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2000-12-10 Henning Meier-Geinitz <hmg@gmx.de> 

* doc/sane-scsi.man: Small changes/updates concerning Linux
	  2.2. Updated entries about Adaptec cards, NCR53c400/Domex 3181
	  cards, NCR 810 cards. Removed direct links to some backends.
	* doc/sane-snapscan.man: Added link to new snapscan website.
DEVEL_2_0_BRANCH-1
Henning Geinitz 2000-12-10 13:20:20 +00:00
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doc/sane-scsi.man
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@ -1,4 +1,4 @@
.TH sane-scsi 5 "26 July 2000"
.TH sane-scsi 5 "10 Dec 2000"
.IX sane-scsi
.SH NAME
sane-scsi - SCSI adapter tips for scanners
@ -6,11 +6,13 @@ sane-scsi - SCSI adapter tips for scanners
This manual page contains various operating-system specific tips and
tricks on how to get scanners with a SCSI interface working.
.SH GENERAL INFO
For scanners with a SCSI interface, it is necessary to edit the
For scanners with a SCSI interface, it may be necessary to edit the
appropriate backend configuration file before using SANE for the first
time. For most systems, the configuration file should list the name
of the generic SCSI device that the scanner is connected to (e.g., under
Linux,
.B /dev/sg4
or
.B /dev/sge
is such a generic SCSI device). It is customary to create a symlink
from
@ -135,11 +137,11 @@ First, make sure your kernel has SCSI generic support enabled. In
``make xconfig'', this shows up under ``SCSI support->SCSI generic
support''.
.PP
To keep scanning times to a minimum, it is strongly recommended to use
a large buffer size for the generic SCSI driver. By default, Linux
uses a buffer of size 32KB. This works, but for many cheaper scanners
this causes scanning to be slower by about a factor of four than when
using a size of 127KB. Linux defines the size of this buffer by macro
To keep scanning times to a minimum, it is strongly recommended to use a large
buffer size for the generic SCSI driver. By default, older Linux kernels use
a buffer of size 32KB. This works, but for many cheaper scanners this causes
scanning to be slower by about a factor of four than when using a size of
127KB. Linux defines the size of this buffer by macro
.B SG_BIG_BUFF
in header file
.IR /usr/include/scsi/sg.h .
@ -187,12 +189,15 @@ under Linux:
.RS
.TP
Adaptec AHA-1505/AHA-1542/AHA-2940
Reported to work fine with Linux v2.0.
Reported to work fine with Linux v2.0. If you encounter kernel freezes
or other unexpected behaviour get the latest Linux kernel (2.2.17 seems to
work) or reduce SCSI buffer size to 32 kB.
.TP
ASUS SC200
Reported to work fine with Linux v2.0.
.TP
BusLogic BT958 To configure the BusLogic card, you may need to follow
BusLogic BT958
To configure the BusLogic card, you may need to follow
these instructions (contributed by Jeremy <jeremy@xxedgexx.com>):
During boot, when your BusLogic adapter is being initialized, press
Ctrl-B to enter your BusLogic adapter setup. Choose the address which
@ -203,27 +208,33 @@ configuration''. Change ``Negotiation'' to ``async'' and change
``Disconnect'' to ``off''. Press Esc, save, and Esc again until you
are asked to reboot.
.TP
Mustek 53c400/DTCT436 or DTC3181E ISA SCSI card
If your card is jumper-less (plug and pray) and the Linux kernel fails
to recognize your card, then you may need the patch
.I mustek-scsi-0.2.patch.gz
which is available at
.IR ftp://ftp.mostang.com/pub/sane/ .
Once the kernel detects the card, it should work all right. However,
while it should work, do not expect good performance out of this
card---it has no interrupt line and therefore while a scan is in
progress, the system becomes almost unusable.
NCR/Symbios 53c400/53c400a or Domex DTC3181E/L/LE (DTCT436/436P) ISA SCSI card
This card is supplied by Mustek (and other vendors). If you use Linux 2.0.x
you may
need a patch from Ingmar Baumgart's homepage:
.br
.IR http://rzstud1.rz.uni-karlsruhe.de/~uh49/mustek-scsi.html
.br
The SCSI cards are supported by the module g_NCR5380. It's necessary to tell
the kernel the io port and type of card. Example for a 53c400a: ``modprobe
g_NCR5380 ncr_addr=0x280 ncr_53c400a=1''. Once the kernel detects the card,
it should work all right. However, while it should work, do not expect good
performance out of this card---it has no interrupt line and therefore while a
scan is in progress, the system becomes almost unusable. You may change the
values of the USLEEP macros in drivers/scsi/g_NCR5380.c. Some documentation is
in this file and NCR5380.c.
.TP
ncr810
NCR/Symbios 810
For this card, make sure the SCSI timeout is reasonably big; the
default timeout for the Linux kernels before 2.0.33 is 10 seconds,
which is way too low when scanning large area. If you get messages of
the form ``restart (ncr dead ?)'' in your /var/log/messages file or on
the system console, it's an indication that the timeout is too short.
In this case, find the line ``if (np->latetime>10)'' in file
ncr53c8xx.c (normally in directory /usr/src/linux/drivers/scsi) and
change the constant 10 to, say, 60 (one minute). Then rebuild the
kernel/module and try again.
default timeout for the Linux kernels before 2.0.33 is 10 seconds, which is
way too low when scanning large area. If you get messages of the form
``restart (ncr dead ?)'' in your /var/log/messages file or on the system
console, it's an indication that the timeout is too short. In this case, find
the line ``if (np->latetime>10)'' in file ncr53c8xx.c (normally in directory
/usr/src/linux/drivers/scsi) and change the constant 10 to, say, 60 (one
minute). Then rebuild the kernel/module and try again. For some scanners it
may be necssary to disable disconnect/reconnect. To achieve this use the
option ncr53c8xx="disc:n".
.TP
Tekram DC390
Version 1.11 of the Tekram driver seems to work fine mostly, except
@ -251,7 +262,6 @@ environment variable controls the debug level for the generic SCSI I/O
subsystem. E.g., a value of 128 requests all debug output to be
printed. Smaller levels reduce verbosity.
.SH "SEE ALSO"
sane\-dmc(5), sane\-epson(5), sane\-hp(5), sane\-microtek(5),
sane\-microtek2(5), sane\-mustek(5), sane\-umax(5)
sane-"backendname"(5)
.SH AUTHOR
David Mosberger

4
doc/sane-snapscan.man
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@ -1,4 +1,4 @@
.TH sane-snapscan 5 "27 July 2000"
.TH sane-snapscan 5 "08 Dec 2000"
.IX sane-snapscan
.SH NAME
sane-snapscan - SANE backend for AGFA SnapScan flatbed scanners
@ -81,6 +81,8 @@ Man page doesn't provide much information yet.
sane\-scsi(5)
.br
http://www.cs.ualberta.ca/~charter/SnapScan/snapscan.html
.br
http://sourceforge.net/projects/snapscan/ (new development website)
.SH AUTHOR
Kevin Charter, Franck Schneider, and Michel Roelofs