[Coco] nitros-9

[Robert Gault]

mike delyea wrote:

> I downloaded the 6809 version of nitros-9 from sourceforge (several dsk
> images).  I can boot the 40 track version in mess by changing the extension
> to os9.  I can't boot it in DK's emu.  I have a 6309 dsk from Curtis 
> Boyle's
> site that I can boot (in 6309 mode) in DK's emu.  Using that I can format a
> real 40 track disk and backup the sourceforge dsks to it without error
> (remember, I'm not backing up the 6309 dsk but rather the 6809 dsk).
> However, the newly created real disk will not boot on my 6809 coco3 
> 512k.  I
> have successfully created (and booted) the regular os9l2 dsk images along
> with several games using DK's emu.  Why won't the sourceforge dsks boot in
> DK's emu and why won't the real disks I created boot in my coco?  Any
> suggestions or methods for getting nitros-9 working on my coco will be
> greatly appreciated.
> 

You can't use the NitrOS-9 distribution disks with the Kiel emulator 
because the image has a JVC not a DMK structure. There are several 
methods for making the conversion but the following will work.

Use MESS wimgtool to create an RSDOS dmk image with the required number 
of tracks to match the NitrOS-9 boot disk. Run MESS and boot NitrOS-9 
with that disk in drive#0 and the dmk disk in drive#1. Use dmode to set 
/d1 to the correct number of tracks (cyl) and format /d1. You can just 
do Format L  as only a logical format is needed. Then backup /d0 /d1 
and mount the new .dmk image in the Kiel emulator.