Linux-Hardware Digest #762, Volume #12 Fri, 28 Apr 00 10:13:07 EDT
Contents:
need advice for a intranet linux server ("Guilom")
3com 3CCFE575CT vs 3CCFE575CT (Bernard PERROT)
3CCFE575CT vs 3CCFE575BT (Bernard PERROT)
Re: Ultra-DMA 66 in Linux ????? (gos)
Re: Kodak 4804 CD RW (Mogens Kjaer)
Re: need advice for a intranet linux server (Mogens Kjaer)
Voodoo3 and SVGATextMode (Jacek =?iso-8859-2?Q?Pop=B3awski?=)
Re: Linux on a Z-100??? (Lew Pitcher)
Re: HPDeskjet 720C, how do i get it doing anything at all? (Pal Dahle)
Re: HPDeskjet 720C, how do i get it doing anything at all? (Pal Dahle)
Re: HPDeskjet 720C, how do i get it doing anything at all? (Pal Dahle)
Re: need advice for a intranet linux server ("Guilom")
Re: need advice for a intranet linux server (Mogens Kjaer)
XDM Problems? ("Roaster")
Re: VFS: Cannot open root device 08:01 (Markus Grabner)
Re: VFS: Cannot open root device 08:01 (Markus Grabner)
Moxa COMpad 32b question ([EMAIL PROTECTED])
Re: Config HP LaserJet 4500 with RH v6.2? (Joshua Baker-LePain)
Re: UFS on CD-R under linux? (Eric)
Re: How to get Mandrake 7.0 kernel 2.2.13 to recognize tape drive (t_truett)
Hardware RAID and Linux ("M. Dessolis")
Hardware RAID and Linux ("M. Dessolis")
Re: Modem (Rohit Samson Dean)
Re: Floppy format problem. ("Charles Sullivan")
Re: help: Can't print to 2nd port of HP JetDirect EX Plus3 (Mark Paulus)
----------------------------------------------------------------------------
From: "Guilom" <[EMAIL PROTECTED]>
Subject: need advice for a intranet linux server
Date: Fri, 28 Apr 2000 11:09:53 GMT
I have to buy and install a small intranet server (max 60 client):
This describe what hardware i plan to buy (OS: RH 6.2):
I prefer to have a 'standard' configuration, because i don't want to spend
time for installation.
Motherboard: AsusP3-BF
Ram: 256 Mo
SCSI Adapter: Adaptec 2940 UW
HardDrive and CD: SCSI.
graphic card: a basic ATI model
ethernet adapter: a PCI 10/100 but i don't know which one?
i have a lot of DLink530TX on NT machine who works very well, but i'have see
in the RedHat Supported HardWare list thet this adapter was only 'level2
support', should i be afraid of it for the installation or the exploitation
if i buy this kind of card. Are 3com better? which model?
Thank You very much for experienced user with Linux HardWare, and excuse my
poor english...
Guilom.
--
_
------------------------------
From: [EMAIL PROTECTED] (Bernard PERROT)
Subject: 3com 3CCFE575CT vs 3CCFE575CT
Date: 28 Apr 2000 11:26:57 GMT
Reply-To: [EMAIL PROTECTED]
Hello,
On my Dell Inspiron 5000, a PC card 3com 3CCFE575CT don't works, but a
3CCFE575BT works...
It's the same driver (from pcmcia-cs-3.1.13), 2.2.14 kernel (RH6.2).
Any idea ?
------------------------------
From: [EMAIL PROTECTED] (Bernard PERROT)
Subject: 3CCFE575CT vs 3CCFE575BT
Date: 28 Apr 2000 11:44:12 GMT
Reply-To: [EMAIL PROTECTED]
Hello,
On my Dell Inspiron 5000, a PC card 3com 3CCFE575CT don't works, but a
3CCFE575BT works...
It's the same driver (from pcmcia-cs-3.1.13), 2.2.14 kernel (RH6.2), and
this card is supposed to works...
Any idea ?
