Linux-Hardware Digest #495, Volume #13 Tue, 29 Aug 00 11:13:10 EDT
Contents:
Problem with a 30.7Go Maxtor HD ("Goodie")
Re: Zip100 Mount Problems - /dev/sda4 not a valid block device (Chris Rankin)
Re: ZIP-drive installation under RH 6.2 (Chris Rankin)
Re: Parallel port scanner ([EMAIL PROTECTED])
Re: IDE CD-Rom doesn't like SCSI emulation with CDRW (Dominic Hargreaves)
Fibre Channel Hardware (Tim Pailthorpe)
Re: Lilo and floppy (Tim Pailthorpe)
Dell and Micron (Mark)
Re: Problems with monitor switch (Tim Pailthorpe)
Re: Zip100 Mount Problems - /dev/sda4 not a valid block device (Justo M. Casablanca)
Re: Zip100 Mount Problems - /dev/sda4 not a valid block device (Justo M. Casablanca)
Re: (YASP) Seagate Barracuda (ST318416W) Incompatibility (Henry_Barta)
Re: Really annoying X problem - HHHHHEEEEELLLLLLPPPPPP!!!!!!!! ("Gene Heskett")
Re: Dell and Micron (Steve Gage)
Re: Which SMP: Dual 370 or Dual Slot 1? ([EMAIL PROTECTED])
Serial Port / Modem question (Larry Krigbaum)
Re: Why does Linux printing via Parallel port slow system?
([EMAIL PROTECTED])
Re: Which SMP: Dual 370 or Dual Slot 1? (John Burton)
----------------------------------------------------------------------------
From: "Goodie" <[EMAIL PROTECTED]>
Subject: Problem with a 30.7Go Maxtor HD
Date: Tue, 29 Aug 2000 11:06:45 GMT
Hi everyone,
I hope this is the good newsgroup, if not, let me know so that I can go
elsewhere to shade my tears ;o)
I got a problem relative to the installation of linux on my computer. Here's
the situation.
It is made of 2 HD : 1 IBM ULTRA66 of 13 Go formatted in FAT 32 and running
my windows 98 OS and 1 new Maxtor ULTRA100 Diamondmax of 30.7 Go. Both of
them are connected to a ULTRA66 card on the motherboard.
The idea was to partition this new disk (which is a slave one) with 8 Go
formatted in Linux and with another one of 128 Mo for lnux swap. The other
22 Go or so where supposed to be formatted in DOS.
I first tried to format the windows partitions with fdisk. It worked
perfectly. I had let the other 8 Go free so that the partioning could be
done under DrakX once it would have been launched.
But (here comes the problems... T_T) when I launched DrakX, it told me that
I had a 13Go first HD called hde and then, the other disk, according to him,
was an 8Go drive called hdf...
We tried to use fdisk under linux from another computer on this one and the
result was that my new HD was seen as a 8Go HD with 16383 cylinders or so
whereas under fdisk in DOS mode, it had a 29311 Mb capacity.
I tried to install Suse 6.4 thinking that mandrake had a problem but it also
told me that this drive was an 8 Gb drive :o(
We tried to change the number of cylinders under fdisk in expert mode but it
did not work... More important, a diagnosys told us that some partitions
were crossing each other, and I don't believe it is normal ^_^;;;
The first time I tried to partition it I was able to use 120% of my HD
capacity........ since under the dos fdisk I could always fill 29311 Mb even
with 8 Gb already formatted in Linux and Linux swap...
We also tried to reformat, reinstall everything but it did not work... And
also, if I install it on the first 13 Gb HD, keeping the new HD for windows,
it won't recognize all the capacity of the HD, so I don't think it is a
solution, not talking about the fct that I don't have an application such as
partition magic ...
It does not appear to be a real hardware problem since it works under the
DOS fdisk, but more a problem of compatiblity with linux.
So there is my problem, I don't want to use only 8Gb on a 30.7 Gb but using
linux, it appears to be the only way... And I really would like to try linux
because I am tired of crashing and seeing this blue screen all the time ;_;
Thank you very much in advance if you can help me.
Goodie, linux newbie, eating his table *crunch* *crunch*
------------------------------
From: Chris Rankin <au.zipworld.com@{no.spam}rankinc>
Subject: Re: Zip100 Mount Problems - /dev/sda4 not a valid block device
Date: Tue, 29 Aug 2000 22:36:16 +1100
Jens Stegemann wrote:
> Try to mount /dev/sda1. I had the same problems. Sometimes it works with 1
> sometimes with 4. It seems to depend on what other modules you have allready
> linked to your kernel when starting ppa.
