HDTenEightyP/NetNews huggingface dataset:
From: olson@anchor.esd.sgi.com (Dave Olson)
Subject: Re: Transfer Rate of 8mm tape drive
Organization:  Silicon Graphics, Inc.  Mountain View, CA
Date: Tue, 21 Jul 92 07:59:38 GMT

In <1992Jul20.195650.23475@nsisrv.gsfc.nasa.gov> mcquay@ame.gsfc.nasa.gov (Keith McQuay) writes:

| I have been requested to provide some information
| concerning the transfer rate of data from an
| 8mm tape drive (SCSI) on an SGI 4D/340VGX to
| a disk.  I also need to get information on the

The Exabyte drive is rated at 240 Kbytes/sec sustained,
and I've actually gotten pretty close to that; it depends
on how you are writing the tape, or what you are doing with
the data you read.

Obviously disk rates depend a great deal on what drives and
controllers you have, but all of them on SGI systems are
well above 240 Kbytes/sec.

| amount of data that can be stored on a 112m 
| tape.  The 8mm tape drive is an internal drive

Just shy of 2.3 Gbytes, unless you have lots of recovered
errors while writing (since the recovery is basicly a matter
of rewriting the frame), or lots of filemarks, which take
about 2 Mbytes worth of tape, for the long filemarks we use
on the 8200 (the 8500 uses much less tape).

| purchased through SGI.  The original purchaser did 
| not get any information on the drive so I am at a lost.

| I am more interested in the approximate time it would
| take to read a complete 8mm tape to a SEAGATE ST41650.

It won't all fit, if the tape is full, but it will definitely
be gated by read time from the tape, so figure about 2 hours
to fill the disk.

| I can assume there is no one else on the system.  
| Thanks, I would really appreciate anyones help.

You might be better trying comp.sys.sgi for SGI specific
questions in the future; SGI folks are more likely to get
to that earlier in their news reading...
--
Let no one tell me that silence gives consent,  |   Dave Olson
because whoever is silent dissents.             |   Silicon Graphics, Inc.
    Maria Isabel Barreno                        |   olson@sgi.com
Xref: sparky comp.periphs.scsi:3725 comp.sys.next.hardware:1137
From: lee@pipe.cs.wisc.edu (Soo Lee)
Newsgroups: comp.periphs.scsi,comp.sys.next.hardware
Subject: Re: Attaching/removing a SCSI drive on running system
Date: 25 Jul 92 04:27:23 GMT
Organization: U of Wisconsin CS Dept

In article <1992Jul24.140849.3227@kth.se> ragge@nada.kth.se (Ragnar Sundblad) writes:
>In article <1992Jul12.160554.1731@oetl1.scf.lmsc.lockheed.com> Alan
>Strassberg, alan@oetl1.scf.lmsc.lockheed.com writes:
>>	I saw a device to do this the other day - similar to a
>>	data pack, you switch off power, remove drive in caddy,
>>	insert new drive or device. The secret is the caddy and
>>	the technique to make/break contacts using different length
>>	pins.
>
>Is this really a supported and/or safe way of doing it?
>Is it totally clear that a busy scsi bus will not be disturbed
>by the small capacity changes and such that detaching/attaching
>a device will make?
>
>I had another idea, I don't know if it would be hard
>to implemented:
>If it would be possible to make a "transparent" on/off-switchable
>scsi-tranceiver (maybe there are such devices on the market),
>so that one could split the bus into two electrically separated
>buses, the tranceiver could be made to switch on or off only
>when the bus is idle.
>Something like this:
>
><================> main SCSI Bus
>         |
>         |-----------------|
>      +-----+      +----------------+       +---------------+
>      | xvr |<---+-| busy inhibitor |<------| on/off switch |
>      +-----+    | +----------------+       +---------------+
>         |       |       +-------------------+
>         |       +------>| drive pwr control | (<- fancy extra fature)
>         |               +-------------------+
>      <=======> detachable bus     ||
>            |                      ||
>    +------------------+           ||
>    | removeable drive |<============ power
>    +------------------+
>
>What do you think, are there any such "scsi-tranceivers" on the
>market, or could they easily be made? Comments?
>
>/Ragnar Sundblad, Systems engineer