------------------------------
From: gos <[EMAIL PROTECTED]>
Subject: Re: Ultra-DMA 66 in Linux ?????
Date: Fri, 28 Apr 2000 13:45:31 +0200
==============2486DA2DE9C3D79CA59E5AF9
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit
"R.S.I. van Vuren" a écrit :
> Which linux distribution supports Ultra-DMA 66.
> I have now Corel Linux but this doesnot support it.
>
> R. van Vuren
I tried first with OpenLinux 2.3 from Caldera, but I couldn't install it,
Linux wasn't able to recognize the harddisk.
Answer from Caldera:
UDMA66 is currently unsupported in OpenLinux 2.3, and in Linux in
general. In cases where there is no UDMA33 controller to use, like
yours where the motherboard supports only UDMA66, the only option
would be to wait until Linux has full support for this kind of
drive.
Sorry for the bad news.
Caldera Systems Technical Support <[EMAIL PROTECTED]>
So I got a Debian version (Linux Debian 2.0.38)
and when booting, I add the following informations:
linux ide0=0xdc00 ide1=0x1f0 hdc=cdrom
that works!
Good luck!
Etienne
pentium III 500
(hda) harddisk WD U-DMA66 5400T
motherboard BE6 UDMA66 5PCI AGP2X (WD153AA)
HPT366 Ultra DMA 66 Controller
(hdc) Pioneer DVD-Rom DVD-104
carte graphique: Leadtek WinFast SD S325
==============2486DA2DE9C3D79CA59E5AF9
Content-Type: text/html; charset=us-ascii
Content-Transfer-Encoding: 7bit
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
<p>"R.S.I. van Vuren" a écrit :
<blockquote TYPE=CITE>Which linux distribution supports Ultra-DMA 66.
<br>I have now Corel Linux but this doesnot support it.
<p>R. van Vuren</blockquote>
I tried first with OpenLinux 2.3 from Caldera, but I couldn't install it,
Linux wasn't able to recognize the harddisk.
<br>Answer from Caldera:
<br><font size=-1>UDMA66 is currently unsupported in OpenLinux 2.3, and
in Linux in</font>
<br><font size=-1>general. In cases where there is no UDMA33 controller
to use, like</font>
<br><font size=-1>yours where the motherboard supports only UDMA66, the
only option</font>
<br><font size=-1>would be to wait until Linux has full support for this
kind of</font>
<br><font size=-1>drive.</font>
<br><font size=-1>Sorry for the bad news.</font>
<br> Caldera Systems Technical Support
<[EMAIL PROTECTED]>
<p>So I got a Debian version (Linux Debian 2.0.38)
<br>and when booting, I add the following informations:
<br>linux ide0=0xdc00 ide1=0x1f0 hdc=cdrom
<br>that works!
<br>Good luck!
<br>Etienne
<p>pentium III 500
<br>(hda) harddisk WD U-DMA66 5400T
<br>motherboard BE6 UDMA66 5PCI AGP2X (WD153AA)
<br>HPT366 Ultra DMA 66 Controller
<br>(hdc) Pioneer DVD-Rom DVD-104
<br>carte graphique: Leadtek WinFast SD S325
<br>
<br> </html>
==============2486DA2DE9C3D79CA59E5AF9==
------------------------------
From: Mogens Kjaer <[EMAIL PROTECTED]>
Subject: Re: Kodak 4804 CD RW
Date: Fri, 28 Apr 2000 13:37:44 +0200
Roberto Migliorati wrote:
> /dev/cdrom points to /dev/scd0, and no, when it tries to load driver for
> hda (!?!?!?) it can't find any so it's not recognised.
Hm, /dev/scd0 is a SCSI device. Do you run SCSI emulation? You should,
when you
want to use the device as a burner.
Do you have any SCSI devices in the machine? Do you boot from an IDE
harddrive?
If so, hda would be this drive, and the burner hdb or hdc.
Have you made your own kernel?
It could be interesting to see all the lines at boot time, try:
dmesg >tempfile
and post the contents of "tempfile".