VFAT filesystems mount on /dev/sda4. However, if you reformat your ZIP
disk with an ext2 filesystem then it will mount on /dev/sda1 instead. As
for WHY, I have absolutely no idea. However, it does mean that your
/etc/fstab is unambigous:
/dev/sda4 /mnt/zip vfat rw,user,noauto,unhide
/dev/sda1 /mnt/zip2 ext2 rw,noauto
Chris
------------------------------
From: Chris Rankin <au.zipworld.com@{no.spam}rankinc>
Subject: Re: ZIP-drive installation under RH 6.2
Date: Tue, 29 Aug 2000 22:47:05 +1100
rob-boom wrote:
> I'm trying to install my parallel ZIP 100 drive under RH 6.2
> I ran insmod ppa
> I want to connect it to my second parport. ( via a isa lpt ).
The trick will be to configure the parport modules correctly. For
example, a typical modules.conf might contain these lines:
alias parport_lowlevel parport_pc
options parport_pc irq=7,5 io=0x378,0x278
However, I have no idea which IRQ and IO port your second LPT port is
using. You should use whatever values you configured (jumpered?) your
ISA card to. When you load the parport modules, you will then have two
devices, parport0 and parport1 (check in /proc), and the ppa module will
scan them both for a ZIP drive when it loads.
I recommend using EEP on the second port since I don't think that ppa
supports ECP.
Chris
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: Parallel port scanner
Date: Tue, 29 Aug 2000 11:42:20 GMT
I made a 'ln -s /dev/lp0 /dev/scanner'. 'find-scanner' opens the device
but still no scanner is found. Do I have to load some modules before?
Detlev
In article <[EMAIL PROTECTED]>,
James Richard Tyrer <[EMAIL PROTECTED]> wrote:
> This is a multi-part message in MIME format.
> --------------E492FBADD7AF7186AAFC5D48
> Content-Type: text/plain; charset=us-ascii
> Content-Transfer-Encoding: 7bit
>
> [EMAIL PROTECTED] wrote:
>
> > I am using a parallel port scanner. I installed SANE but the
tool 'find-
> > scanner' does not find anything. In the config file for my scanner
> > (/etc/sane.d/mustek.conf) the device is linked to '/dev/scanner'.
But
> > this device isn't existing in /dev.
> > What symlink has to be created for a parallel port scanner?
> >
> > regards
> > Detlev
> >
>
> You need to down load ppSCSI from:
>
> http://www.torque.net/parport/ppscsi.html
>
> Note that this is a patch for the Kernel & I haven't been able to get
it to
> work yet.
>
> JRT
>
> --------------E492FBADD7AF7186AAFC5D48
> Content-Type: text/x-vcard; charset=us-ascii;
> name="tyrerj.vcf"
> Content-Transfer-Encoding: 7bit
> Content-Description: Card for James Richard Tyrer
> Content-Disposition: attachment;
> filename="tyrerj.vcf"
>
> begin:vcard
> n:Tyrer;James Richard
> tel;fax:call first
> tel;home:(520) 648-3720
> x-mozilla-html:FALSE
> org:JRT Engineering
> adr:;;1468 North Rio Sonora;Green Valley;Arizona;85614-4007;USA
> version:2.1
> email;internet:[EMAIL PROTECTED]
> x-mozilla-cpt:;2
> fn:James Richard Tyrer
> end:vcard
>
> --------------E492FBADD7AF7186AAFC5D48--
>
>
Sent via Deja.com http://www.deja.com/
Before you buy.
------------------------------
From: Dominic Hargreaves <[EMAIL PROTECTED]>
Subject: Re: IDE CD-Rom doesn't like SCSI emulation with CDRW
Date: Tue, 29 Aug 2000 13:03:22 +0100
[EMAIL PROTECTED] wrote:
>
> As I said, I recompiled my kernel. Removed IDE ATAPI cdrom support.
> Put in SCSI, SCSI CDROM, Generic SCSI driver (allowing manufacturer's
> extensions), IDE-SCSI emulation and have no lines in lilo.conf to muck
> about with modules (also SCSI disk drives if you have a ZIP drive, of
> course). On boot I have scd0 and scd1.