Sure it is possible with some cheap homegrown box. In the diagram, you
assumed that you could detect busy-on-device from SCSI bus. How do you
know how many applications are engaging some files in the disk?
I think you need more than hardware. What I believe is that I need to
run a daemon to do dirty work to mount, unmount, reset SCSI bus, etc.
goes wild. The best shot looks like mirroring from the RAID concept.
IMHO, before making such a box, you need to find out how the daemon
can handle various mishaps wisely since consistency and data integrity
is the first thing (at least for me because I don't want to stay awake
several nights to recover the files).
Of course I am very interested in the project several months later from now!

Soo
lee@cs.wisc.edu
Newsgroups: comp.periphs.scsi
From: cmoore@zenobia.mit.edu (Christopher B. Moore)
Subject: Using audio DAT tapes in data DAT drives.
Organization: MIT Astrophysics
Date: Tue, 21 Jul 1992 23:48:55 GMT


Does anyone have experience using audio DAT tapes in DDS DAT drives?
I'm wondering how minutes of time convert to Mbytes and if audio tapes
are less durable than "data" tapes.


Christopher Moore
cmoore@maggie.mit.edu
From: drowe@zeus.calpoly.edu (Donald H Rowe)
Newsgroups: comp.periphs
Subject: Touch sensitive screens
Date: 31 Jul 92 04:00:35 GMT
Organization: California Polytechnic State University, San Luis Obispo


Hewlett Packard used to make a touch sensitive screen for one (if not more) of
it's computers. I remember seeing it but don't remember much more about it.
I just remember that they had a beam grid over the surface, and you interupted
beams w/ your finger.
These things also show up in airport information terminals. I was wondering if
anyone out there could tell me who makes a screen or peripheral to fit over the
screen like this, and how I could get in touch with someone to see about 
purchasing them. 

Please reply by post or E-mail to drowe@eos.polyslo.edu
Thanx.
  --Don
==========================================================================
Cogito ergo sum. Now if only the reverse were true for those people who
don't think.
==========================================================================
From: berger@atropa (Mike Berger)
Newsgroups: comp.periphs
Subject: Re: Non-aliasing SCSI board for IBM compatibles
Date: 28 Jul 92 15:39:06 GMT
Organization: University of Illinois at Urbana

kistler@iowave.physics.uiowa.edu writes:
>Does there exist an SCSI adapter for IBM compatibles which doesn't do
>sector aliasing?  I've got one now that does aliasing, but I'd like to
>get one that doesn't alias so I could use a utility like SpinRite to
>periodically reformat my drive (regular maintenence, you know).

>I know such adapters do exist, because I have access to a computer that
>has one about which SpinRite doesn't complain.  It's BIOS doesn't announce
>itself on boot, and it's not my computer, so I haven't felt comfortable
>ripping it open to see what's printed on the board.  I'm particularly
>interested in the much heralded Adaptec 1542, but I'm interested in others
>as well.
*----
Non-sequiter.  SCSI deals with sequential sectors, and the physical
disk layout is unimportant, indeed often unknown, to the user.  There
should be no need to periodically reformat a SCSI disk; they're not
handled the same was as MFM, and you're liable to do more harm than
good that way.  The board that spinrite didn't complain about may
well be doing sector translation too.
--
	Mike Berger
	Department of Statistics, University of Illinois
	AT&TNET     217-244-6067
	Internet    berger@atropa.stat.uiuc.edu
Newsgroups: comp.periphs
From: oscar@mi.el.utwente.nl (Oscar ter Hofstede - TUT)
Subject: IBM PC - Irwin Tape Unit question
Organization: Utwente
Date: Wed, 29 Jul 1992 18:05:10 GMT

Hi folks!

A friend of mine asked me to post this question, as he does not
have access to News:

Hello,

A few months ago I bought a tape unit for a cheap price on a computer
exchange.
The tape unit was unused (wrapped in plastic) so I had a rather positive
attitude towards the idea that the machine should work. It was an Irwin
Modelnr: 245, Serialnr: 0050519, Confignr: BH-06.
The tape-unit was accompanied with 2 manuals. One for the Irwin 110&125
series and one for the Irwin 400 series.  As you will understand, no manual
for my tape unit as far as I am able to understand something about
modelnumbers and series numbers. There was also no software included!