Mogens
--
Mogens Kjaer, Carlsberg Laboratory, Dept. of Chemistry
Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
Phone: +45 33 27 53 25, Fax: +45 33 27 47 08
Email: [EMAIL PROTECTED] Homepage: http://www.crc.dk
------------------------------
From: Mogens Kjaer <[EMAIL PROTECTED]>
Subject: Re: need advice for a intranet linux server
Date: Fri, 28 Apr 2000 13:39:35 +0200
Guilom wrote:
....
> i have a lot of DLink530TX on NT machine who works very well
....
This should work with the via-rhine driver.
Mogens
--
Mogens Kjaer, Carlsberg Laboratory, Dept. of Chemistry
Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
Phone: +45 33 27 53 25, Fax: +45 33 27 47 08
Email: [EMAIL PROTECTED] Homepage: http://www.crc.dk
------------------------------
From: [EMAIL PROTECTED] (Jacek =?iso-8859-2?Q?Pop=B3awski?=)
Subject: Voodoo3 and SVGATextMode
Reply-To: [EMAIL PROTECTED]
Date: Fri, 28 Apr 2000 12:18:23 GMT
Anybody set more than 70Hz in textmode on Voodoo3 card? I don't know
where should I find correct clocks to SVGATextMode...
------------------------------
From: [EMAIL PROTECTED] (Lew Pitcher)
Subject: Re: Linux on a Z-100???
Reply-To: [EMAIL PROTECTED]
Date: Fri, 28 Apr 2000 12:17:37 GMT
On 27 Apr 2000 22:36:39 EDT, [EMAIL PROTECTED] (Dances
With Crows) wrote:
>On Fri, 28 Apr 2000 02:01:15 GMT, [EMAIL PROTECTED]
><<8eard4$ean$[EMAIL PROTECTED]>> shouted forth into the ether:
>>I have a Heathkit Z-100 8086 728Kbyte PC. Has
>>anyone gotten Linux to run on this beast? Would
>>greatly appreciate any help.
>
>No one is ever going to get Linux to work on such a beast. You need 4M of
>RAM and a 386 at the very least. You will be better off running an old
>version of DOS and using it as a serial console to your main Linux box if
>you really want to make use of it.
Or installing Minix on it
Lew Pitcher
System Consultant
Toronto Dominion Financial Group
([EMAIL PROTECTED])
(Opinions expressed are my own, not my employer's.)
------------------------------
From: Pal Dahle <[EMAIL PROTECTED]>
Subject: Re: HPDeskjet 720C, how do i get it doing anything at all?
Date: Fri, 28 Apr 2000 14:17:21 +0200
Hi,
The 720C is a PPA printer (Printing Performance Architecture). PPA is a
protocol developed by Hewlett Packard for their series of Deskjet printers
which is not compatible to postscript.
I have installed and tried pbm2ppa which is a piece of software that converts
your outputs to ppa. However it does not work with color yet.
See http://www.httptech.com/ppa/index.html for more information. Extract and
follow the instructions in the README-files closely and you will be able to
print.
Pål Dahle
Goteborg, Sweden
"Martijn P. Glas" wrote:
> Hai,
>
> I'm just recently involved in linux (SuSE 6.4) and enjoying it but i,d like
> to get my deskjet 720C colour printer printing.
>
> can anybody help?
>
> thnx.
>
> Martijn
--
===============================================
Please remove the x:es from my address to reply
------------------------------
From: Pal Dahle <[EMAIL PROTECTED]>
Subject: Re: HPDeskjet 720C, how do i get it doing anything at all?
Date: Fri, 28 Apr 2000 14:17:40 +0200
Hi,
The 720C is a PPA printer (Printing Performance Architecture). PPA is a
protocol developed by Hewlett Packard for their series of Deskjet printers
which is not compatible to postscript.
I have installed and tried pbm2ppa which is a piece of software that converts
your outputs to ppa. However it does not work with color yet.
See http://www.httptech.com/ppa/index.html for more information. Extract and
follow the instructions in the README-files closely and you will be able to
print.
