# Re: UMAX 1200S SCSI CARD

A. Leidenfrost (leidenfrost@dkrz.de)
Thu, 08 Jan 1998 11:34:44 +0100 (CET)

- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
- Next message: Oliver.Rauch@Wolfsburg.DE: "Re: UMAX 1200S SCSI CARD"
- Next message: Oliver.Rauch@Wolfsburg.DE: "Re: UMAX 1200S SCSI CARD"
- Previous message: Peter Schildmann: "Re: UMAX 1200S SCSI CARD"
- In reply to: Peter Schildmann: "Re: UMAX 1200S SCSI CARD"

-----BEGIN PGP SIGNED MESSAGE-----

On 07-Jan-98 Peter Schildmann wrote:
>> > I am using a NCR53C810 and a NCR/SymbiosLogic 53C860 and
>> > while I am scanning (using the bsd-driver) I am not able
>> > to access the disks for a while!
>>
>> that's weird - I also use a NCR 810 based card (ASUS SC200) with
>> a harddisk, a tape drive and a scanner (Umax Astra 1200)
>> connected to it; during a scan, disk access is slower, but
>> certainly possible...
>
> Many cheap scanners do not support the SCSI-2 disconnect/reselect
> protocol. This could be the reason for slow disk access.
>
> Peter

We also use a NCR53C810 for the scanner and a NCR/SymbiosLogic 53C860 for our
other SCSI devices. The scanner is a Microtek Scanamker E6 which doesn't
support SCSI-2 disconnect/reselect. However, this is exactly why we use two DMA
bus master cards. The card that comes with the scanner (aha152x )isn't bus
master capable. We are also using the BSD driver and the use of the two SCSI
controllers solved our disk access problems perfectly. So, maybe the first
person needs a SCSI BIOS upgrade or something. Just to make sure: The scanner
is attached to the NCR53C810 and the rest to the NCR/SymbiosLogic 53C860.

Regards,

Andree
- ---
Andree Leidenfrost, GEOPHYSICIST

Institute of Geophysics, Hamburg University
Bundesstrasse 55, 20146 Hamburg, Germany
phone +49 40 4123 2984, fax +49 40 4123 5441
http://www.app-geoph.dkrz.de/andree

finger u250011@gp12.dkrz.de for PGP public key
PGP fingerprint = 5F FC 44 FF 84 71 C4 46 72 64 9A F0 EF 99 89 7C

-----BEGIN PGP SIGNATURE-----
Version: 2.6.3ia
Charset: noconv

iQB1AwUBNLSrw0NbWTbvj71ZAQFTeAMAgR9/GtpyehIymaKq/V7LaBXozUB7kJLL
uhGUlLSnnV0bezwU9WIGeHzXsrEovDSGGN9o0sdNSX6MQ7nee50S1SzFlyDmbWJA
drpDmZ73zeLqL7gwOSOO/hUNoAy9IRiY
=BZGj
-----END PGP SIGNATURE-----

    --
    Source code, list archive, and docs: http://www.mostang.com/sane/
    To unsubscribe: echo unsubscribe sane-devel | mail majordomo@mostang.com

- Next message: Oliver.Rauch@Wolfsburg.DE: "Re: UMAX 1200S SCSI CARD"
- Next message: Oliver.Rauch@Wolfsburg.DE: "Re: UMAX 1200S SCSI CARD"
- Previous message: Peter Schildmann: "Re: UMAX 1200S SCSI CARD"
- In reply to: Peter Schildmann: "Re: UMAX 1200S SCSI CARD"