[sane-devel] HP ScanJet 4p (SCSI ncr53c400a) Solution
Sun, 12 May 2002 21:54:47 +0400
> > I've got the HP ScanJet 4p with SCSI card on SymbiosLogic ncr53c400a chip
> > And I have a big trouble with it :(
The solution has been found and I think, what it should be posted to this
mail-list for all people, who search through archives for the answers.
I`ve found the posting of Stephen R. van den Berg to the linux-scsi mail-list:
~~~ Start ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
FROM: Stephen R. van den Berg
DATE: 04/03/2000 12:08:32
SUBJECT: RE: Re; ncr53c400a
Actually, I disassembled the mini400i.sys driver, and found the
magic incantation which enables the HP-card and maps it into the
The mapping seems to work just fine. The only part I`m still struggling
with is the fact that the NCR5380.c driver appears to be *hopelessly*
safe (and I happen to be running an SMP box).
In case anyone cares (I`ll be including this in an official patch
later, which also fixes the SMP-compliance, I hope), this is what the
HP card needs to get mapped at port 0x280:
/* wakeup sequence for the HP-NCR53C400A */
~~~ End ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
And what's you should do for the card to work:
1. Replace wakeup sequence in /usr/src/linux/drivers/scsi/g_NCR5380.c as
2. Compile the driver:
gcc -I/lib/modules/$(uname -r)/build/include -Wall -D__KERNEL__ -DMODULE
-O2 -c -o g_NCR5380.o g_NCR5380.c
3. Check it:
# insmod g_NCR5380.o ncr_53c400a=1 ncr_addr=0x280
The card should work now, as written in all READMEs, HOWTOs and so on.
> I don't have HP scanners, but some Mustek scanners also use NCR53c400a
> chips. I always use this line:
> modprobe g_NCR5380 ncr_addr=0x280 ncr_53c400a=1
Yes, it worked after I had applied the patch.
> > There is one jumper on the card (unlabeled). I tried to change it, but
> > there wasn't any effect.
> Maybe enable/disable IRQ?
Who knows ? :-/
Thanx for your help !
Best regards, Anastasija (aka WhiteUnicorn)
Welcome to http://Anastasija.virtualave.net