Pål Dahle
Goteborg, Sweden
"Martijn P. Glas" wrote:
> Hai,
>
> I'm just recently involved in linux (SuSE 6.4) and enjoying it but i,d like
> to get my deskjet 720C colour printer printing.
>
> can anybody help?
>
> thnx.
>
> Martijn
"Martijn P. Glas" wrote:
> Hai,
>
> I'm just recently involved in linux (SuSE 6.4) and enjoying it but i,d like
> to get my deskjet 720C colour printer printing.
>
> can anybody help?
>
> thnx.
>
> Martijn
--
===============================================
Please remove the x:es from my address to reply
------------------------------
From: Pal Dahle <[EMAIL PROTECTED]>
Subject: Re: HPDeskjet 720C, how do i get it doing anything at all?
Date: Fri, 28 Apr 2000 14:18:15 +0200
Hi,
The 720C is a PPA printer (Printing Performance Architecture). PPA is a
protocol developed by Hewlett Packard for their series of Deskjet printers
which is not compatible to postscript.
I have installed and tried pbm2ppa which is a piece of software that converts
your outputs to ppa. However it does not work with color yet.
See http://www.httptech.com/ppa/index.html for more information. Extract and
follow the instructions in the README-files closely and you will be able to
print.
Pål Dahle
Goteborg, Sweden
"Martijn P. Glas" wrote:
> Hai,
>
> I'm just recently involved in linux (SuSE 6.4) and enjoying it but i,d like
> to get my deskjet 720C colour printer printing.
>
> can anybody help?
>
> thnx.
>
> Martijn
"Martijn P. Glas" wrote:
> Hai,
>
> I'm just recently involved in linux (SuSE 6.4) and enjoying it but i,d like
> to get my deskjet 720C colour printer printing.
>
> can anybody help?
>
> thnx.
>
> Martijn
--
===============================================
Please remove the x:es from my address to reply
------------------------------
From: "Guilom" <[EMAIL PROTECTED]>
Subject: Re: need advice for a intranet linux server
Date: Fri, 28 Apr 2000 12:24:42 GMT
> > i have a lot of DLink530TX on NT machine who works very well
> ....
>
> This should work with the via-rhine driver.
>
> Mogens
> --
> Mogens Kjaer, Carlsberg Laboratory, Dept. of Chemistry
> Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
> Phone: +45 33 27 53 25, Fax: +45 33 27 47 08
> Email: [EMAIL PROTECTED] Homepage: http://www.crc.dk
>
Thank you very much, is this driver included in the RH6.2 distribution or do
i have to download it somewhere else before the install?
Guilom.
------------------------------
From: Mogens Kjaer <[EMAIL PROTECTED]>
Subject: Re: need advice for a intranet linux server
Date: Fri, 28 Apr 2000 14:32:04 +0200
Guilom wrote:
>
> Thank you very much, is this driver included in the RH6.2 distribution or do
> i have to download it somewhere else before the install?
It's included.
Mogens
--
Mogens Kjaer, Carlsberg Laboratory, Dept. of Chemistry
Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
Phone: +45 33 27 53 25, Fax: +45 33 27 47 08
Email: [EMAIL PROTECTED] Homepage: http://www.crc.dk
------------------------------
From: "Roaster" <[EMAIL PROTECTED]>
Subject: XDM Problems?
Date: 28 Apr 2000 12:51:56 GMT
Hi
Am having trouble booting up in XFree 4.0, since I installed xf4.0 -
whenever I log in from xdm i get a right basic windowmanager (could be wm2
or even something more basic).
BUT, when I kill off xdm and close xwin - then load it up manually with
startx I get the preferred WM of KDE load up.
How is this? what do I do to put it back to KDE from XDM??
And also, I used to use WindowMaker (many installs ago) and think I would
prefer its lighter load (and faster use) than the freindlier but slower
KDE- its just a sinch to re-install that one no?
Cheers
Chris.