Ok, I built all the SCSI stuff into the kernel rather than have it
modular, but what finally fixed this problem was makeing /dev/scd8 and
/dev/sg8 (and /dev/sgi)
It seems the philips drive takes up /dev/scd[0-7] and /dev/sg[0-7] for
some reason. Making those files with mknod made cdrecord -scanbus notice
the Teac drive at once.
Thanks for the tips.
Dom
------------------------------
From: timpa@!SPAMkeytech.co.uk (Tim Pailthorpe)
Subject: Fibre Channel Hardware
Date: Tue, 29 Aug 2000 12:14:19 GMT
Hi,
I need a Fibre Channel solution for a 17 node Linux Cluster. I noticed
that there is support for 1 fibre channel card in the Linux kernel,
but I wanted to speak to anyone who may have put fibre channel in a
Linux machine and see what they recommended.
Thanks,
Pls reply to my email.... [EMAIL PROTECTED]
Tim.......
remove !SPAM from email address to reply.
------------------------------
From: timpa@!SPAMkeytech.co.uk (Tim Pailthorpe)
Subject: Re: Lilo and floppy
Date: Tue, 29 Aug 2000 12:31:32 GMT
There is a Boot-disk how to. This will detail (and I mean DETAIL) how
to do what you want witha floppy
On Mon, 28 Aug 2000 19:59:36 GMT, "Terramex" <[EMAIL PROTECTED]>
wrote:
>Hi,
>can I install Lilo on a normal floppy disk and start only Lilo from it ? I
>don't want Lilo on the mbr, just on a disk?
>
>I tried to look around and I find no infos. Any1 can help, if it's possible
>to do ?
>
>Thanks a lot.
>
>
Tim.......
remove !SPAM from email address to reply.
------------------------------
From: Mark <[EMAIL PROTECTED]>
Subject: Dell and Micron
Date: 29 Aug 2000 05:09:27 -0700
I'm going to be purchasing a new computer soon. Has anyone had problems
installing Linux on Dell and Micron computers?
------------------------------
From: timpa@!SPAMkeytech.co.uk (Tim Pailthorpe)
Subject: Re: Problems with monitor switch
Date: Tue, 29 Aug 2000 12:53:32 GMT
This is probably a red herring, but if you use X-Windows (I assume you
do) you do not need gpm. If this does not help, try changing the mouse
type in XF86Setup. If you are not using X then I don't
know......Sorry.
On Tue, 29 Aug 2000 11:09:06 +0200, Andreas Tretow
<[EMAIL PROTECTED]> wrote:
>Hi all,
>
>I have two machines, the first one with Linux RH 6.2 and the second with
>Windows 98. Both computers use one set of monitor, keyboard and mouse on
>EQUIP SW0204M Data Switch. Everything works fine until I switch from the
>Windows machine back to Linux. My mouse then behaves erratically, even
>on the console. Restarting gpm does not help.
>
>Any ideas ?
>
>Thanks in advance.
>Andreas
>--
>Andreas Tretow
>[EMAIL PROTECTED]
Tim.......
remove !SPAM from email address to reply.
------------------------------
From: Justo M. Casablanca <[EMAIL PROTECTED]>
Subject: Re: Zip100 Mount Problems - /dev/sda4 not a valid block device
Date: Tue, 29 Aug 2000 13:29:15 GMT
Actually, I have already experimented mounting with /dev/sda and /dev/sda1.
Neither works. Now I must give you a little bit of history here. This same
zip drive and the same exact disks used to be mountable on /dev/sda4 on
my older PC, which used to have Red Hat 6.1 installed. I have since handed
down that PC to my son, since I bought myself a new one.
So, once upon a time all of my zip disks were mountable on /dev/sda4
under Red Hat 6.0 and 6.1. This is the first time I have attempted to
use the zip drive under Red Hat 6.2.
-Justo
--
Posted via CNET Help.com
http://www.help.com/
------------------------------
From: Justo M. Casablanca <[EMAIL PROTECTED]>
Subject: Re: Zip100 Mount Problems - /dev/sda4 not a valid block device
Date: Tue, 29 Aug 2000 13:29:15 GMT
Hmm, I thought my /etc/fstab file was pretty specific in the original
posting. Besides, the same zip drive with the same disks used to mount
as vfat file systems under /dev/sda4 in RH 6.0 and 6.1. Only now that
I have bought a new PC and switched to RH 6.2 does this problem present
itself.
I will certainly try what you have proposed and post back the results.
