HDTenEightyP/NetNews huggingface dataset:
From: guidry@casbah.acns.nwu.edu (David Guidry)
Subject: Re: IBM PS/2 50Z For Sale
Organization: Northwestern University, Evanston Illinois.
Date: Mon, 13 Apr 1992 19:15:45 GMT

In article <54327@hydra.gatech.EDU> gt4598c@prism.gatech.EDU (gt4598c Robert Nowicki) writes:
>
>		** IBM 50Z For Sale **
>
>* IBM 50Z with 1 meg RAM on mother board
>* Kingston Expansion board with 8 megs RAM
>* 120 Mb Hard drive
>* 3.5 1.44 Mb internal drive
>* 5.25 720 K external drive
>* IBM VGA monitor
>* Goldstar 2400 baud modem
>
>I want to sell this machine to upgrade to a 486. I do not wish to
>sell the parts separately. I'm asking $ 1600.00 for the whole thing,
>with the buyer paying shipping. (I will deliver it if you are within
>100 miles of Atlanta).

$1600.00??????

for a 286/12?!?!?!?!?!?!?!

What are you on and where can I get some? ;-)

I can mail-order a 386SX for $1000 similarly configured to your machine,
If I shell out 1600, I could get a 386DX/33...
If I want to shell out 2K, I can get a 486DX/33.


You must be joking.
I wouldn't expect to get more than $500 for this paperweight.
-- 
David A. Guidry       |    On a clear disk, you      |       empire
Student Consultant    |      can seek forever        |   Not just a game
Academic Computing and Network Services |   GEAUX    |  but a way of life
<empire@nwu.edu><dawidge@nuacvm.bitnet> |  SAINTS!!  |  -- Gott im Himmel
Newsgroups: comp.sys.ibm.ps2.hardware
From: paul@panix.com (Paul Gatker)
Subject: Re: MCA bus speed
Date: Wed, 8 Apr 1992 04:27:50 GMT
Organization: PANIX Public Access Unix, NYC
Keywords: MCA

In <7APR199213393782@zeus.tamu.edu> dhp0245@zeus.tamu.edu (Don Patchen) writes:

>After reading many articles on this subject, I finally was able to acertain
>that there is no real bus speed.  The whole concept of the MCA bus is that it
>is asynchronus, therefore, can be at any speed.  The problem is that there
>are not enough items out there that take advantage of the bus.  
>	If I am wrong then someone please correct me...but I believe this
>is correct.

 Quoting pp222 of PC Magazine  Jan 28,1992 article "MCA Memory Boards"

.........According to PC Magazine Lab's tests using a 25mhz ibm ps/2 model 
 70 a-21, with one of the top-performing mca memory boards you can expect
 a loss of only 20-25 percent of system board memory throughput. In contrast,
 with memory boards for 33mhz eisa machines, there might be as much as a 75
percent throughput loss.

 
-- 
*******************************************************************
 paul@panix.com                            COMPULITE GRAPHICS
brooklyn, ny, usa                         Design & Consultation
*********************************************************************
From: pr@umiacs.umd.edu (Jesus Rodriguez)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: %57SX
Date: 12 Apr 92 00:12:10 GMT
Distribution: na
Organization: University of Maryland Institute for Advanced Computer Studies


Does anyone have a 57SLC for sale?  Also does anyone know anything
about IBM's HelpBUY plan?

				jesus
				pr@umiacs.umd.edu
Organization: University of Illinois at Chicago
Date: Thursday, 9 Apr 1992 10:07:59 CDT
From: Jeff Calusinski <U54346@uicvm.uic.edu>
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: MCA bus speed

Well here is the scoop on the bus speed of the MCA bus. The original
PS/2 Model 50 bus speed was that of the clock, so 10MHz. And all of the others
in the PS/2 line also operate at the speed of the CPU. ISA machines all operate
at 8MHZ no matter what the speed of the  processor. The data transfer in the
MCA bus is even more inpressive, it will range any where between 10MB to 20MB
per sec on all ps/2 except the 90 and 95. They can double transfer data so they
can operate 20-40MB per sec. MOst ISA machines can only do 2-3.5 MMB max so
there is definately alot of advantages with MCA with respect ot the bus.
As for the adapters go ona the MCA they all must be able to operate at least
10MHz becase of the model 50 but most give you the ability to match that of the
 processor. You will also find that busmaster controllers will give you the
best performance, because it doen't require the cpu to transfer data.
Hope this helps.
_Jeff
--
Jeff Calusinski (IBM Collegiate Marketing Representative)
University of Illinois at Chicago Team | Telephone: (312) 413-5539
One IBM Plaza  15/JYD                  | PhoneMail: (312) 245-4662 x4901
Chicago, IL 60611                      |  Internet: U54346@uicvm.uic.edu
From: dourte@IRO.UMontreal.CA (Louis Dourte)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: SIMMS
Date: 15 Apr 92 17:51:41 GMT
Organization: Universite de Montreal


