HDTenEightyP/NetNews huggingface dataset:
From: massoud@chemteca.sdsu.edu (Massoud Ajami)
Newsgroups: comp.sys.ibm.pc.hardware,comp.sys.ibm.pc.misc
Subject: Re: Memory addressing in protected mode (specifically address pin A20)
Date: 31 Dec 92 22:08:35 GMT
Organization: San Diego State University
NNTP-Posting-Host: 130.191.227.22

In article <1992Dec29.193519.13638@verdix.com> drew@verdix.com (Drew Johnson) writes:
>From: drew@verdix.com (Drew Johnson)
>Subject: Memory addressing in protected mode (specifically address pin A20)
>Date: 29 Dec 92 19:35:19 GMT
>I am trying to run some code on a 'bare' IBM AT board, ie no DOS.  I have
>everything working fine except for one problem:  I cannot get the board
>to recognize address bit 20.  If I access memory at address 0x100000, it
>is the same memory as at address 0x0.  I am switching the board into protected
>mode 'manually', not by using the BIOS function.  Does anybody out there
>know what I have to do to get a PC board to use bit 20 in protected mode?
>On a PS/2, there is a configuration I/O address that you have to write to
>to turn on gate A20 addressing.  I can find no equivalent for the AT.  
>
>Any help would be greatly appreciated.
>
>Drew Johnson
>drew@verdix.com

For AT, it is the keyboard chip output port that controls A20. Bit 1 of this 
port is connected to A20 gate select, and can be accessed with the read/
write port command of 8042 at I/O 0x64.
--
Peace and Prosperity!
  ---==< 110 >==---
Newsgroups: comp.sys.ibm.pc.hardware
From: sheldon@iastate.edu (Steve Sheldon)
Subject: Re: Is there any merit to the 486SX?
Organization: Iowa State University, Ames IA
Distribution: usa
Date: Mon, 28 Dec 1992 22:52:52 GMT

In <1hnr72INNank@darkstar.UCSC.EDU> billk@ucscb.UCSC.EDU (Bill Karwin) writes:


>From my understanding of the 486SX, I thought it was a worthless
>scam to sell more chips.  But they seem to be so popular (relative
>to what I would expect) that I'm wondering if I'm missing something.

 Scam is a matter of opinion.  But it is certainly a marketing move to sell
more chips, a move which has succeeded.

>I am under the impression that the 486SX is really a 486DX with
>the FPU disabled.  And the 487SX is really a full 486DX, and when
>it is installed into a 486SX system it bypasses or disables the
>486SX chip.  The combination of 486SX + 487SX is more expensive
>than a 486DX.  This seems like a very inefficient design to me.  :-)

 That appears to be correct.  Although recent 486SX's never had an FPU to be
disabled.  From my understanding, they've retooled the line just to make
these new chips.

>Obviously one wouldn't buy a 486SX + 487SX right off the bat, when
>one could buy a 486DX for less money and the same functionality.
>Or would one?  Has anyone?  Why?

 Obviously if you're buying a 486SX you don't anticipate needing a math
coprocessor, and if you had you'd be buying a 486DX.

>Does the 486SX chip somehow consume less power than a 486DX? (like
>a 486SL does?)  Is it a newer rev of the 486 design?  What is it
>about 486SX hardware that is selling?

 I suppose it does consume less power.  But I really don't know.

 Why is the 486SX selling?  Well it is selling for the same reason that
there were computers sold with 8086 chips without 8087, and 80286 chips
without 80287, and 80386 chips without 80387.  The number of 386 computers
total probably exceeds the number of 80387 chips sold by a factor of at
least ten.

 For the typical user playing games, word processing, normal spreadsheet
manipulation, etc., a math coprocessor isn't going to be worth the money.
It's probably not even going to get any usage.

 That is why the 486SX is selling.  That and the fact that it provides
better performance than a 386 and costs just slightly more.

