>> Actually, there's a third, much simpler alternative.  Use 'SETBOOT /B'.
>> It's part of OS/2, as shipped.  :-)

>My understanding is that without the WPS....you don't need to shutdown.

NO NO NO!!!  You still have to flush the cache buffers!!!!

Ctrl-Alt-Del may be fine (this *does* flush the cache buffers), but I
seem to remember that I had an occasional minor problem with this (i.e.
the system reported and fixed errors at the next boot).  I started
using "SETBOOT /B" and haven't had a problem since.

Turning off the power without flushing the buffers is a *sure* way to
cause problems, though!!

Chris Waters    | the insane don't | "Without gratuitous sex, we would be no
[e-mail]| need disclaimers |  better than animals."  --M. Swanwick

------------------------------

Date: 14 Feb 93 04:27:36 GMT
From: Brian Steuer <[e-mail]>
Subject: Service Pack safe on 2.0.1 systems?

 "Joo C. Chung" <[e-mail]> writes:
>
> [e-mail] (Richard Alan Schafer) writes:
>>I recently acquired one of the Ultimedia M57 PS2s, which came
>>preloaded with OS2 2.0.1.  Is it safe for me to put the service pack on
>>this system?

>You don't need to apply the service pack to your M57. The version of
>OS/2 that comes preinstalled includes all the changes in the service
>pack.

I seem to remember that the preinstalled machines actually had a subset
of the fixes that the service pack contains. However, I also seem to
remember that installing the service pack over a preinstalled setup was
not recommended. IMHO if there isn't something specificly wrong with
your system right now, I would forget about the service pack. (Don't
fix what isn't broken) Since 2.1 should be out soon, you can probably
wait for that for new features.

Brian Steuer              //   What the ....?
Cal Poly, SLO            //
[e-mail],[e-mail],
[e-mail],[e-mail]

------------------------------

Date: 15 Feb 93 20:00:29 GMT
From: "Timothy F. Sipples" <[e-mail]>
Subject: Service Pack safe on 2.0.1 systems?

It is, but the standard advice applies, namely that you should not
apply the Service Pak unless you are experiencing problems which the
Service Pak remedies.

With OS/2 2.1 looming large on the horizon, perhaps you might install
that version when it is available.

Timothy F. Sipples      | READ the OS/2 FAQ List 2.0j, available from
[e-mail] | 128.123.35.151, anonymous ftp, in /pub/os2/all/info
Dept. of Econ., Univ.   | /faq, or from [e-mail] (send "HELP")
of Chicago, 60637       | [Post to ONE newsgroup only AFTER reading the List.]

------------------------------

Date: 15 Feb 93 05:28:48 GMT
From: Ric Anderson <[e-mail]>
Subject: SUMMARY: memory limits
Keywords: memory

In a news article, I wrote:

= Does anyone have experience in running OS/2 2.0 with more than
= 16mb of ram in the system?  I remember early problems with
= 16mb machines (or their BIOSes), but don't know if those were
= resolved.  I'm looking toward 24 or 32mb in a new 486 box which
= will be running OS/2.

I got replies from:
    [e-mail] (Larry Goodman)
    [e-mail]

L_P_Goodman said:
"I'm running OS/2 2.0 with 20mb RAM and I'm using all of it. I seem to
remember that you may have to adjust your config.sys file (which is
documented)."

marvin said:
"I ran a machine with 20M.  It was a '386/40, with Os/2 v2.0 GA + CSD.
I found that the difference between running with 20M and running with
8M was almost irrelevant, and indeen, not at all worth the cost of
upgrading.

 Generally, a first-time run on anything was normal speed.  Seriously,
to load a copy of say, WinOs/2 v3.1beta (the first beta), it'd be the
same speed as always.  However, to run another copy, it was a decent
speed.  Same story with popping up multiple Dos sessions; instantaneous
activation of a second instance.  Switching between full-screen gra-
phics sessions was considerably faster.  I was able to pump up the disk
cacheing scheme, and that helped a bit.

 Generally, I find that there's no need to go to more than say 12M,
performance-wise.  The difference between a '386/40 and a '486/33 or
between the latter and a '486/50 would create a greater increase in
performance.  Perhaps a '486/50 with 20M would be useful, but anything
lower just can't support the data throughput required for enough apps
running to take up 20M or so of ram."

Thanks to the responders.  I figured that "more than 16mb" was no
longer the kiss of death, and that seems to be correct.  Extra RAM
really helps if you like to leave things sitting in the background when
idle to avoid waiting forever for them to start up in my experience so
I'll probably put at least 24mb on my new system...

Ric

------------------------------

Date: Tue, 02 Mar 93 14:36:10 BD3
From: Ronaldo Baltar <[e-mail]>
Subject: SVGA or VGA, which one's better for Windows 3.1?

To some "expert",

    I'm using a 386 machine, with a TRIDENT SVGA graph card, and I have
two questions:

1) When I reset my computer I recive the following information: "RTVGA
1024 bytes RAM VIDEO", but when I run some program like WINDOWS 3.1
just 256k of RAM video is indentified. How is it possible?

