[Coco] DriveWire - test results using the now free code
robert.gault at worldnet.att.net
Sat Mar 7 09:21:41 EST 2009
Boisy Pitre wrote:
> The NitrOS-9/6809 Level 2 image is up and available for download.
> Boisy G. Pitre
I had intended to wait until the 6309 version and perhaps the LevelI
versions were posted before reporting, however ....
Just tried the 6809 version which worked using my current arraignment of
starting the Coco DriveWire from disk rather than an EPROM. There are
several things to be aware of as a user running NitrOS-9 in this manner.
The default NitrOS-9 DriveWire version must be mounted in Winserver slot
#0 to boot. If you enter DRIVE#1:DOS with the boot disk mounted in
Winserver slot#1 you will see the kernel and os9boot files load, but the
boot process will fail. That would be of concern only if you wanted a
.vhd image in Winserver slot#0. It looks like the driver may be
defaulting to the equivalent of a scsi channel 0. Perhaps that is
adjustable in the /DD descriptor.
There are four new descriptors in the OS-9 version of DriveWire, /DD and
/X1-/X3. Each of these descriptors is set for a 32,768 sector, $400
track, 1 side, $20 sector per track .os9 image as reported by dmode and
free. That is very different from the standard .vhd image of $5A000
sectors with $5A tracks, $40 sides, and $40 sectors per track.
I was able to mount my .vhd image in Winserver as drive #1 and read the
OS-9 section correctly without changing the /X1 descriptor. However, if
I were going to use the .vhd image via DriveWire it would be much safer
to change the descriptor to match the .vhd image.
I have not yet tried to create my own DriveWire NitrOS-9 boot disk
residing on a .vhd image in the Basic partition.
More information about the Coco