Can anyone help me with with the following questions?

1.How should I attach this tape unit to my computer?
Do I need a special card for it? The unit contains a plug which is the same
as on my floppy disks. Can I attach it the same way as a floppy disk?
2.What is the capacity of this tape unit?
3.Which tapes should I use for it?
4.Is there a possibility of getting software for this machine.
5.Are there still manuals available for this thing and where can I get them?

I'd appreciate any information. Thanks in advance.
>>

Please do not post any replies to this group, but rather mail them directly
to me. (I usualy do not read this group).

Thanx!

Oscar.
--
-
--------------------------------------------------------------------------
Oscar ter Hofstede		Tel: +31-53-892778	Fax: +31-53-340045
Faculty of electrical engineering -- University of Twente, The Netherlands
From: davidsen@ariel.crd.GE.COM (william E Davidsen)
Newsgroups: comp.periphs
Subject: Re: Seeking IEEE-488 driver for Unix
Date: 31 Jul 92 16:19:57 GMT
Reply-To: davidsen@crd.ge.com (bill davidsen)
Organization: GE Corporate R&D Center, Schenectady NY

In article <390@carssdf.UUCP>, watson@carssdf.UUCP (- Self Empl. Sys.Integrator) writes:
| WAIT A MINUTE, don't let this thread fall into the email crack!  I wana hear
| this.
| 
| I have been using a PC2A (I think) from National Instrument, a dead bang copy
| of the orriginal IBM 488 card described in the PC Tech Ref Manuals.  I wrote
| a 386 Xenix driver for some HP2608A printers.  Worked OK, but the board is
| no good on the faster computers.  Now I'm kinda stuck, old driver not UNIX
| 3.2.4, old board no good either.  But I've still got half a dozen of these
| printers.  Oh yes, you need to do secondary addressing for commands, this
| is not a real simple interface.

  Our industrial control guys tell me that they got their drivers for
SCO ODT from National Instruments. For about $200.

-- 
bill davidsen, GE Corp. R&D Center; Box 8; Schenectady NY 12345
	It never ceases to amaze me that otherwise rational people, able to
	understand calculus, compound interest, and the income tax form, can
	continue to believe that poker is a game of chance.
Newsgroups: comp.periphs
From: lemek@egr.msu.edu (John P. Lemek)
Subject: Re: Touch sensitive screens
Originator: lemek@eecae.ee.msu.edu
Reply-To: lemek@egr.msu.edu (John P. Lemek)
Organization: Michigan State University
Date: Fri, 31 Jul 92 14:56:34 GMT

In article <1992Jul31.040035.151859@zeus.calpoly.edu> drowe@zeus.calpoly.edu (Donald H Rowe) writes:
>
>Hewlett Packard used to make a touch sensitive screen for one (if not more) of
>it's computers. I remember seeing it but don't remember much more about it.
>I just remember that they had a beam grid over the surface, and you interupted
>beams w/ your finger.
>These things also show up in airport information terminals. I was wondering if
>anyone out there could tell me who makes a screen or peripheral to fit over the
>screen like this, and how I could get in touch with someone to see about 
>purchasing them. 
>
>Please reply by post or E-mail to drowe@eos.polyslo.edu
>Thanx.
>  --Don
>==========================================================================
>Cogito ergo sum. Now if only the reverse were true for those people who
>don't think.
>==========================================================================

First, you might wish to look at Byte's July '92 magazine.  There is a very
good overview article on touch screen technology.  Here are a couple of
addresses of companies which carry touch screens.

MicroTouch Systems, Inc.
55 Jonspin Rd.
Wilmington, MA 01887
(508) 694-9980

Edge Technologies Corp.
3531 Ryder St.
Santa Clara, CA 95051
(408) 886-3688

Automated Control Concepts Inc.
3535 Route 66
Neptune, NJ 07753
(908) 922-6611

Elographics
105 Randolph Rd.
Oak Ridge, TN 37830
(615) 482-4100


I hope this helps.