------------------------------
From: Markus Grabner <[EMAIL PROTECTED]>
Subject: Re: VFS: Cannot open root device 08:01
Date: Fri, 28 Apr 2000 14:59:21 +0200
Ale wrote:
>
> I get this message on install:
>
> scsi : 0 hosts
> scsi : detected total.
> COMX : driver version 0.82 (C) 1995-1999 ITConsult-Pro Co.
> md.c: sizeof(mdp_super_t) 0 4096
> Partition check:
> hda: hda1 hda2 <hda5 hda6 hda7 hda8 hda9>
> autodetecting RAID arrays
> autorun ...
> ... autorun DONE.
>
> VFS: Cannot open root device 08:01
> Kernel panic: VFS: Unable to mount root fs on 08:01
>
> My Pc is a K7, mobo asus k7m, hd ibm 20,5 ide , g400
>
> Please help me!!!!!
I had the same problem when changing from SuSE-6.2 to SuSE-6.4. The boot
mechanism has been modified and now requires a file to be loaded into
the "initial RAM disk" (initrd). As far as I remember, this file has to
be located in /boot. Not much information, I know, but you might find
more information in the documentation.
Ciao,
Markus
--
Markus Grabner - Computer Graphics and Vision
Graz University of Technology, Inffeldgasse 16/II, 8010 Graz, Austria
Phone: +43/316/873-5041, Fax: +43/316/873-5050
Email: [EMAIL PROTECTED], WWW:
http://www.icg.tu-graz.ac.at/~grabner
------------------------------
From: Markus Grabner <[EMAIL PROTECTED]>
Subject: Re: VFS: Cannot open root device 08:01
Date: Fri, 28 Apr 2000 15:00:53 +0200
Ale wrote:
>
> I get this message on install:
>
> scsi : 0 hosts
> scsi : detected total.
> COMX : driver version 0.82 (C) 1995-1999 ITConsult-Pro Co.
> md.c: sizeof(mdp_super_t) 0 4096
> Partition check:
> hda: hda1 hda2 <hda5 hda6 hda7 hda8 hda9>
> autodetecting RAID arrays
> autorun ...
> ... autorun DONE.
>
> VFS: Cannot open root device 08:01
> Kernel panic: VFS: Unable to mount root fs on 08:01
>
> My Pc is a K7, mobo asus k7m, hd ibm 20,5 ide , g400
>
> Please help me!!!!!
I forgot to mention that the initrd has to contain the appropriate SCSI
driver module.
Markus
--
Markus Grabner - Computer Graphics and Vision
Graz University of Technology, Inffeldgasse 16/II, 8010 Graz, Austria
Phone: +43/316/873-5041, Fax: +43/316/873-5050
Email: [EMAIL PROTECTED], WWW:
http://www.icg.tu-graz.ac.at/~grabner
------------------------------
From: [EMAIL PROTECTED]
Subject: Moxa COMpad 32b question
Date: Fri, 28 Apr 2000 13:01:34 GMT
I'd like to get a dual serial port PCMCIA card for a redhat linux
system (6.1 or 6.2). I checked the hardware compatability list
and saw the COMPAD 32 listed; is this the one that Moxa now
produces?
Does anyone have positive/negative experiences with the Moxa
Compad 32B?
Thanks,
Kenny
Sent via Deja.com http://www.deja.com/
Before you buy.
------------------------------
From: Joshua Baker-LePain <[EMAIL PROTECTED]>
Subject: Re: Config HP LaserJet 4500 with RH v6.2?
Date: 28 Apr 2000 13:17:31 GMT
Steve Snyder <[EMAIL PROTECTED]> wrote:
> I'm getting a HP LaserJet 4500 tomorrow, which I plan on connecting to
> a Linux (RedHat v6.2) box. Can anyone advise me what configuration is
> needed to support this printer?
Nice printer. It's postscript, so just tell printtool that it's a
postscript printer and that it is 600 dpi. Print the two testpages (ASCII
and text), b/c you may need to fiddle with the text options (fix stair
stepping, send EOF).
