I neglected to mention that I am trying to boot a Power Mac 7500 running
a 604 processor and trying to boot to NetBSD 1.5.
The ROM version on the Power Domain 2940UW controller is 3.0, though I
wonder if it is really installed, since no "words" are obtained from the
controller under querying with Open Firmware.  I have not tried to flash
it to version 4.1.  Might that help?

Shouldn't there be a way to boot without the boot rom, using Open
Firmware entirely to load the boot file from track 0 that would load
netbsd and run it?  I suspect that Apple does it that way with
/AAPL,ROM, which is why it boots MacOS from the 2940UW.

Jim Nelson


Donald Lee wrote:

>The 2940UW has not been updated in some time, unlike Adaptec's
>more recent products (like the 29160 or 2930).  These more recent products
>have had to get updates to properly handle the newer Macs, in
particular the
>"ROM in RAM" architectures.

>My bet would be that the 2940UW works well enough to boot MacOS,  because
>that is what it was built to do, but is not quite "correct".

>-dgl-

At 8:30 PM -0500 4/2/01, jimtnelson@earthlink.net wrote:
>I have a Power Domain 2940UW controller that I can boot MAC OS8.5.1 from
>without any trouble.  However, I can not boot NetBSD from it.
>
>Under OF, when I do a "dev /bandit/ADPT,2940UW" I get an "ok".  When I
>enter "words", I also get an "ok", but no "open".  As far as I can tell,
>the controller should not boot the disk, according to the literature and
>FAQ.  When I try to boot NetBSD from OF, I just get a statement that I
>cannot open the disk.
>
>As a test, I repartitioned the same Barracuda 4Gig disk and installed
>MacOS 8.5.1, and it boots just fine! I understand that if I can boot Mac
>OS from the device, I should be able to boot NetBSD.
>
>Settings for OF are:
>
>"setenv boot-device /bandit/ADPD,2940UW@6:0"
>"setenv boot-file netbsd"
>"setenv load-base 600000"
>"setenv real-base F00000"
>
>I am using the modified system disk utility, and all that stuff. I got
>this system, NetBSD, to run off a La Cie scsi Jaz drive, using the
>internal scsi controller just fine, so I have a lot of experience with
>OF and macppc now.  Also running the i386 version for a couple of years.
>