+---------------------------------+-----------------------------------------+
| John P. Lemek                   | The Standard Disclaimer                 |
| lemek@egr.msu.edu               |                                         |
| lemek@cps.msu.edu               |                                         |
+---------------------------------+-----------------------------------------+



Xref: sparky comp.periphs:1033 comp.periphs.printers:2229 alt.folklore.computers:11246 comp.misc:2998 comp.sys.ibm.pc.hardware:20410 comp.sys.ibm.hardware:18 comp.sys.dec:4225 comp.sys.dec.micro:403
From: chukran@austin.vnet.ibm.com (Rudy Chukran)
Newsgroups: comp.periphs,comp.periphs.printers,alt.folklore.computers,comp.misc,comp.sys.ibm.pc.hardware,comp.sys.ibm,comp.sys.ibm.hardware,comp.sys.dec,comp.sys.dec.micro
Subject: Re: IBM DisplayWriter III(?)
Keywords: 20ma current loop interfacing problem
Date: 24 Jul 92 23:13:23 GMT
Reply-To: chukran@austin.vnet.ibm.com(Rudy Chukran)
Organization: IBM Advanced Workstation Division

In article <1992Jul18.214951.16040@ccu.umanitoba.ca>, umthom61@ccu.umanitoba.ca (Adam Thompson) writes:
|> I've got someone with an old IBM DisplayWriter III (maybe II, dunno)
|>    Text deleted
|> I'd normally just hook it up, and write a software driver for it... no
|> problem.  Guess what?  IBM printers that old use 20ma current loops for
|> interfaces!
No problem?!!!   Dont expect to pump ASCII to these and expect readable
text to come out.   I helped write on layer of the driver for this machine.
It was hard in 1980.   It hasnt gotten any easier in 12 years.
These printers were quite stupid, even compared to an Epson graphic dot matrix.
A clue:  Do you know how to spell EBCDIC ? :-)

Actually I cant remember if the characters it took were EBCDIC or simply
a print wheel position code.  I do recall the Displaywriter stored its
text in EBCDIC.

Give it up.  Perhaps the Smithsonian might be interested:-)
-- 
*********************************************************************
Rudy Chukran                |       EMAIL:            
IBM AIX Technical Consulting| RSCS: CHUKRAN at AUSTIN 
11400 Burnet Rd.            | AWDnet:rudy@chukran.austin.ibm.com    
Internal ZIP 2830           | internet: chukran@austin.vnet.ibm.com
Austin, Texas 78758         |
*********************************************************************
Newsgroups: comp.periphs,comp.periphs.scsi
From: ballard@ferrari.network.com (Dave Ballard)
Subject: MICROPOLIS 1578 FOR SALE
Originator: ballard@ferrari
Organization: Network Systems Corporation
Distribution: mn
Date: Thu, 30 Jul 92 18:32:00 GMT

I have one MICROPOLIS 1578-15 SCSI drive for sale. The drive
is a 330 MB drive and is formated with DOS 5.0.
I'm asking 500.00 plus S/H. You can Email me or call me at:
612-493-1080.

Newsgroups: comp.periphs,comp.realtime,comp.unix.sysv386,sci.electronics
From: chaplin@keinstr.uucp (Roger Chaplin)
Subject: Re: Seeking IEEE-488 driver for Unix
Organization: Keithley Instruments, Cleveland, Ohio
Date: Wed, 29 Jul 1992 17:18:49 GMT

In article <1992Jul28.161655.20881@tropix.uucp> jdc@tropix.uucp (James D Cronin) writes:
>
>We are looking for a driver for IEEE-488 boards from Metrabyte
>that use the NEC7210 chip.  Does such a thing exist for any version
>of Unix?  MSDOS?
>
>Any hints, tips, or ideas are appreciated.
>
>Thanks...Jim