-Justo
--
Posted via CNET Help.com
http://www.help.com/
------------------------------
From: Henry_Barta <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.development.system
Subject: Re: (YASP) Seagate Barracuda (ST318416W) Incompatibility
Date: 29 Aug 2000 13:34:07 GMT
D. Stimits <[EMAIL PROTECTED]> wrote:
> Is the drive terminated correctly?
I am running into what sounds like the same problem with a
Seagate Barracuda and a several year old AHA 2940UW. I'm quite
certain termination is correct. I've tried this drive alone
(on the wide bus, still have a CD-ROM and DAT on the narrow
portion of the bus) with termination enabled and with two other
drives with termination supplied by another drive. (Before
trying to add the drive, I had a working system with three IBM
Ultrastor UW drives runnning the 2.2.12 Kernel with no apparent
problems. Until one of the drives failed, that is.)
I was able to format the drive under Windows NT and copy files
to it, so it seems that the hardware works. There must be
something different about how the Linux driver handles the
drive that triggers this problem.
The first error message I see before the endless loop of SCSI
bus resets starts has text something along the line of 'Testing
Unit Ready'
There seem to be others experiencing the same problem, so it
does not appear to be a sample defect with the drive.
--
Hank Barta White Oak Software Inc.
[EMAIL PROTECTED] Predictable Systems by Design.(tm)
Beautiful Sunny Winfield, Illinois
------------------------------
Date: 29 Aug 2000 8:56:42 -0500
From: "Gene Heskett" <[EMAIL PROTECTED]>
Subject: Re: Really annoying X problem - HHHHHEEEEELLLLLLPPPPPP!!!!!!!!
Unrot13 this;
Reply to: <[EMAIL PROTECTED]>
Gene Heskett sends Greetings to Bozzy ;
> I have recently installed Mandrake 7.0 on my new PC:
> Athlon 600
> ASUS K7M Motherboard
> G400 Graphics card (32Mb)
> Mitsubishi Pro 710 monitor
> The problem is that that periodically, possibly anywhere between 30
> seconds to several minutes, my screen blinks. That is it goes blank
> for about a second after which the desktop display returns. I have
> tried upgrading to 7.1 of Mandrake, but that did not help. I am
> running KDE, but the same problem also manifests itself when I
> switch to Gnome. I did notice that when I try to configure my
> graphics card, specifying 32M, that when I go back in to configure
> it again it seems to reset it to a 16M G400, though I don't know
> whether this is an issue.
> Since upgrading to 7.1 I have selected my monitor from the list
> provided by the X-config utility and the Vertical and Horizontal
> sync rates match between my monitor manual and the XF86Config file.
> This is a really anoying bug that's driving me up the wall so any
> help would be appreciated.
I also have a monitor doing that. Its the monitors preset sync
circuitry. Either you are set right on the borderline of its detection
window for that set of operating parameters, or the detection circuitry
itself is flakey. On my old junker 17", I think its the detection
circuitry. Annoying yes, but apparently harmless in my case. I can
hear a relay click, the h scan collapses and comes right back up. Its
been doing it for 4 years now, independant of the computer or os driving
it. Since a decent new on in that size range is a bit pricy, I guess it
can blimk once in a while.
Cheers, Gene
--
Gene Heskett, CET, UHK |Amiga A2k Zeus040, Linux @ 400mhz
email gene underscore heskett at iolinc dot net
#Amiga based X10 home automation program EZHome, see at:#
# <http://www.thirdwave.net/~jimlucia/amigahomeauto> #
ISP's please take note: My spam control policy is explicit!
#Any Class C address# involved in spamming me is added to my killfile
never to be seen again. Message will be summarily deleted without dl.
This messages reply content, but not any previously quoted material, is
� 2000 by Gene Heskett, all rights reserved.
--
------------------------------
From: Steve Gage <[EMAIL PROTECTED]>
Subject: Re: Dell and Micron
Date: Tue, 29 Aug 2000 13:48:01 GMT
Mark wrote:
>
> I'm going to be purchasing a new computer soon. Has anyone had problems
> installing Linux on Dell and Micron computers?
I've always had good luck with Micron... nice standard components, at
least in the past. You just want to be sure to select a "real" modem.
- Steve
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: Which SMP: Dual 370 or Dual Slot 1?
Date: Tue, 29 Aug 2000 14:08:19 GMT
Thank you for the response.
I wasn't clear on this issue. When I said 370, I meant the chipset
i815(?) and when I said Slot 1, I meant BX chipset. Sorry for the
confusion on my part.