 I say it's a good thing.  If you don't want one, then don't buy it.  But
personally I'll save $300-400 and not buy something I don't need or want.
-- 
sheldon@iastate.edu                Steve Sheldon
Project Vincent                    ICSS Resource Unit
SCO ODT, Arc/Info, Atlas GIS       2142 Agronomy Hall
                                   Iowa State University
From: peter@global.hacktic.nl (Peter Busser)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: AMD rubbish????
Date: Thu, 24 Dec 1992 00:27:43 GMT
Organization: Global Village 1

Jim_Johnson@abcd.Houghton.MI.US (Jim Johnson) writes:

>number crunching the AMD 386/40 is a better value than the 486DX-33. This
>is due to DMA speed (40MHz vs. 25MHz or 33MHz).

How do you get such high DMA speeds?

Newsgroups: comp.sys.ibm.pc.hardware
From: bryanw@rahul.net (Bryan Woodworth)
Subject: Re: ATI VESA driver supporting 24 BIT COLOR?
Organization: a2i network
Date: Sat, 2 Jan 1993 20:36:09 GMT

Thanks for the information, you two.  VESA does have a spec for 24bit
color; I know, because my last SVGA card, the Genoa 7900 (which suports
24bit color in 640x480) came with a VESA driver and the 24bit color was
supported.

If indeed the ATI could be used up to 16bit color with a VESA driver, I'd
appreciate ATI hurrying up about it and releasing the 16bit VESA driver.  I
just called their BBS in Canada a few days ago and they still have the old
v2.01 VESA driver online, which only supports 8bit color up to 1024x768.

-- 
Bryan Woodworth <bryanw@rahul.net>
Newsgroups: comp.sys.ibm.pc.hardware
From: mccall@mksol.dseg.ti.com (fred j mccall 575-3539)
Subject: Re: Why memory costs doubled
Organization: Texas Instruments Inc
Date: Thu, 31 Dec 1992 19:31:35 GMT

In <palane.725752403@pv7427.vincent.iastate.edu> palane@iastate.edu (Paul A. Lane) writes:

>Apologies to all if they think this arguement has gotten too drawn out,
>but it is interesting and of some relevence.

>In <1992Dec30.191314.7537@mksol.dseg.ti.com> mccall@mksol.dseg.ti.com (fred j mccall 575-3539) writes:

>>>IBM and Micron Technology, though there's been rumors of TI working on
>>>high density chips. 

>>IBM only makes DRAM for their own systems, so I wasn't counting them.
>>TI, on the other hand, does sell DRAM (and is currently the largest
>>domestic producer, I think -- I don't know, though; I do weapons, not
>>chips). 

>I had heard that IBM was planning on selling components to other computer
>makers, including their SLC processors. If not the current densities, I'm
>almost certain that they'll be selling 16MB chips. Economies of scale 
>argue in favor of such an arrangement.

There is some question as to whether this would be violating the
spirit (if not the letter) of the IBM licensing agreement with Intel,
which requires that IBM only sell processors that are on boards (with
the intent being that they would only sell them on IBM motherboards).
IBM is reportedly planning to sell the CPU chips on little tiny
daughter cards that just plug into the CPU slot on other motherboards.

That's all rumour, of course.  I don't work for IBM or Intel, so I
wouldn't know.

-- 
"Insisting on perfect safety is for people who don't have the balls to live
 in the real world."   -- Mary Shafer, NASA Ames Dryden
------------------------------------------------------------------------------
Fred.McCall@dseg.ti.com - I don't speak for others and they don't speak for me.
Newsgroups: comp.sys.ibm.pc.hardware
From: lcd@ais.org (Leon Dent)
Subject: Re: Should WD Caviar 2200 be noisy? - FOLLOWUP
Organization: UMCC
Date: Tue, 29 Dec 1992 09:13:43 GMT

I used to run a WD 170 meg IDE drive ( I forget the number).  It used to
make a soft clicking sound every now and then.  It was much nicer than
what I'm running now (a ST277R which enters annoying whining mode much
too often).

I'm thinking about getting another WD IDE drive ( the 200 megger).
Can someone compare the noise level between the WD 170meg and the 200meg.

(I don't want to spend $400 to put in another noisy drive).