In article <1992Apr14.220654.26420@usenet.ins.cwru.edu>, ai792@cleveland.Freenet.Edu (Tony Lang) writes:
|> 
|>  One question, possibly simple, maybe not.
|> 
|> Can someone explain or direct me to a place where I can find out
|> information about SIMMS, such as specifications and/or usage.
|> The basic question I have is "Do SIMMS require a refresh signal?
|> IE: they are like Static Ram and do not need refresh circuitry"
|> 
|> The reason why I ask is that I have an old computer that uses
|> DRAMS [Which requir a refresh circuit] and was thinking about
|> upgrading it using something that does not require this, such as
|> Static Rams, and then I thought, hey Wait, maybe I can do this
|> with SIMMS.

As far as I know, SIMMs are just a specific type of DRAMs.
--
Louis Dourte
Departement d'informatique et de recherche operationnelle
Universite de Montreal
e-mail: dourte@IRO.UMontreal.CA
Organization: Masters student, Information Networking Institute, Carnegie Mellon, Pittsburgh, PA
Newsgroups: comp.sys.ibm.ps2.hardware
Date: Wed,  8 Apr 1992 00:04:07 -0400 
From: Luis J Mendez <lm2k+@andrew.cmu.edu>
Subject: Survey

	Sorry for the waste of bandwidth...
	My name is Luis Mendez, student  at the Information Networking
Institute at Carnegie Mellon and I am working on a survey for an
Industrial Administration course.  The purpose of the survey is to
collect information regarding the characteristics that industrial
customers look for in a firm from which they plan to buy a product or
service and how those characteristics affect the selection process.  As
area of study, I have chosen computer hardware firms.  It is of my
interest to learn what characteristics are considered by corporations
when deciding from which firm it is desirable to buy computer hardware. 
If any of this netnews' readers is related to hardware purchasing at any
company and would like to participate on this survey, please send me an
email with a fax number where I can reach you, and I will fax you back
the questions and all the information concerning the survey.  Any help
you can bring me  will be really appreciated.  Copies of the team's
final report will be available upon request.  Thanks for your help.

	Luis Mendez
	lm2k@andrew.cmu.edu
From: tholen@galileo.ifa.hawaii.edu (Dave Tholen)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: PS/2 Mod 70-121 Memory Max
Date: 6 Apr 92 09:04:21 GMT
Article-I.D.: news.1992Apr6.090421.14471
Organization: University of Hawaii

FLUHR,ERIC J writes:

>I got a model 70-121 (20MHz 386, 120MB HD) last Christmas.  I was
>under the impression that this computer could take up to 8MB of memory
>on the motherboard.  Recently I opened up the computer to add a SIMM
>chip and was rather astonished to see only 3 SIMM recepticles.  
>Was I wrong, and so does my machine only take 6MB on the system board?

When IBM originally introduced the Model 70, it came in three flavors:
a 16 MHz version, a 20 MHz version, and a 25 MHz version.  The 16 MHz
version had something like a 60 Mbyte hard disk; the other two had 120 Mbyte
hard disks.  Only the 25 MHz version allows 8 Mbytes of memory on the system
board.  The other two allow only 6 Mbytes.

IBM's expansion boards can allow another 8 Mbytes to be added to the system.
The literature on the Model 70 said that the system maximum was 14 or 16
Mbytes, depending on the model, yet third party memory board manufacturers
can put up to 128 Mbytes on an expansion board, and they appear to work.

