[Coco] CoCoTracker 6809 bug/issue

[Bill Pierce]

Sean, after further investigation, I've found that CocoTracker actually pokes the drive number into a location in the DECB rom (in a Coco 3 it resides in ram and can be edited)
A check is made for DECB 1.1 or 1.0 and the poke is done accordingly.
So, if the Drivepak and CocoSDC roms are not compatible with RSDOS in that particular rom location, then a drive change would fail.
Both RGBDOS and HDBDOS use the RSDOS rom and only modify it to their needs so they work fine.
I have no clue how Drivepak and Cocosdc roms are set up so this could very well be your problem. Not CocoTracker, but the compatibility of the roms in your drive emulators.

Given the location of the same value in the drivepak and cocosdc roms, changes could be made in the CocoTracker basic program to make it work with drives other than 0.
The reason it works with drive 0 is that it checks the current drive and if it's 0 it does not do the poke.
The disk access is done via DSKI$ command for direct loading of the mods so that they can be loaded into the upper banks of the 512k memory one bank at a time.
 

Bill Pierce
"Today is a good day... I woke up" - Ritchie Havens
 

My Music from the Tandy/Radio Shack Color Computer 2 & 3
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-----Original Message-----
From: Sean <badfrog at gmail.com>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Thu, Mar 26, 2015 12:00 am
Subject: [Coco] CoCoTracker 6809 bug/issue


I have discovered a problem with Sock Master's 6809 version of
CocoTracker.  (I
can't test the 6309 version since I don't have a CoCo with
one)

I was wondering
last year why it wasn't able to load songs that I had on
drives 1,2, or 3 with
the Drive Pak.  They would never show up.
However, playing around today with the
CoCo SDC, I was able to determine it
never actually looks at those drives, only
drive 0.  If I copy a .mod file
from drive 1-3 to 0, and then run the program,
it shows up.  If you choose
any other drive from the in-program menu, it still
only shows the file from
drive 0.

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