[Coco] NitrOS-9 Cobbler Problems
jcewy at swbell.net
Sun Jan 3 23:58:50 EST 2010
Bob Devries wrote:
> If cobbler has done its job right, then you shoul see $4F53 at the
> beginning of sector $4C8 on a 720K disk.
> If it's not there, then cobbler failed somehow.
> Be sure that your descriptors are properly set before you use cobbler.
> I'm assuming you're using a virtual disk with HDB-DOS? Do you have the
> DRIVE ON/OFF command set to make drive 0 the virtual drive instead of
> the real one?
Thanks for the response, Bob.
I'm using only virtual disks at this point, though I have been able to
access the real floppy drives using the /d0 and /d1 device descriptors.
I wouldn't think that HDB-DOS' DRIVE ON/OFF command would have any play
in OS-9. But in any case, I'm booting OS-9 immediately on power-up, so
I don't think that's relevant.
I'm not quite sure how to check the contents of sector $4C8. Would that
be the proper LSN if I use 'ded' on the whole disk?
> I'm sure there's other issues, but that's all I can think of right now.
> Besides a mathematical inclination, an exceptionally good mastery of
> one's native tongue is the most vital asset of a competent programmer.
> Edsger W.Dijkstra, 18 June 1975
> ----- Original Message ----- From: "Joel Ewy" <jcewy at swbell.net>
> To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> Sent: Monday, January 04, 2010 3:08 PM
> Subject: [Coco] NitrOS-9 Cobbler Problems
>> Hey everybody,
>> I've been working on a demonstration of using 8-bit composite (NTSC)
>> artifact colors that I'd like to distribute as a 720K NitrOS-9 disk
>> image file, bootable over Drivewire 3. (I may also make a version
>> that will boot from a regular 720K floppy.) The slideshow is all
>> ready to go, but I'm having problems making a bootable disk image.
>> I started with a NitrOS-9 image file that, IIRC, was distributed with
>> Drivewire. It is 'nos6809l2.dsk'. I made some other disk image
>> files using the Toolshed tools (os9 format -ds -t80 diskname.dsk) and
>> copied my converted image files onto them, then loaded them up into
>> the Drivewire server. No problem.
>> Then I made another blank image the same way, and immediately used
>> cobbler to put an OS9Boot file on the disk. Doesn't cobbler add the
>> proper code to the boot track? I copied a shell, merged with a few
>> utilities, grfdrv, and sysgo. I tested it by hitting reset, and
>> (after I got all the appropriate files copied) it seemed to boot and
>> run the slideshow.
>> However it doesn't boot cold. After typing 'DOS' HDB-DOS simply
>> returns to the 'OK' prompt. So it seems as if the boot track is not
>> being laid down. I tried 'os9gen -q=os9boot' and I tried deleting
>> the OS9Boot file and re-running cobbler, but neither of these things
>> made any difference. What am I forgetting?
>> I'm almost done with this demo... So close... Need to get some other
>> work done... :-)
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