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flat bed scanner on SCSI-II

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Armin Wittmann

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Nov 2, 1998, 3:00:00 AM11/2/98
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Hi together

I am intending to buy a flat bed scanner.
I want to work with it also on Linux.
My current system ist: Linux with kernel 2.0.34

I guess I can work with 'sane' on such a device.

Now I want to know if there are already persons
who have done this already and if there is
already Software for some scanners...

I intend to buy one of these scanners:
Which are easy to use in connection with Linux?
I will for shure buy a SCSI version!!!

Agfa DuoScan
Agfa DuoScan T1200
Agfa ArcusII

HP ScanJet 6200C << my preferred one

UMAX Astra 1200S
UMAX Astra 2400S
UMAX PowerLookIII
UMAX PowerlookII

Mustek Paragon PowerPro
Mustek Paragon 1200LP

Can sombody give me a comment or a site where people
which work with Linux and scanners?
In future I want to buy also a dia-scanner...

Thanks

Armin

Josef Moellers

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Nov 2, 1998, 3:00:00 AM11/2/98
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Armin Wittmann wrote:
>
> Hi together
>
> I am intending to buy a flat bed scanner.
> I want to work with it also on Linux.
> My current system ist: Linux with kernel 2.0.34
>
> I guess I can work with 'sane' on such a device.
>
> Now I want to know if there are already persons
> who have done this already and if there is
> already Software for some scanners...

While I don't have a scanner from your list (I have a Vobis PerfectScan
aka Microtek E6) nor do I use Linux (I have FreeBSD), I do use sane and,
apart from a few bugs that are relatively easy to find and fix, it works
OK.

--
Josef Moellers molle...@sni.de
UNIX - Live free or die!
PS Dieser Artikel enthaelt einzig und allein meine persoenlichen
Ansichten!
PS This article contains my own, personal opinion only!

tafe...@nospamplease.kde.org

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Nov 2, 1998, 3:00:00 AM11/2/98
to
Armin Wittmann <wi...@ife.ee.ethz.ch> writes:
> I am intending to buy a flat bed scanner.
> I want to work with it also on Linux.
> My current system ist: Linux with kernel 2.0.34
>
> I guess I can work with 'sane' on such a device.

Be aware that, if your system has SCSI harddisks,
and the scanner does not support start-unit/stop-unit
(e.g. the Mustek 12000SP does not), then the SCSI
bus is blocked during the scan ... very annoying.

Except if you use a dedicated scsi controller.
However, hearsay is that it is better to buy a
cheap 1542 than to use the stock Mustek controler
that comes with the scanner.

In short: try to get a scanner that is capable of
start/stop unit.

Other thing: the Mustek scanner also was unable
to work at Ultra-Scsi speed...

--Stefan

Kenneth Crudup

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Nov 2, 1998, 3:00:00 AM11/2/98
to

I have a Microtek E-6 that works well.

-Kenny

--
Kenneth R. Crudup, Unix Software Consultant, Scott County Consulting
ke...@panix.com 617-422-2443
I'm getting paroled out of Boston, so I've got no real address or phone yet.

Kenneth Crudup

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Nov 2, 1998, 3:00:00 AM11/2/98
to
In article <ud876i...@nospamplease.kde.org>,
tafe...@nospamplease.kde.org says:

>Be aware that, if your system has SCSI harddisks,
>and the scanner does not support start-unit/stop-unit
>(e.g. the Mustek 12000SP does not), then the SCSI
>bus is blocked during the scan ... very annoying.

My Microtek E-6 supports disconnect.

Dave Platt

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Nov 2, 1998, 3:00:00 AM11/2/98
to
In article <ud876i...@nospamplease.kde.org>,
<tafe...@nospamplease.kde.org> wrote:

>Be aware that, if your system has SCSI harddisks,
>and the scanner does not support start-unit/stop-unit
>(e.g. the Mustek 12000SP does not), then the SCSI
>bus is blocked during the scan ... very annoying.

I think you mean "disconnect/reselect" - in SCSI, start-unit/stop-unit
refers to spinning up and spinning down a hard disk, while
disconnect/reselect refers to the ability of a device to disconnect
from the SCSI bus while it's executing a lengthy command.

I agree, having your SCSI locked up for several seconds during a scan
is annoying.

