Index of /FreeBSD/FreeBSD-current/xperimnt/aha2920

      Name                    Last modified       Size  Description


[DIR] Parent Directory        14-Mar-2007 16:41      -  
[TXT] boot.flp                15-Oct-1997 11:44   1.4M  
[   ] tmc18c30-sysdiff.gz     15-Oct-1997 11:44    21k  

This is an experimental SCSI driver for the Future Domain 18c30 (now
Adaptec AHA2920) SCSI controller series.  The driver has been contrib-
uted by Michael Ranner <rmike@sbox.tu-graz.ac.at>, who assembled it
from pieces of the PAO distribution.

This driver uses a different low-level SCSI interface than normal
FreeBSD SCSI drivers that sneaked in from NetBSD via PAO.  This is
the main reason why I (joerg) never could make up my mind to import
it into the main FreeBSD tree; the code duplicates some of the existing
FreeBSD code in functionality, and it ``doesn't quite fit'' into the
remaining framework.

However, the driver basically works, so I figured it would be a useful
addition to the /xperimnt section of the FreeBSD 2.2.5 CD-ROM.  The
only observed bug so far is that it totally jammed in a machine wiht
a dead TMC18c30 controller (even though it detected the hardware fail-
ure of the controller).

To install the patch, do the following:

	cd /usr/src
	mkdir sys/i386/scsi/tmc18c30 sys/i386/scsi/scsi_low
	zcat /cdrom/xperimnt/aha2920/tmc18c30-sysdiff.gz | patch

After patching, you'll find a file /sys/i386/conf/GENERICAHD that is a
regular GENERIC kernel config file, with the `ahd' controller added.

I'm also providing an untested installation floppy in this directory,
which has been built using the 2.2.5-BETA sources from Oct 13, 1997,
with this patch applied.

Dresden, October 15, 1997		Jörg Wunsch
					<joerg@FreeBSD.org>