So I'll raise my own question at this point and ask why IBM says the maximum
is 16 Mbytes when it obviously isn't?  I asked in a recent letter to the
local IBM office why IBM's boards stopped at 8 Mbytes when third party
vendor go past that limit, but I didn't receive a response.  If the third
party boards are 100 percent compatible, then I see no reason to not use
them, but if they are only 99 percent compatible, then what is it that
their board can't do that IBM's can?  I can't help but thinking that if
IBM doesn't do it, they must have a good reason why.
From: ak@ananke.stgt.sub.org (Andreas Kaiser)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: MCA bus speed 
Distribution: world
Date: Sat, 11 Apr 92 13:37:29 GMT


In article <92100.100759U54346@uicvm.uic.edu> U54346@uicvm.uic.edu writes:

  > at 8MHZ no matter what the speed of the  processor. The data transfer in the
  > MCA bus is even more inpressive, it will range any where between 10MB to 20MB
  > per sec on all ps/2 except the 90 and 95. They can double transfer data so they
  > can operate 20-40MB per sec. MOst ISA machines can only do 2-3.5 MMB max so

If IBM's own SCSI cache adapter does not achieve more than 13.3MB/sec
in a 32-bit slot or 6.6MB/sec in a 16-bit slot, what are the
20-40MB/sec numbers really good for? What kind of adapter, if not a
SCSI adapter, profits from a high transfer rate?
  
:::::::::::::::::::: subnet:  ak@ananke.stgt.sub.org
:: Andreas Kaiser :: fidonet: 2:241/7220.9
::::::::::::::::::::
Newsgroups: comp.sys.ibm.ps2.hardware
From: murraya@ecf.toronto.edu (MURRAY  ALEXANDER W)
Subject: Re: SIMMS
Summary: SIMM RAM Type
Keywords: simm, dram
Organization: University of Toronto, Engineering Computing Facility
Date: Thu, 16 Apr 1992 04:08:21 GMT

In article <1992Apr14.220654.26420@usenet.ins.cwru.edu> ai792@cleveland.Freenet.Edu (Tony Lang) writes:
>
> One question, possibly simple, maybe not.
>
>Can someone explain or direct me to a place where I can find out
>information about SIMMS, such as specifications and/or usage.
>The basic question I have is "Do SIMMS require a refresh signal?
>IE: they are like Static Ram and do not need refresh circuitry"

SIMMs are just "DRAMs on a stick" -- refresh required.

>The reason why I ask is that I have an old computer that uses
>DRAMS [Which requir a refresh circuit] and was thinking about
>upgrading it using something that does not require this, such as
>Static Rams, and then I thought, hey Wait, maybe I can do this
>with SIMMS.

You were planning to rework your motherboard?  Ouch.  You'd also be
hard-pressed to find (cheap) SRAM with the same (let alone greater) capacity
as DRAM.  Why do you think DRAMs are used in the first place?  I mean,
static RAM is so much faster -- typically around 20ns access time -- as
opposed to dynamic RAM -- typically from 70-100ns access time (er, RAS-hold
time, did y'all know that?), but dynamic RAM is a lot simpler and therefore
cheaper and easier to manufacture gigantic arrays on a single chip.  16
megabit DRAM chips are being worked with now, with 64Mb chips not so far off
into the future.  

You'd need a new memory controller chip, too, if you're upgrading beyond the
motherboard capacity... egads, just buy a memory expansion board.  Save
yourself the headache.  (Unless this is your idea of Fun, of course.)

-- Alex <murraya@ecf.toronto.edu>
From: devolder@matt.ksu.ksu.edu (Eric DeVolder)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: model 30/8086 hard drive type
Date: 9 Apr 1992 16:18:31 -0500
Organization: Kansas State University
Distribution: usa
NNTP-Posting-Host: matt.ksu.ksu.edu

Title says it all.  does this machine have an mfm or rll hard drive?

-- 
Eric DeVolder                         Actual Consulting Call:
devolder@matt.ksu.ksu.edu                "The Ethernet System is a piece of
KSU Computing and Network Services       crap!" - not sure   2/5/92
Newsgroups: comp.sys.ibm.ps2.hardware,comp.sys.ibm.pc.hardware
From: rstanton@garnet.berkeley.edu (Richard Stanton)
Subject: Big (XGA compatible) displays for PS/2 model 90?
Organization: Haas School of Business, U.C.Berkeley
Date: Tue, 14 Apr 1992 23:54:00 GMT

I have a PS/2 model 90, which has a 14" XGA display, number 8515. This is 
fine in VGA mode, but I plan to upgrade to OS/2 soon, and this monitor is 
basically too small to use in 1024 x 768 mode.

Are there bigger monitors available, or would I do better to change my 
adapter and monitor at the same time? Approximately how much money would I 
be looking at spending for, say, a 16" monitor (and would this be big enough 
for, say, OS/2, Windows and X-Windows applications in high resolution mode?)