--
Dave Platt dpl...@feghoot.ml.org
Visit the Jade Warrior home page: http://feghoot.ml.org/jade-warrior/
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!

Josef Moellers

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Nov 2, 1998, 3:00:00 AM11/2/98
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tafe...@nospamplease.kde.org wrote:

[ ... ]

> Be aware that, if your system has SCSI harddisks,
> and the scanner does not support start-unit/stop-unit
> (e.g. the Mustek 12000SP does not), then the SCSI
> bus is blocked during the scan ... very annoying.

[ ... ]

> In short: try to get a scanner that is capable of
> start/stop unit.

What you mean is "disconnect/reselect". Whether or not a scanner is
capable of start/stop unit, it will only keep the bus blocked if it
doesn't disconnect during the scan.

Disconnect/reselect is a feature at the very low SCSI message level.
Start/stop unit is a SCSI command which will e.g. start/stop a disk
spinning.

Itai Nahshon

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Nov 8, 1998, 3:00:00 AM11/8/98
to Dave Platt
Dave Platt wrote:
>
> In article <ud876i...@nospamplease.kde.org>,
> <tafe...@nospamplease.kde.org> wrote:
>
> >Be aware that, if your system has SCSI harddisks,
> >and the scanner does not support start-unit/stop-unit
> >(e.g. the Mustek 12000SP does not), then the SCSI
> >bus is blocked during the scan ... very annoying.
>
> I think you mean "disconnect/reselect" - in SCSI, start-unit/stop-unit
> refers to spinning up and spinning down a hard disk, while
> disconnect/reselect refers to the ability of a device to disconnect
> from the SCSI bus while it's executing a lengthy command.
>
> I agree, having your SCSI locked up for several seconds during a scan
> is annoying.
>
I think it's even worse because it can deadlock the system completely.
I mean if the scanning software is trying to write to a disk on
the same scsi bus or if there is swap space on such disk.

> --
> Dave Platt dpl...@feghoot.ml.org
> Visit the Jade Warrior home page: http://feghoot.ml.org/jade-warrior/
> I do _not_ wish to receive unsolicited commercial email, and I will
> boycott any company which has the gall to send me such ads!

Itai
--
Itai Nahshon nah...@actcom.co.il
Also nah...@vnet.ibm.com

Andreas Mohr

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Nov 9, 1998, 3:00:00 AM11/9/98
to
tafe...@nospamplease.kde.org wrote:
> Armin Wittmann <wi...@ife.ee.ethz.ch> writes:
> > I am intending to buy a flat bed scanner.
> > I want to work with it also on Linux.
> > My current system ist: Linux with kernel 2.0.34
> >
> > I guess I can work with 'sane' on such a device.

> Be aware that, if your system has SCSI harddisks,


> and the scanner does not support start-unit/stop-unit
> (e.g. the Mustek 12000SP does not), then the SCSI
> bus is blocked during the scan ... very annoying.

> Except if you use a dedicated scsi controller.


> However, hearsay is that it is better to buy a
> cheap 1542 than to use the stock Mustek controler
> that comes with the scanner.

No !
The 1542 uses DMA transfer, which is very slow on the PCI-ISA bridge of PCI
systems.
Software polling is OK.
Always use controllers from the AHA 152x/150x series !
(at least any controller without DMA)

--
Andreas Mohr

Kenneth Crudup

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Nov 9, 1998, 3:00:00 AM11/9/98
to
In article <726bi1$1k0$1...@infosun2.rus.uni-stuttgart.de>,
cipa...@student.e-technik.uni-stuttgart.de (Andreas Mohr) says:

>The 1542 uses DMA transfer, which is very slow on the PCI-ISA bridge of PCI
>systems.

Define "slow", and *which* PCI-ISA bridges are you talking about which are
so affected?

The PIIX4 used on many PII chipsets (LX, BX) has good support for ISA DMA.

tafe...@nospamplease.kde.org

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Nov 11, 1998, 3:00:00 AM11/11/98
to
dpl...@feghoot.ml.org (Dave Platt) writes:
>
> I think you mean "disconnect/reselect" - in SCSI, start-unit/stop-unit
> refers to spinning up and spinning down a hard disk,

Ah, yes, of course.
Thanks.

--Stefan

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