Leon Dent
lcd@ais.org

Newsgroups: comp.sys.ibm.pc.hardware
From: acmrlb@gsusgi2.gsu.edu (Ronald L. Bolin)
Subject: Re: Quantum 105 write protected
Organization: Georgia State University
Date: Tue, 29 Dec 1992 13:27:35 GMT

I had this happen with a disk compression program. Once I went past the
disks capacity it marked the driver read-only. I could not get it back
to normal with the most popular disk utilities. Fixed the problem by
re-formating the disk. 

Let me know if you find out how to remove the write protect tab off
you hard disk any other way.  That is exactly what DOS and the
popular disk utilies told me "remove the write protect tab from your
C drive". What write protect tab?

Newsgroups: comp.sys.ibm.pc.hardware
From: schao@monet.uwaterloo.ca (Stewart Chao)
Subject: Jumper settings for WD1003V-MM2 and ST11M/R needed
Organization: University of Waterloo
X-Newsreader: TIN [version 1.1 PL8]
Date: Wed, 23 Dec 1992 18:45:02 GMT

Firstly, thanks very much to the people who sent me info about the jumpers
for the WD1003-WA3.

Well it seems there are different WD1003 MFM controllers.  I need jumper
settings for the WD1003V-MM2.  The jumper layout is like this:

           . . . . 8
         1 . . . . 7
              W1
                                              1 2
                                           W3 . .
                                           W4 . .
                                           W5 . .
                                              1

I can't find a W2 on the board.  Also there is a sticker on the back
WD1003V-MM2 F002 X8   Made in Ireland.  (I never heard of any computer
components made in Ireland!?)

Also info for the Seagate ST11M/R (or R/M) would be appreciated.  (some
one must have something for that one)

Stewart Chao
Merry Christmas
Newsgroups: comp.sys.ibm.pc.hardware
From: mskreis@iastate.edu (Mark S Kreisberg)
Subject: Info wanted on Talon TA-200 CD-ROM (really Texel?) from HDI
Organization: Iowa State University, Ames, IA
Date: Sun, 27 Dec 1992 20:19:40 GMT

I'm interested in any information available on the Talon TA-200 CD-ROM from
Hard Drives International.  The salesman that I spoke with claims that this
drive is actually the Texel drive with the following specs.:
	*  265 ms access time
	*  300KB transfer rate
	*  64K buffer.

Can anyone confirm this?

Also, any information on this drive's performance is more than welcome.

I would like to use the drive through OS/2 - any first hand experience out
there?

Thanks for all future comments!

Mark K
-------------------------------------------------------------------------------
mskreis@iastate.edu
Newsgroups: comp.sys.ibm.pc.hardware
From: ntaib@silver.ucs.indiana.edu (Iskandar Taib)
Subject: Re: Motherboard layers
Organization: Indiana University
Date: Mon, 21 Dec 1992 21:01:34 GMT

In article <1992Dec11.133056.18033@pts1.pts.mot.com>
>ep522jc@pts.mot.com writes: >When they spec how manys "layers" a PC
>board is made of, they are talking about the >signal traces on the
>boards.  You've seen PC boards that have the circuit signal traces
>running both on the top and botom...this would be a two layer board.
>ie two copper >layers seperated by PC board material.  A four layer
>board is simply four layers of >copper that signals can be run on.  >


I've always wondered how they manage to "solder" things onto the 
embedded layers.







-- 
-------------------------------------------------------------------------------
Iskandar Taib                          | The only thing worse than Peach ala
Internet: NTAIB@SILVER.UCS.INDIANA.EDU |    Frog is Frog ala Peach
Bitnet:   NTAIB@IUBACS                 !
Newsgroups: comp.sys.ibm.pc.hardware
From: mem28103@uxa.cso.uiuc.edu (M. Munoz)
Subject: Drivers for CHIPS SVGA 82C452 chipset
Organization: University of Illinois at Urbana
Date: Wed, 30 Dec 1992 19:51:53 GMT

Hello!

I was wondering if there is an ftp site that carries Win 3.1 SVGA
drivers for the Chips and Technologies 82C452 SVGA chipset.  I know that
Win 3.0 drivers exist at wuarchive but Win 3.1 drivers don't seem to be
anywhere.  Any ideas?

Marc Munoz
mem28103@uxa.cso.uiuc.edu

Thanks!