For our 4000N, we set up two lpd entries -- one sends to the 'raw' remote
queue (for Postscript or PCL), and one sends to the 'text' remote
queue (for text, duh). You may have to do that as well, although I believe
that some of the newer HPs have an 'auto' queue that can tell the difference.
--
Joshua Baker-LePain
Department of Biomedical Engineering
Duke University
------------------------------
From: Eric <[EMAIL PROTECTED]>
Subject: Re: UFS on CD-R under linux?
Date: Fri, 28 Apr 2000 13:05:08 GMT
Reply-To: [EMAIL PROTECTED]
John Rowe wrote:
>
> We're looking for some removable media under linux. CD-R or CD-RW
> seems to be the obvious way to go.
>
> We're not looking to "make CDs" but to store files. If I buy the
> appropriate CD drive, can we just mount a CD-R and write to it using
> cp, etc? My understanding is that UFS is meant to do this but I'm not
> quite sure of its status under linux.
>
> Thanks
>
> John
UFS??, you'll probably have more success looking for UDF instead, since
that is a filesystem intended for CD-RW (and DVD). You can find tarballs
and/or rpm's for this filesystem on the web.
------------------------------
Subject: Re: How to get Mandrake 7.0 kernel 2.2.13 to recognize tape drive
From: t_truett <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.help,alt.os.linux.mandrake,comp.os.linux.questions
Date: Fri, 28 Apr 2000 06:35:58 -0700
I have noticed that you have not received any replies to your
question. If you would like to increase your chances of getting
an answer to your question, then you can do so by posting your
question at www.WorldWideAnswerNet.com.
What is it? WorldWideAnswerNet.com is an information exchange.
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If you have any questions or comments, feel free to send email
to: [EMAIL PROTECTED]
To use the WorldWideAnswerNet.com system, go to:
www.WorldWideAnswerNet.com
* Sent from RemarQ http://www.remarq.com The Internet's Discussion Network *
The fastest and easiest way to search and participate in Usenet - Free!
------------------------------
From: "M. Dessolis" <[EMAIL PROTECTED]>
Subject: Hardware RAID and Linux
Date: Fri, 28 Apr 2000 15:41:47 +0200
Does anyone know if the Adaptec Array 1000SA family adapter works with Linux
or FreeBSD?
Thanks
Marcello
------------------------------
From: "M. Dessolis" <[EMAIL PROTECTED]>
Subject: Hardware RAID and Linux
Date: Fri, 28 Apr 2000 15:41:47 +0200
Does anyone know if the Adaptec Array 1000SA family adapter works with Linux
or FreeBSD?
Thanks
Marcello
------------------------------
From: Rohit Samson Dean <[EMAIL PROTECTED]>
Subject: Re: Modem
Date: Fri, 28 Apr 2000 10:05:37 -0400
Unfortunately YES (if by winmodem you mean software modem)!
If you are planning to buy one and are hoping to use it with Linux then
forget it. Invest in some standard exterrnal Hardware Modem. Please note
that all External Modems may not be standard Hardware modems.
Here are some things which I found during my hopeless quest to make my
"Riptide" modem to work with RH 6.2 distribution. Its chipset is a
cousin of the Conexant (nee Rockwell) HCF family. Read on if you are
interested..
Any modem with HCF refers to the "Host Controlled Family".
Normally there are 4 components in a modem
* Digital Signal Processor Data Pump (DSP)
* Modem/Micro Controlloer Unit (MCU),
* Bus Controller Unit (PCU in case of PCI Bus Controller Unit)
* A Line Codec
Traditionally, all 4 components would be implemented in Chips, and/or
circuits on a printed circuit board which could be plugged into your
computer's ISA or PCI slot or into external boxes which would then plug
into the serial port.
With the advent of faster(and more expensive) CPUs and the highly
competitive OEM sector of the PC manufacturing base, the pressure is on
the OEMs to manufacture the cheapest(for the manufacturer) modem
solution.