2) When I use the window's driver for SVGA mode, the images appears
smaller than when I use the driver for VGA, i.e. the VGA mode is more
confortable to work than SVGA. My question is: what is the real
advantage using SVGA graph card with Windows 3.1? (My monitor is 14'').

Thank you in advance,

Ronaldo Baltar - Universidade Estadual de Londrina - Parana - Brazil
e-mail adress: [e-mail]

------------------------------

Date: 16 Feb 93 04:13:28 GMT
From: Wey Jing HO <[e-mail]>
Subject: tcp/ip nfs problem with OS/2 2.1 Drives icons.

 [e-mail] (Leo J. Irakliotis) writes:

> [e-mail] (Josh Rovero) writes:
>|> READ THE DOCS!
>|>
>|> They specifically state that drive icons over NFS don't work.
>|>
>|> But MrFilePM drive gadgets work just fine....

>Thanks. To the best of my knowledge, the manuals I have, i.e. TCPIP User's
>Guide and TCPIP Installation and Maintenance do not mention about the fact
>that drive icons don't work over nfs.

Sorry, I did not follow early discussion of this.  What do you mean by
saying that the drive icons over NFS don't work?

I have OS/2 2.1 beta with TCP/IP Beta from PDK2 CDROM, and I have
mounted NFS disk from our Sun workstation using:

mount -lusername -ppassword -uUID -gGID <drivename:> <server:mount location>

Using this, I have created drive Y: and Z: and they both show up as
icons.  I can also access them by clicking the icons and so on.

So, if I am thinking what you are saying, it should work.

>Wey Jing Ho    Tel: [phone]   E-mail : [e-mail]<
>  Physics Dept, Monash Univ, Wellington Rd, Clayton, VIC 3168, AUSTRALIA   <

------------------------------

Date: 16 Feb 93 01:47:58 GMT
From: Scott Moore <[e-mail]>
Subject: TRAP 0002 -- how do you find the bad address??

[e-mail] (Timothy Smith) writes:

>    I have a 386/40 with 8mb of ram and 64k of cache that keeps getting
>a TRAP 002 (NMI - parity error) and I would like to know do to find
>the offending SIMM.  I have ran dos type ram diagnostics for days without
>a single error, the errors happen only with os/2 and winNT.  So it seems
>when that system is stressed, it fails.

>Here is the error message os/2 gave me:

>##160:fff60967 - 000d:9967.
>60000, 9084
>038600d1

>Now, given this info, how can I find a nice linear address space to
>locate that bad memory?

What you really need is to find out what MEMORY CHIP/MODULE (SIMM)
caused the problem. Since many modern computers use interleaved
addressing, just knowing the linear address won't do you any good. You
might try calling the motherboard mnaufacturer, but I think you can
save yourself some time by just tracking it down the "hard way" like we
have all had to do.

First, check if you are mixing different types/makes of ram (like 256kb
with 1mb simms). I have been told that mixing ram types can cause
problems because of the interleave.

Then, check the speed of the ram (80ns or whatever) matches the
requirement for your machine.

Then, try using a memory wait state (selectable via jumper or bios
option). If you have an advanced bios (like the new AMI), you may even
change the DRAM access timing.

Finally, get a loaner module and swap it out with each module in the
machine to see if the problem goes away. If you cannot get the problem
to happen consistently, you may have to swap a module, wait serveral
days (or machine hours) for the failure to happen again. Unfortunately
this seems to be the last best way to discover failing modules.

When this occured with my machine, I also tried EVERY memory test I
could find to isolate the chip. Bottom line: unfortunately, OS/2 is
just about the best memory test going.

Scott A. Moore [SAM]
[e-mail]
Santa Cruz, CA USA
408-423-1624
ExaByte Corp.         | "my opinions do not represent my company, etc."

------------------------------

Date: 16 Feb 93 15:11:03 GMT
From: Ted Richards <[e-mail]>
Subject: TRAP 0002 -- how do you find the bad address??

Timothy Smith ([e-mail]) wrote:

: Greetings...

:     I have a 386/40 with 8mb of ram and 64k of cache that keeps getting
: a TRAP 002 (NMI - parity error) and I would like to know do to find
: the offending SIMM.  I have ran dos type ram diagnostics for days without
: a single error, the errors happen only with os/2 and winNT.  So it seems
: when that system is stressed, it fails.

I had a similar problem.  I did find one DOS shareware program that
would find the problem.  It's called RAMTEST, and I found it on
SIMTEL20 in directory MSDOS.SYSUTL, file RAMTEST.ARC.  It would only
see the error if I ran it immediately after rebooting.  If I reran the
test, it would not see the error.  I was able to isolate the bad SIMM
by interchanging pairs of SIMMs to see which changes caused the error
address to change.

Ted Richards            [e-mail]             [...!uunet.ca!isgtec!ted]
ISG Technologies Inc.   6509 Airport Rd., Mississauga  Ont.  Canada   L4V 1S7

------------------------------

End of Info-IBMPC Digest V93 #42
********************************
-------