Thanks for any suggestions

Richard Stanton
From: ai792@cleveland.Freenet.Edu (Tony Lang)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: SIMMS
Date: 16 Apr 92 22:41:21 GMT
Article-I.D.: usenet.1992Apr16.224121.28522
Reply-To: ai792@cleveland.Freenet.Edu (Tony Lang)
Organization: Case Western Reserve University, Cleveland, OH (USA)


In a previous article, murraya@ecf.toronto.edu (MURRAY  ALEXANDER W) says:
>You were planning to rework your motherboard?
  Well you see, my old computer is a mere Atari 8bit machine.  I have
devised the wireing that would be required to add further ram to the
machine outside of the commercial upgrade kits for the machine.

>hard-pressed to find (cheap) SRAM with the same (let alone greater) capacity
>as DRAM.  Why do you think DRAMs are used in the first place?  I mean,
 I know that SRam is faster, and know that DRAMS have greater capacity,
but all the upgrades for the machine require stacking of Drams and I
said hey, maybe I can just hook up a Simm to it through my controler.

>You'd need a new memory controller chip, too, if you're upgrading beyond the
>motherboard capacity... egads, just buy a memory expansion board.
 Well I already have the chip I'de have to use to controll the extra 
memory, as the machine has 128k already and swaps in the extra 64k in
banks of 16k. I already devised a method of controling the extra ram
and it would be possible for me to add 8 megs to my machine, but why on
such an old computer? [Well this machine is a hackers dream] Already
added Surround Sound y adding 3 sound chips to have 16 channels total.
 Wish they did make an expansion board for it.

Thanks for the info. Now does anyone know where I could find information
on the refresh cycle of chips and that? All the books I have looked at
merely say that Drams require a refresh cycle and the computer has it
installed if it uses dram.

		
-- 
			Welcome to my UnderWaterWorld!
From: rhenrie@emdeng.DaytonOH.NCR.COM (Roland.Henrie)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: IDE drives in Micro Channel PS/2
Date: 9 Apr 92 21:55:01 GMT
Reply-To: rhenrie@emdeng.UUCP (Roland.Henrie)
Organization: NCR, E&M Dayton

I have seen post regarding putting IDE drives in Micro Channel PS/2s.
I have some comments and questions.

Does anyone out there use Arco Electronic's IDE-to-Micro Channel Adapter?
(I am in no ways affiliated with this company.)  Do you have any comments
about the adapter?  How much did you pay for yours?  Is it cost effective?

I have an IDE drive in my AT computer and I see a problem with putting it
into a Micro Channel design.  I am under the impression that all IDE
controllers would share this problem.  The controller and the Floppy disk
controller share one I/O address (3F7 hex on my machine), the diskette
controller uses bit 7 only and the Hard Disk uses bits 0-6 only so no
conflicts exist.  But my PS/2 machine's Diskette controller also defines
bit 0 and reserves all the other bits so there would be a conflict.  How
could an adapter like Arco's above keep this conflict from existing without
changing the BIOS to look at a different address for the hard disk or
supplying a device driver?  That is what they claim, they say they relocate
the I/O address to 2527 hex, but why would the BIOS look there?  Do I have
a non-standard IDE controller?  Is there some new standard I/O address at
252x Hex?  Am I missing something?  (If you don't know don't just say yes:)

Arco's phone number is 305-961-1666, like I said I am not affiliated with
them, I just read a review and started looking into the problem.

Thanks for your responses in advance,
Roland.
-- 
rhenrie@emdeng.DaytonOH.NCR.COM     ||   
NCR of AT&T - E&M Dayton            ||
From: heederik@fwi.uva.nl (Robbert Heederik)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: 9-bit SIMMs or 36-bit?
Keywords: SIMM PS/2 memory
Date: 15 Apr 92 13:35:47 GMT
Organization: FWI, University of Amsterdam


Hello,

I'd like to put some more memory in my model 70, but
what kind of SIMMs do I need? 9-bits or 36-bits?

Details:
	IBM PS/2 model 70-E61
	4MB on the motherboard,
	2MB on an extensioncard, part no. 34F3077

The extra memory should be added to the extensioncard.

de bemmel,		(dutch greeting)
	Robbert

 ________________________________________________________________
| Robbert Heederik               (internet: heederik@fwi.uva.nl) |
|----------------------------------------------------------------|
| my addresses:   Heiligeweg 26/28,1012 XR,Amsterdam,Holland     |
|   ___           Wieger Bruinlaan 78,2132 AX,Hoofddorp, Holland |
|  /__/ /| / /__/ phonenumbers: 020-6383002 or 02503-15590       |
|_/ \__/ |/_/  /_________________________________________________|
Newsgroups: comp.sys.ibm.ps2.hardware
From: ai792@cleveland.Freenet.Edu (Tony Lang)
Subject: SIMMS
Reply-To: ai792@cleveland.Freenet.Edu (Tony Lang)
Organization: Case Western Reserve University, Cleveland, OH (USA)
Date: Tue, 14 Apr 92 22:06:54 GMT


 One question, possibly simple, maybe not.

