# ppSCSI and Microtek Phantom 330 CX

Camille DIOU (diou@lirmm.fr)
21 Sep 1999 17:52:18 +0200

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Hi all,

I've been looking the mailing-list archive to get my Phantom 330 CX
working until Linux. I found what I was looking for, but there are
still some problems.

First, I attached the ppscsi 0.91 patch to my 2.2.10 kernel. I also
applied the patch (thanks to Michele Bini) I found in the
mailing-list Juny archive to the microtek2 backend source.

That seems to work. When I load the onscsi module, I get the following
message :

[root@localhost scsi]# insmod onscsi
onscsi.1: onscsi 0.90 (0.91), OnSpec 90c26 at 0x378 mode 0 (Nybble) dly 1 nice
0 sg 16
scsi0 : onscsi
scsi : 1 host.
Vendor: Model: scanner 330CS Rev: 1.26
Type: Scanner ANSI SCSI revision: 02
Detected scsi generic sga at scsi0, channel 0, id 2, lun 0
[root@localhost scsi]#

Also, 'find-scanner' responds:

[root@localhost /root]# find-scanner
find-scanner: found scanner " scanner 330CS 1.26" at device /dev/sg0
find-scanner: found scanner " scanner 330CS 1.26" at device /dev/sga
[root@localhost /root]#

All right, but :

- scanimage doesn't work. The message I get is identical to those I
could have read on the Juny archive concerning the Phantom 330/336
CX. The only difference is that the revision number is 1.26.
The scanner doesn't scan anything but goes forward and backward for
2 or 3 cm, never more (even if the 'no-backtrack-option' is set to
'on' in microtek2.conf), until the programm die a few seconds
later. All what I get is:

[ ... I cut the scanner-ID output ... ]
P6
# SANE data follows
612 838
255
onscsi.1: PDMA timeout, bs=11 cb=10 db=1842 bu=1 sg=0 rd=1 lp=31 pe=0 cc=41
onscsi.1: Arbitration failure, bs=11 cb=0 db=1842 bu=0 sg=0 rd=1 lp=0 pe=0 cc=42
onscsi.1: Bus reset
onscsi.1: Arbitration failure, bs=31 cb=0 db=1842 bu=0 sg=0 rd=1 lp=0 pe=0 cc=43
[root@localhost scsi]#

After that, I have to unload the onscsi module, turn off the
scanner and then on, and last reload the module.

- xscanimage works better, but I have the same problems as Michele Bini:
* I also have an offset around 15-20 mm (at 24bpp)
* the preview is working well but the head doesn't stop and hits
the upper side of the scanner: I must turn off the scanner by hand.
* the acquisition itself does work well too, but when finished, the
head comes back to the bottom side, doesn't stop, and hits it.

Note that with xscanimage, the no-backtrack-option seems to work well.

Thus, some questions now.
How could you explain that xscanimage (almost) works, but scanimage
doesn't ? How to get it working ?
Is there any way to avoid the head hitting the borders of the
scanner? (I didn't find any solution in the archive since Juny).

Thanks a lot for the help you can give me.

    --
    Regards,

    Camille Diou

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