Should I get a smp board based on the BX chipset or an smp board based on
the 815(?) chipset? The most important criteria being compatibility with
Linux.
On Tue, 29 Aug 2000, Glitch wrote:
> it's not the slot that matters, its the chip in the slot. Some chips
> will only go in teh Socket and some only go in the Slots. Don't worry
> about the connection type per se, worry about the actual CPU and go from
> there.
>
> [EMAIL PROTECTED] wrote:
> >
> > Hi Folks:)
> >
> > I'm in the market for a dual CPU System Board. I don't know whether I
> > should get a dual Socket 370, or a Dual Slot 1. From a performance and
> > Linux-compatibility point of view, which should I get: A Dual Socket
> > 370, or a Dual Slot 1 System Board?
> >
> > Cost is a factor, but I'm more concerned with the performance for
> > testing applications (Samba, SQL, Notes, NetWare, NT, MS Exchange, NS
> > Messaging Server, etc.). Of course, not all at the same time...:)
> >
> > **** Herminio Alvarez, Jr.
>
------------------------------
From: Larry Krigbaum <[EMAIL PROTECTED]>
Subject: Serial Port / Modem question
Date: Tue, 29 Aug 2000 09:06:33 -0500
I'm feeling too dumb to own a computer right now, but
I've been working on this off and on for weeks now, and I'm
not making a bit of progress. I have Redhat 6.2 (Kernel
2.2.14-5.0) installed on an Intel box with an external 3Com
USR 56K Faxmodem v.90 modem, Sportster 5686-03 and I can't
get it to work, although I've seen several postings on the net
saying it's works very well with RedHat.. I believe the problem
is in my serial port configuration. I've had the modem and
cable running on a Win2k box. I'm connecting through the COM
ports on the motherboard and I've tried both of them with an
equal lack of success. I've been through the FAQs, HOW-TOs,
books, the so-called mfgr support, and talked to whoever I
could find with any Unix/Linux experience. If anyone can offer
any help, suggestions, hints, or point me in some productive
direction, I'd really, really appreciate it. I've tacked on
the results of several diagnostic tools I've used at the end
of this message. Thanks again.
Larry Krigbaum
[EMAIL PROTECTED]
Command: dmesg | grep ttyS
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
==================================================
Command: wvdialconf test
Scanning your serial ports for a modem.
ttyS1<*1>: ATQ0 V1 E1 -- ATQ0 V1 E1 -- ATQ0 V1 E1 -- nothing.
ttyS0<*1>: ATQ0 V1 E1 -- ATQ0 V1 E1 -- ATQ0 V1 E1 -- nothing.
Port Scan<*1>: S2 S3
Sorry, no modem was detected! Is it in use by another program?
Did you configure it properly with setserial?
==================================================
Command: cat /proc/interrupts
CPU0
0: 217885 XT-PIC timer
1: 1465 XT-PIC keyboard
2: 0 XT-PIC cascade
8: 1 XT-PIC rtc
9: 0 XT-PIC es1370
10: 202 XT-PIC eth0
12: 13828 XT-PIC PS/2 Mouse
13: 1 XT-PIC fpu
14: 159218 XT-PIC ide0
15: 3317 XT-PIC ide1
NMI: 0
==================================================
Command: cat /procs/ioports
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0070-007f : rtc
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : ide1
01f0-01f7 : ide0
02f8-02ff : serial(set)
0376-0376 : ide1
03c0-03df : vga+
03f6-03f6 : ide0
03f8-03ff : serial(set)
6500-653f : es1370
f000-f007 : ide0
f008-f00f : ide1
c882b000-c882b07f : eth0
==================================================
Command: setserial -ga /dev/ttyS*
/dev/ttyS0, Line 0, UART: 16550A, Port: 0x03f8, IRQ: 4
Baud_base: 115200, close_delay: 50, divisor: 0
closing_wait: 3000, closing_wait2: infinte
Flags: spd_normal skip_test
/dev/ttyS1, Line 1, UART: 16550A, Port: 0x02f8, IRQ: 3
Baud_base: 115200, close_delay: 50, divisor: 0
closing_wait: 3000, closing_wait2: infinte
Flags: spd_normal skip_test
/dev/ttyS2, Line 2, UART: unknown, Port: 0x03e8, IRQ: 4
Baud_base: 115200, close_delay: 50, divisor: 0
closing_wait: 3000, closing_wait2: infinte
Flags: spd_normal skip_test
/dev/ttyS3, Line 3, UART: unknown, Port: 0x02e8, IRQ: 3
Baud_base: 115200, close_delay: 50, divisor: 0
closing_wait: 3000, closing_wait2: infinte
Flags: spd_normal
==================================================
Command: stty -a < /dev/ttyS0
speed 9600 baud; rows 0; columns 0; line = 0;
intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>;
eol2 = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase =
^W;
lnext = ^V; flush = ^O; min = 1; time = 0;
-parenb -parodd cs8 hupcl -cstopb cread clocal -crtscts
-ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon
-ixoff
-iuclc -ixany -imaxbel
opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0
vt0 ff0
isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop
-echoprt
echoctl echoke
==================================================
Command: stty -a < /dev/ttyS1
speed 9600 baud; rows 0; columns 0; line = 0;
intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>;
eol2 = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase =
^W;
lnext = ^V; flush = ^O; min = 1; time = 0;
-parenb -parodd cs8 hupcl -cstopb cread clocal -crtscts
-ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon
-ixoff
-iuclc -ixany -imaxbel
opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0
vt0 ff0
isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop
-echoprt
echoctl echoke
==================================================
Command: stty -a < /dev/ttyS2
stty: standard input: Input/output error
==================================================
Command: stty -a < /dev/ttyS3
stty: standard input: Input/output error
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: Why does Linux printing via Parallel port slow system?