Can someone explain or direct me to a place where I can find out
information about SIMMS, such as specifications and/or usage.
The basic question I have is "Do SIMMS require a refresh signal?
IE: they are like Static Ram and do not need refresh circuitry"

The reason why I ask is that I have an old computer that uses
DRAMS [Which requir a refresh circuit] and was thinking about
upgrading it using something that does not require this, such as
Static Rams, and then I thought, hey Wait, maybe I can do this
with SIMMS.

		Thanks.
		ai792@cleveland.freenet.edu
-- 
			Welcome to my UnderWaterWorld!
Xref: sparky comp.sys.ibm.ps2.hardware:840 comp.os.os2.misc:11373
From: gb8@prism.gatech.EDU (BEEBE,GARY E)
Newsgroups: comp.sys.ibm.ps2.hardware,comp.os.os2.misc
Subject: SCSI drive interface boards
Keywords: SCSI IBM BOARD
Date: 11 Apr 92 16:07:41 GMT
Followup-To: poster
Organization: Georgia Institute of Technology


I am trying to upgrade my PS/2 Mod 70 E61 hard drive in a cost effective
manner. Megahaus has external SCSI drives for my machine that cost ~$800
for 120MB. This includes the Future Domain SCSI card. Before I lay down
what for me is a sizable chunk of money (i.e. 1/3 cost of a new computer),
I would like to know what the cost/performance tradeoffs are between the
Future Domain, Adaptec and IBM MCA SCSI interface boards. For example, is
the IBM board a 32 bit board? How do the data transfer rates of the boards 
compare? Will booting OS/2 2.0 from the external SCSI take noticably longer
for non-IBM boards versus the IBM SCSI controller? How do the data access
rates compare for between the internal ESDI and external SCSI drives?

Any information and/or personel experiances would be greatly appreciated.

thanks in advance

Gary



-- 
BEEBE,GARY E
Georgia Institute of Technology, Atlanta Georgia, 30332
uucp:	  ...!{decvax,hplabs,ncar,purdue,rutgers}!gatech!prism!gb8
Internet: gb8@prism.gatech.edu
Newsgroups: comp.sys.ibm.ps2.hardware
From: jules@anchor.cs.colorado.edu (Julie DiBiase)
Subject: formatting a disk for 1.7+ MB on an IBM
Organization: University of Colorado, Boulder
Date: Wed, 15 Apr 1992 04:14:09 GMT


Does anyone know how to format a disk in any kind of DOS-running IBM
for 1.7 MB or more?  I have a friend who claims that he has such a 
disk, but he has no idea how it was created.  In order to backup what
is on it, which is in excess of 1.4MB, he needs another disk formatted
similarly.  Thanks for any answers you can provide....

--julie dibiase
jules@cs.colorado.edu
From: IO20081@MAINE.MAINE.EDU (robert eric beckwith)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: ? 2 monitors on mdl80
Date: 9 Apr 92 17:47:17 GMT
Article-I.D.: MAINE.92100.134717IO20081
Organization: University of Maine System

also a question to run two monitors on a model 80
to also debug windows.
can I add the xga card and use my monitor (xga) on it, and
use the on board vga to run another monitor. or is the on
board disabled?????????
..robert
From: ccmk@lure.latrobe.edu.au
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: ** How about 16-bit VGA in a 30-286?? **
Date: 10 Apr 92 13:21:37 GMT
Organization: VAX Cluster, Computer Centre, La Trobe University

In article <17403.29e0618a@ecs.umass.edu>, pugliese@ecs.umass.edu writes:
> Hi all
> 	In light of the recent postings regarding vga on the model 30, I 
> have a similar question regarding the model 30-286.  There is VGA via the 
> system board provided here, but it is only 8-bit video, and hence rather
> slow.   Would I notice an improvement in video speed if I went with a 
> 16-bit VGA card?  Can I do this with this machine and stay out of trouble?
> If so, I am willing to sacrifice on of my 3 slots for a little more speed.

Our on-campus dealer experimented with this and found that a Trident
ET4000 (I think it was) worked fine and effctively disabled the on-board
video.  I guess it just tramps on the IBM VGA video memory with its
own.

Mark Kosten
(ccmk@latrobe.edu.au)