So, the MCU, (and sometimes DSP) are implemented as proprietary software
solutions built into fancy, expensive, monolithic operating systems
(usually in the Device Drivers), and the remaining stuff (PCU, and
Codec) implemented as hardware on a PCI card or sometimes even embedded
on the motherboard itself. That is why the name HCF (because the MCU
"Controller" is implemented as software running on the Host CPU).
Now I used "Cheapest for the PC manufacturer" because you as a consumer
end up paying ultimately since the stuff which is not on H/W will be in
the S/W OS which is bundled with the PC, and you do end up paying for
that.
Some of these HCF family modems may be as cheap as $30 but the downside
is that their device drivers are irritatingly available for only the
"win" family of OS. "Winmodem" is actually a trademark of 3Com, so
legally you cannot call a Rockwell HCF modem chip a winmodem, but they
are both Host Controlled (with the same concept of H/W-S/W combo
solutions).
Here I might add that "Lucent Technologies" have a binary only Linux
driver for one of their modems which is based on the Conexant chipset (
I don't remember which one ).
>From what I have researched till date, the specs for writing drivers for
these type modems are not available, so even if someone wanted to (that
someone being me), they couldn't write an open source driver for Linux.
A useful site for HCF type of modems is www.linmodems.org
I hope all this is helpful.
Thanx
Rohit Samson Dean
P.S.
Please remove NOSPAM from my address if replying to me.
Brian wrote:
> I would like to ask "Is modem using Rockwell HCF chip a winmodem?"
------------------------------
From: "Charles Sullivan" <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.misc
Subject: Re: Floppy format problem.
Date: Fri, 28 Apr 2000 14:08:54 GMT
Harold Bower <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]...
> Charles Sullivan wrote:
> >
> [snip]
> > Uh, oh...perhaps there's more to this than meets the eye. I timed the
> > formatting
> > of 1.2M and 360K diskettes on the same high-density Teac drive
> > (FD55GFR-7193-U)
> > under Linux (RH 6.0) and DOS (with Win 98) on a Pentium II - 450 MHz
system.
> > Linux DOS
> > 1.2M 89 s 68 s
> > 360K 46 s 33 s
> >
> > With the factory jumper settings, the drive speed is supposed to be 360
rpm
> > for both high and double density. If the tracks on the 360K were
written
> > two-by-two with the same data to emulate the wide head of a
double-density
> > drive, one would expect the times to be approximately the same, but it
> > looks like only every other track was written. (The shorter times under
> > DOS are probably attributable to it verifying each track immediately
after
> > writing, whereas Linux makes a separate verification pass.)
>
> There are two ways of having 1.2M drives work at the 360K density, but
> most newer drives do not include the options for one. The original way
> was to actually change the spindle speed; 360 rpm for 1.2MB HD, 300 rpm
> for 360/720K densities. That way, the data rates could be held at the
> 500 kbps for 'HD' and 250 kbps for 'MFM' (or Double-Density). This
> complicated bios routines because switching speeds required insertion of
> considerable delays normally associated with spinup times. Another
> complication introduced with the 3.5" HD format was that the polarity of
> the "HD" lead was the opposite between the two. This is well documented
> in older National Semiconductor (among other) data sheets. This is NOT
> how most clone PCs work.
>
> Most of them now keep the spindle speed at 360 rpm and change the data
> rate from 500 kbps for 1.2M HD to 300 kbps for 360/720K densities. If
> you work out the math, 300 kbps at 360 rpm is the same bit density as
> 250 kbps at 300 rpm, so the disks were compatible in this regard. Now a
> density change no longer need accomodate the physical delays in changing
> motor speed.
>
> > I also checked the jumper settings on my 10 year-old Teac FD55GFR-142-U
> > and they are the same factory settings, i.e., double-density speed is
> > 360 rpm. This drive is installed on an old 33 MHz 486 system running
> > DOS 5.0 and the times for formatting 1.2M and 360K diskettes are
> > approximately the same as shown above.
> >
> > The test diskettes were not bulk erased and the 360K diskette had been
> > previously written on a double-density drive.