Organization: Junior, Electrical and Computer Engineering, Carnegie Mellon, Pittsburgh, PA
Newsgroups: comp.sys.ibm.pc.hardware
Date: Wed, 23 Dec 1992 16:10:02 -0500 
From: "Timothy L. Nali" <tn0s+@andrew.cmu.edu>
Subject: Usefulness of EISA

I planning on buying a 486dx2/66 with VESA local bus video and hard
drive controller.  I also seen systems in which the other slots are
EISA.  Since I'm getting local bus already, what will I gain with EISA?

Also, I'm thinking about a 17 inch monitor.  However, I have all these
cool games that run in 300x200x256.  Does that mode look o.k. on a 17
inch monitor, or will it look too blocky?  



_____________________________________________________________________________
 
 Tim Nali            \  "We are the music makers, and we are the dreamers of
 tn0s@andrew.cmu.edu  \   the dreams" -Willy Wonka and the Chocolate Factory


Newsgroups: comp.sys.ibm.pc.hardware
From: bennett@areaplg2.corp.mot.com (Steve Bennett)
Subject: ESDI vs. IDE
Organization: Motorola, CCR&D, CORP, Schaumburg, IL
Date: Mon, 28 Dec 1992 15:48:16 GMT

I have an 360 meg ESDI drive with no Comtroler. What my question is is it worth
buing a ESDI controller or should I just junk the drive and buy an IDE
controller and an IDE drive. Also can any one recomend a ESDI controller that
has a scsi connector on ir so I can connect a scsi device to it in the future. I
have a WD7000 controller from Western Digital which has this capibility which I
pulled out of an old apollo work station, However I do not seem to be able to
get it to work in a PC.


-- 

#
# Steve Bennett (bennett@mot.com)
#
Newsgroups: comp.sys.ibm.pc.hardware
From: ntaib@silver.ucs.indiana.edu (Iskandar Taib)
Subject: Re: The maxtor 213 meg drive is NOT 213 megs!
Organization: Indiana University
Date: Thu, 24 Dec 1992 19:21:17 GMT

In article <BzqGpG.Kqu@utdallas.edu> goyal@utdallas.edu (MOHIT K GOYAL) writes:

>>I thought most manufacturers put down the UNformatted capacity of the drive?
>>>Is the Quantum 240LPS really a 240MB drive, by the way?

Does "unformatted capacity" still make sense in this day of IDE? I always
thought that it was about 50% greater than the formatted capacity (eg. IBM's
HD floppies are marked 2MB) though in this day the use of zone formatting 
would increase the formatted:unformatted capacity ratio.

>My Maxtor 7120A is advertised as a 130meg hard drive and formats out to
>129,931,264 bytes.  Maybe it has something to do with drives around 200megs?


Ummm.. divide 129,931,264 by 1024x1024. 






-- 
-------------------------------------------------------------------------------
Iskandar Taib                          | The only thing worse than Peach ala
Internet: NTAIB@SILVER.UCS.INDIANA.EDU |    Frog is Frog ala Peach
Bitnet:   NTAIB@IUBACS                 !
From: rsl11@kuhub.cc.ukans.edu
Newsgroups: comp.sys.ibm.pc.hardware
Subject: EGA & VGA EMULATOR SOFTWARE FOR HERCULES GRAPHICS CARD
Date: 29 Dec 92 05:53:12 CST
Organization: University of Kansas Academic Computing Services

Hello there,

	Is there any program that simulates EGA or VGA for an MGA monitor and
Hercules Graphics card?

	I would appreciate any relevant response.

Feel free to send mail to
RSL11@kuhub.cc.ukans.edu
From: bob@lion.inmos.co.uk (Bob Green)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: HELP - need info on WD1003 card
Date: 22 Dec 92 12:05:52 GMT
Organization: INMOS Limited, Bristol, UK


Hi,

I have a Western Digital WD1003-WA2 Hard/Floppy disk controller card that
I'd like to put to use in my PC as a second disk controller. I have no
manual for it and so need someone to tell me what all the jumpers do.
Specifically, I'd like to change the board address and the interrupt
number.

Thanks for listening...