Apologies for the post - mail to Jim's address bounced :-(

Jim,

I've sent a copy of your article to one of the applications engineers at
Metrabyte.  His name is Jim Cooney, e-mail: cooney_jim@keinstr.uucp
-- 
Roger Chaplin / Instruments Division Engineering / "Worry does not empty
chaplin@keinstr.uucp / CI$: 76307,3506          / tomorrow of sorrow -
#include <disclaimer.h>                        / it empties today of strength."
#include "disclaimer.h" /* cover all bases */ /               - Corrie ten Boom
Xref: sparky comp.periphs:1043 comp.realtime:916 comp.unix.sysv386:12604 sci.electronics:13581
From: jack@admin.mport.COM (Jack Craig)
Newsgroups: comp.periphs,comp.realtime,comp.unix.sysv386,sci.electronics
Subject: Re: Seeking IEEE-488 driver for Unix
Date: 29 Jul 92 19:19:15 GMT
Followup-To: comp.periphs
Organization: Microport Inc., Scotts Valley, CA 95066 US of A

jdc@tropix.uucp (James D Cronin) writes:


>We are looking for a driver for IEEE-488 boards from Metrabyte
>that use the NEC7210 chip.  Does such a thing exist for any version
>of Unix?  MSDOS?

i've seen a board/driver for sco unix by national instruments.
they're in texas somewhere; sorry i dont have a number. start
in houston, then dallas; you should find them easy, they're big.

also IOtech in cincinatti may have this kind of product.

i would have thought your unix vendor would have the most known choices.

jack...

=============================================================================
 Jack Craig               Aptos, California, 95003  
 Software Horizons,Inc.   408-684-1375    uunet!sco.com!blznrzn!jack    SVR32
 Microport                800-FOR-UNIX    uunet!mport.com!jack          SVR40
=============================================================================
>Any hints, tips, or ideas are appreciated.

>Thanks...Jim

>-- 
>	James D. Cronin			jdc@tropel.gca.com
>	GCA/Tropel Division 		{rit,uunet!gca}!tropix!jdc
>	60 O'Connor Rd.   Fairport, NY 14450	
>	716-388-3508	    FAX 716-377-6332
Organization: Penn State University
Date: Wed, 22 Jul 1992 11:02:10 EDT
From: <SPW103@psuvm.psu.edu>
Newsgroups: comp.periphs.printers
Subject: Postscript to non-ps HPIII

Hello..
       I've found that I've got to do some printing in postscript. I've got
an MSDOS system (386 and 486) and an HP LaserJet III _without_ a postscript
card.  I only really need postscript for about a month or so, so I cant really
justify buying the Postscript card for the printer.  But it seems to me that
there are software interpreters that can print high-quality postscript to
the laserjet with out added hardware.  Speed is not a problem.  I'm pretty
sure this software exists, but I CAN'T REMEMBER THE NAME!  So if anybody can
give me any info on the software packages, it would be much appreciated!

                               Thanks.

                                      Stephen Walker
                                      Penn State University
                                      spw103@psuvm.psu.edu
From: bshaw@bobasun.hc.ti.com (Bob Shaw)
Newsgroups: comp.periphs.printers
Subject: need printcap for a TI2115 printer please
Date: 24 Jul 92 20:02:59 GMT
Organization: Texas Instruments


Hi
I'm in need for a printcap file for a TI2115 laser printer 
to go on a Sun SS1 .

Thanks in advance

Bob
bshaw@hc.ti.com
Organization: Penn State University
Date: Tue, 28 Jul 1992 15:33:35 EDT
From: Peter Parisi <PXP8@psuvm.psu.edu>
Newsgroups: comp.periphs.printers
Subject: re: refilling DeskJet double-cap. reservoir

Has anyone tried drilling a small hole for refilling in the top of these
double capacity ink capsules?  Instructions on refilling the single capacity
types speak of drilling out the existing hole to a larger size.  If the
basic design is the same--foam block inside--I don't know why drilling a
hole wouldn't work.  However, there is some reference in the sales
literature to a pressurized gizmo inside.  Maybe that would pose a problem.
But, again, has anyone tried it?
From: brennan+@pitt.edu (David P Brennan)
Newsgroups: comp.periphs.printers
Subject: Re: Print Extenders
Date: 25 Jul 92 19:28:42 GMT
Organization: University of Pittsburgh