>
> I believe that you may be confused by thinking that the 360K diskettes
> are writted in a 1.2M drive by writing two adjacent tracks with the same
> data...they are NOT. In a 1.2M drive, the drive steps twice for each
> track increment, writing every other track. If it were not so, your
> times for Linux would be more than twice those for DOS. If you sketch a
> couple of tracks on a piece of paper, label one on an end as track 0,
> and increment numbers for the adjacent 'tracks'. Mark a large swath
> around track 0, 2, 4, etc. That would correspond to tracks 0, 1 and 2
> on 360K. The narrower tracks will be reliable, but writing narrow and
> reading wide (with a 'real' 360k drive) might not if the disk were
> previously written with a 'real' 360k.
>
> If you can find some old 720K drives by TEAC, you will find a jumper
> that actually forces a double-step the drive. It appears that they used
> a common stepper and electronics between 40 and 80 track drives (at
> least the ones I had in the mid 80s), and the technology was carried
> forward. You can find assembly code for Z80/8080 systems which do the
> double-stepping in CP/M archives as part of BIOS code for CP/M.
You're right, the discussion here did lead me to believe that two adjacent
tracks were written with the same data. But with the measured format times
that seems not to be the case. However my experience and that of David C.
was that 360K diskettes written on 1.2M drives on clone PCs available a few
years after the introduction of the IBM-AT _were_ readable on MFM drives.
I was told years ago that the later 1.2M drives had some sort of dual-head
arrangement for write-compatibility with MFM drives. And to the best of my
recollection I had no problem reading 360K diskettes on an older MFM-only
system which were written on my circa-1990 clone PC (which I still have)
and which was/is equipped with a Teac FD55GFR-142-U of the same vintage.
My confusion now is that the data sheet for that old Teac FD55GFR-142-U
says the same thing as the data sheet for a new Teac FD55GFR-7193-U,
i.e., that 360K diskettes are read-only. So how did it write MFM
compatible diskettes? The story about the dual heads certainly doesn't
seem to apply to either of these drives.
Regards,
Charles Sullivan
------------------------------
From: [EMAIL PROTECTED] (Mark Paulus)
Reply-To: [EMAIL PROTECTED]
Crossposted-To: comp.os.linux.setup,comp.os.linux.networking
Subject: Re: help: Can't print to 2nd port of HP JetDirect EX Plus3
Date: Fri, 28 Apr 2000 14:09:03 GMT
Hmmm. Where exactly would I place the
\\hpnetbox\raw2? In the Printer name entry,
or the Printer port entry?? Or am I missing
something fundamental?
EX Plus3 has it's own IP address (192.168.0.126),
and I can ping it, and telnet to it. But I am trying to
set up the appropriate queues from linux. I am
expecting that I can talk to this Print Server solely
from the linux box without having to go through any
other boxes. The reference you have me looks like
a UNC name, which brings SAMBA to mind. I don't
think I should have to use SAMBA either. Any clarification
would be gratefully appreciated.
On Thu, 27 Apr 2000 08:37:40, [EMAIL PROTECTED] wrote:
> In article <[EMAIL PROTECTED]>,
> Mark Paulus <[EMAIL PROTECTED]> wrote:
> > Hi,
> >
> > I have an HP External JetDirect Print Card/Server (J2593).
> > On port 1 I have a DJ 880C, and on port 2 I have an
> > Okidata OL410e. I have set up /etc/printcap entries for
> > both of these, but I guess I don't have things quite right.
> > I can print to port 1 (The InkJet), but I can't figure out
> > how to get to the 2nd port. I have played with HP's
> > WebJet software, but it wasn't a lot of help either. I keep
> > getting some kind of password error.
> >
> > Has anyone else gotten an EX Plus3 working with Linux, and
> > if so, what do your printcap entries look like??
> >
> > Thanks.
> >
>
> try \\hpnetbox\raw2
>
> --
> '...' said the joker to the thief
> 'there's too much confusion, i cant get no relief...
> so let us not talk falsely now, the hour's getting late'
>
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.
--
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