Date: 29 Aug 2000 14:20:34 GMT
Reply-To: [EMAIL PROTECTED]
In <[EMAIL PROTECTED]>, [EMAIL PROTECTED] (sideband) writes:
>Because Linux does something that DOS/Windows doesn't... It actually
>uses the parallel port's IRQ. With the IRQ being called every time
>data needs to be sent to the port, you're going to see a slowdown on
>slower systems. The only real cure for this is to increase the size of
>the buffer in your M410 (i.e. Add RAM).
SSB,
I'm not sure this explanation makes sense. I would expect _polling_ to
suck up an inordinate number of cycles, since the CPU is likely to spend
a lot of time waiting for the printer to free up its internal buffer (if
any) and report an un-busy condition.
With IRQ-driven printing, the CPU only pays attention to the printer
when it is out of power, out of paper (sometimes), or out of bytes to
print, then it rapidly dumps enough data down the pipe to fill the
printer's internal buffer back up. Much less processor overhead.
I can't speak for Linux, since I've never checked into this particular
aspect of the system. I do know that OS/2 defaults to polled printer
support, and enabling interrupt-driven support (adding /IRQ to the
driver line) speeds up printing _and_ makes the system much more
responsive.
MSWinNT, at least through v4.x, has _no_ support for interrupt-driven
printing, as I painfully discovered trying to screen-dump a DOS session
to a slow printer with an 80-byte buffer. Don't know if MS added this
in for MSWin2K.
Hope this makes sense...
Frank McKenney, McKenney Associates
Richmond, Virginia / (804) 320-4887
E-mail: [EMAIL PROTECTED]
------------------------------
From: John Burton <[EMAIL PROTECTED]>
Subject: Re: Which SMP: Dual 370 or Dual Slot 1?
Date: Tue, 29 Aug 2000 10:32:15 -0400
[EMAIL PROTECTED] wrote:
> Thank you for the response.
>
> I wasn't clear on this issue. When I said 370, I meant the chipset
> i815(?) and when I said Slot 1, I meant BX chipset. Sorry for the
> confusion on my part.
>
> Should I get a smp board based on the BX chipset or an smp board based on
> the 815(?) chipset? The most important criteria being compatibility with
> Linux.
>
Ummm... can you *get* a i815 based SMP board? I haven't heard of one... The socket
370 boards SMP boards I've found so far are i840 based, VIA Apollo PRO (133A) based,
or ServerWorks ServerSet III (LE/HE) based. I understand the i840 based boards have
a few problems (expensive memory, and Linux compatibility). The VIA Apollo PRO
chipset is used in a number of single and dual processor motherboards and provides a
133Mhz FSB. The ServerWorks ServerSet III boards provide a 133Mhz FSB plus two PCI
buses, one of which allows 64bit PCI cards. The BX /GX based motherboards will only
provide a 100Mhz FSB.
John
--
John Burton, Ph.D.
Senior Associate GATS, Inc.
[EMAIL PROTECTED] 11864 Canon Blvd - Suite 101
[EMAIL PROTECTED] (personal) Newport News, VA 23606
(757) 873-5920 (voice) (757) 873-5924 (fax)
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