In article <1992Jul25.182054.2631@bronze.ucs.indiana.edu> duncan@loris.cisab.indiana.edu (Shan Duncan) writes:
>
>Has anyone used these print extenders that claim you can move your
>printer 300 feet away using telephone cable?
>
>We are considering this as a method for moving our printer away
>from our unix workstation (ibm rs6k) into another room so people
>on the network do not have to march into the room to pickup
>printouts.  For around $90 it seemed cheaper than buying a
>ethernet box for our lexmark 4029 10.
>
>
>Suggestions?  Thoughts?  Comments?
>
>
>Thanks you

Yes, we got one of these gadgets, primarily for having a laserjet connected
to a couple of pcs, but the technology is the same. The trick to getting
distance from the system is to have a power supply connected to the box
that's hooked to the printer. It amplifies the signal from down the line so
the printer can use it. If you have a lot of pcs hung on this setup it
sometimes requires a second power supply at the farthest station, but that
won't be a problem for the setup you're using. Our most distant station is
about 170' away and we haven't had any problems.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
David Brennan, Director           Internet: brennan@unix.cis.pitt.edu
School of Nursing Library         Voice:    412-622-4772
                                  FAX:      412-622-7169
St. Francis Medical Center        USnail:   400 45th St. Pittsburgh,PA 15201
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Newsgroups: comp.periphs.printers
From: wct@po.CWRU.Edu (William C. Thompson)
Subject: Redirecting PS printing to a file
Reply-To: wct@po.CWRU.Edu (William C. Thompson)
Organization: Case Western Reserve University, Cleveland, OH (USA)
Date: Wed, 29 Jul 92 12:20:47 GMT


I have a desktop publishing program and an HP3P.  This program
doens't support the 3P, but I do have access to a PostScript
printer via a network.  The access to this printer is rather
complicated, and I can only send a postscript file to it -
i.e. I'm not directly connected.  Word Perfect can create a
postscript file for printing, but the program I'm using 
doesn't allow that option.  I would like to redirect the
printing to a file.  I'm not an idiot, or I could do this if
printing were possible from command-line, but it's not.  I can
only print from within the program, so what I apparently need
is a TSR I load beforehand that can redirect the printing to
a file.  Presumably, this will work.  Does something like this
already exist?  I've got FTP access.

Thanks
-- 
"What do you mean Star Trek isn't real!?" - anonymous
From: skitchen@pilot.njin.net (Scott Kitchen)
Newsgroups: comp.periphs.printers
Subject: Imagewriter compatible with IBM?
Keywords: Apple Imagewriter, IBM, compatibility?
Date: 30 Jul 92 00:36:48 GMT
Organization: Rutgers Univ., New Brunswick, N.J.


Hi, everyone.  I'm not a normal reader of this group, but I've got a
printers problem.  You see, my fiancee is buying my IBM machine, but I
need to keep my printer for my new one.  Now she's already got a
system, but it's an old Apple with an Imagewriter printer.  Is there
some way to make the 2 compatible?

Please mail responses.  If there's enough outcry, I'll even publish a
summary.  Thanks in advance.

Scott
-- 
Scott Kitchen  |  Net.handsome.lug  |  ICBM: 40.88 N  74.56 W
-----------------------------------------------------------------------------
Man is a clever animal who behaves like an imbecile. -- Albert Schweitzer
Newsgroups: comp.periphs.printers
From: duncan@loris.cisab.indiana.edu (Shan Duncan)
Subject: Print Extenders
Organization: Indiana University
X-Newsreader: Tin 1.1 PL4
Date: Sat, 25 Jul 92 18:20:54 GMT


Has anyone used these print extenders that claim you can move your
printer 300 feet away using telephone cable?

We are considering this as a method for moving our printer away
from our unix workstation (ibm rs6k) into another room so people
on the network do not have to march into the room to pickup
printouts.  For around $90 it seemed cheaper than buying a
ethernet box for our lexmark 4029 10.


Suggestions?  Thoughts?  Comments?


Thanks you