[254] in linux-scsi channel archive
NCR8150S and PCI problems
daemon@ATHENA.MIT.EDU (Jay F Kusler)
Fri Jun 16 10:18:45 1995
From: kusler@cps.msu.edu (Jay F Kusler)
To: linux-scsi@vger.rutgers.edu
Date: Fri, 16 Jun 1995 09:08:05 -0400 (EDT)
Hi all,
I am trying to install an NCR8150S board into my P90. I got the 815
chip because I have a Phoenix BIOS that does not have NCR support.
Upon booting, the NCR BIOS is seen and read just fine. If I boot
Linux from lilo, the messages I get are:
scsi-ncr53c7,8xx : at PCI bus 0, device 13, function 0
scsi-ncr53c7,8xx : warning : revision of 3 is greater than 2.
scsi-ncr53c7,8xx : NCR53c815 at memory 0x10000000, io 0x3000, irq 255
scsi0 : IRQ255 not free, detaching
scsi : 0 hosts.
scsi : detected total.
I have the NCR card in PCI slot 0: when I put it into slot 1, the only
difference is that the device is 14 instead of 13. I have read the
HOWTO, and mention is made of INTA, INTB, etc. I don't know what this
means. I called Micron about the IRQ lines, and apparently the first
PCI device found in the slots is assigned IRQ 15, the second is IRQ
11. When I boot DOS, this seems to be confirmed, at least for IRQ 15.
It was recommended to be to put the NCR board in the second slot, with
my video card into the first slot if I wanted to use IRQ 11 instead.
Both variations still tried to use IRQ255. I wanted to use the
"hd=..." options to lilo hoping to force use of the correct IRQ, but
that is only for IDE drives.
I have 2 IDE drives already, and this will be the first (and only)
SCSI drive. It is terminated properly, and identified as SCSI device
0.
What do I need to do to get this running under linux?
Any help will be greatly appreciated! I'm in over my head here.
Thanks.
Jay
----------------------------------------------------------------------------
Jay F. Kusler | No regrets Coyote
kusler@cps.msu.edu | We just come from such
| different sets of circumstance
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