[Coco] RGBDOS for the JC/JV Emulator

John Donaldson jadonaldson at charter.net
Thu Aug 12 17:48:28 EDT 2004


  I made a new  6809 emulator directory and installed RGBDOS. It  
installed just fine and
everything looks good. I did notice one thing. I unzipped and copyed the 
6809 NitrOS9 DSK's
to the new direcotry. Set the emulator so that disk0 pointed the the 
DS40_1.DSK and disk1
pointed to the DS40_2.DSK. Typed "DOS0" and got a OK back. NitrOS9 disk 
did not
boot.
   I then copyed all the ROM files to a backup direcotry. copied my OS9 
boot ROM,
COCO3.ROM from another directory that I use to boot 6809 NitrOS9. I made 
sure the
40Track NitrOS9 disks were in drive 0 and 1, Restarted the emulator and 
NitrOS9 booted
just fine. this rom has been patched to look first at track 68 if a 80 
track DSK is present or
Track 34 if it is a 35/40 track DSK.
    I then saved this COCO3.ROM and used OS9BOOT.MOR and made a copy of it
and called it COCO3.ROM. I reset the emulator and when it executed,  OS9 
failed to boot.
     I then copied the two NitrOS9 files over tot he emulator directory 
that I run 6809 Basic
from. I again set the DSK's to drive 0 and 1. Started the emulator, 
typed "DOS" and all I
got was a "OK". NitrOS9 did not boot.
    When I did get the DSK's to boot, I did a DIR on /d1 and got 
NITROS9, which is
correct. I then typed DIR /D1 NITROS9 and got /D1/NITROS9/6809L2, which 
again is
correct. I then typed DIR /D1/NITROS9/6809L2 and got /D1/NITROS9.   Just 
to make
sure that I did not have a bad copy, I used my MSDOS machine and went 
back to the
NitrOS9 Project web site and redownloaded the files all over again. Got 
the same results to
the various tests. The 80 Track DSK works fine after I reset the offset 
from 07 to 06.
   This brings me to a question, do I need to reset the 40 track DSK 
offset from 03 to 02??

John Donaldson





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