-Bob
| Bob Green          Inmos Ltd, Bristol       bob@inmos.co.uk
|                                         or  bob@inmos.com        
|The opinions above are the rantings of a madman and therefore could
|not possibly reflect Inmos policy.     
Newsgroups: comp.sys.ibm.pc.hardware,comp.sys.mac.hardware,comp.os.ms-windows.advocacy
From: jerry@msi.com (Jerry Shekhel)
Subject: Re: "Windoze" slow? Naah...Re: pc and mac: was RE: 486 and mac benchmarks
Followup-To: comp.sys.ibm.pc.hardware,comp.sys.mac.hardware,comp.os.ms-windows.advocacy
Organization: Molecular Simulations, Inc.
Date: Tue, 22 Dec 1992 21:12:16 GMT
X-Newsreader: TIN [version 1.1 PL8]
X-Posted-From: hemi.msi.com
NNTP-Posting-Host: sol.ctr.columbia.edu

Yamanari (rsrodger@wam.umd.edu) wrote:
:
: >From what I HEARD (I don't know myself for sure) the '040 are all
: >clock doublers.
:
: 	Lemme guess?  You heard it here.  Well, wrong.
:  
: 	Nuff said.  Motorola does not make *any* clock doubled
: 	chips.  The 68040 is faster than the '486 at the same clockspeed
: 	because it's *faster*--it executes a lot more instructions at the
: 	1 cycle/per rate than the i486.
:

Then how come Motorola has boasted "50MHz internal operation" in an '040
advertisement?
--
+-------------------+----------------------------+---------------------------+
| JERRY J. SHEKHEL  | Molecular Simulations Inc. | Time just fades the pages |
| Drummers do it... |     Burlington, MA USA     | in my book of memories.   |
|    ... In rhythm! |        jerry@msi.com       |         -- Guns N' Roses  |
+-------------------+----------------------------+---------------------------+
Newsgroups: comp.sys.ibm.pc.hardware,comp.sys.ibm.pc.soundcard,rec.music.synth,comp.music
From: Espo@cup.portal.com (STEVEN MICHAEL ESPOSITO)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: ATI VESA driver supporting 24 BIT COLOR?
Date: Thu, 31 Dec 92 16:41:23 PST
Organization: The Portal System (TM)

Can anyone tell me where I can get the beta drivers (build 50) I think
for the ATI ultra plus. FTP would be the perferred method.

thanks

espo@cup.portal.com
Newsgroups: comp.sys.ibm.pc.hardware,comp.sys.ibm.pc
From: Zhang.Hao@launchpad.unc.edu (zhang hao)
Subject: Need parameters and jumper settings for Conner CP30104H
Organization: University of North Carolina Extended Bulletin Board Service
Date: Tue, 22 Dec 1992 02:16:46 GMT


Hi,

I recently bought a third hand connect cp30104H hard drive.  But I don't
have any parameters and jumper settings (for primary or slave). Does 
anyone know anything about this drive? What is the speed rateing for it?
Is it really a IDE 120 MB drive?

Does anyone know the phone number for Conner support? 

Thanks for any help.

Hao
--
   The opinions expressed are not necessarily those of the University of
     North Carolina at Chapel Hill, the Campus Office for Information
        Technology, or the Experimental Bulletin Board Service.
           internet:  laUNChpad.unc.edu or 152.2.22.80
From: d2henan@dtek.chalmers.se (Andreas Henning)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Trouble with WD-7000ASC and Gravis UltraSound
Date: 30 Dec 92 14:36:48 GMT
Organization: Chalmers University of Technology, Gothenburg Sweden
X-Newsreader: NN version 6.4.19

A friend of mine is having lots of trouble installing a Gravis
UltraSound in his machine. The trouble is the WD-7000ASC
SCSI card, which uses the same memory addresses.
He can't get it to work even if he changes IRQ and Port Address
on the GUS. (IRQ 3,5,11) and Port Base Address (220h-260h) .

Has anyone had similar experience with the GUS or any other card?
He gets strange Memory Parity Errors all the time.

Thanks in advance,

Andreas Henning -- d2henan@dtek.chalmers.se
		   Chalmers University of Technology
From: kgallagh@digi.lonestar.org (Kevin Gallagher)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: is CMS trakker 250mb tape backup for real
Date: 2 Jan 93 19:23:57 GMT
Organization: DSC Communications Corp, Plano, TX

In article <rreiner.725841329@yorku.ca> rreiner@nexus.yorku.ca (Richard Reiner) writes:
>hwrvo@kato.lahabra.chevron.com (W.R. Volz) writes:
>
>>Someone mentioned that the Colorado 250 mb tape backup
>>was really a 125mb tape system with compression software
>>and CMS hoped to get 2:1 compression. Is this for real??
>>If so, why can't I buy a CMS 125mb drive and use Norton
>>Backup to get the same thing.
>
>Probably because the 125 is really a 60MB drive with data compression
>software...
>
>This appears to have become standard practice in the PC tape drive
>industry.  IOMega sells a series of "250" drives that use DC2120 -- i.e.
>120MB -- tapes, with a bundled copy of Central Point Backup doing the
>compression.  Irwin and CMS label their stuff the same way.

The Jumbo 120 and Jumbo 250 use different encoding schemes on the tape.  The
250 encoding scheme succeeds in squeezing about 125 MB of data onto a DC2120
tape.  The Jumbo 120 can get about 60 MB of data onto a DC2120.  

If you turn on software compression when you write to tape, the actual amount
of compression depends upon the file mix you have on your hard disk.  If you
have mostly ascii text files on your disk, you will most likely see more than
2:1 compression.  If you have mostly binary files, you will see quite a bit
less than 2:1 compression.  If you have mostly compressed zip files on your
hard disk, the tape compression software will not succeed in reducing things
very much, at all!

The industry advertising standard is to assume 2:1 software compression when
specifying tape drive capacities.  

I usually see about a 1.7:1 to a 1.8:1 compression ratio when I back up my
hard disk using either the CMS Backup software or Central Point Backup.  I
suspect that this is typical.
-- 
----------------------------------------------------------------------------
Kevin Gallagher        kgallagh@digi.lonestar.org OR ...!uunet!digi!kgallagh
DSC Communications Corporation   Addr: MS 152, 1000 Coit Rd, Plano, TX 75075
----------------------------------------------------------------------------
From: aland@informix.com (Colonel Panic)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: The Death of x86 Arch. ?
Date: 30 Dec 92 06:41:35 GMT
Organization: Helen Keller Bondurant's Performance Driving School for the Blind

In article <1992Dec30.032305.21871@netcom.com> timbol@netcom.com (Mike Timbol) writes:
>In article <1992Dec29.234248.28259@informix.com> aland@informix.com (Colonel Panic) writes:
>>In article <1gqsv5INNiel@hpscit.sc.hp.com> matthias@nsr.hp.com (Matthias Kamm) writes:
>>>Imagine this:
>>>You're "upgrading" operating systems and currently use MSDOS 5.0
>>>and want to keep the investment you've made in PC s/w safe. Will you 
>>>run your software on an x86 platform, or buy a "PC" running windows
>>>NT with an Alpha processor, say, with 10x the computing power!  I'd 
>>>BAG the antiquated x86 family and go with RISC.
>>
>>Eh?  You're expecting to run your x86 DOS 5.0 executables on an Alpha
>>machine running NT?   What else did you ask Santa for this year?
>
>Actually, this will work, provided the application doesn't directly access
>the hardware (as many games do).  But for things like WordPerfect and
>Lotus 1-2-3, there shouldn't be any problem.

If you're saying that NT on Alpha will be running as an x86 emulator,
then 1) that surprises me, and 2) I would then dispute the "10x the computing
power" figure quoted by Mr. Kamm.  

Plus, I think you're seriously underestimating the number of DOS apps that
directly access hardware.  Also, any of *those* applications should run
just fine in DOS-under-UNIX implementations *today*.  So, what exactly
is the NT advantage?

--
Alan Denney      aland@informix.com      {pyramid|uunet}!infmx!aland

"The mist clung to the mountain the same way a thirteen-year-old girl clings
 to her boyfriend, although the mountain wasn't thinking about "getting lucky."
                                 (1990 Bulwer-Lytton Fiction Contest entry)