[Coco] CoCoSDC and 42 track disks.

[camillus.b.58 at gmail.com]

My setup in the old days, was 2 double sides TEAC drives 40/80 track switchable.

The switch was a mod on the drive itself,  It had to do with placing a extra resistor.

I never got really into OS9 back then, so I used it merely in diskbasic. I do have still my original diskcontroller, with coco3 seb and switchable to Ados 

i think. It boots up with black background 80 column and say’s AARDVARK.


cb








Sent from Surface





From: Richard E Crislip
Sent: ‎Thursday‎, ‎December‎ ‎4‎, ‎2014 ‎10‎:‎59‎ ‎PM
To: CoCoList for Color Computer Enthusiasts





On Thu, 4 Dec 2014 10:01:49 -0600
Allen Huffman <alsplace at pobox.com> wrote:

> Disk Extended Color BASIC defaults to 35 tracks (156K?) for disk
> drives. Later floppy drives (sold third party, and then by
> RadioShack) were 40 track (180K) drives, but Disk BASIC was never
> expanded to support it.
> 
> There were patches available to let Disk BASIC use 40 track drives
> (and even 80 track 720K), so most all of my Disk BASIC floppies are
> 40 tracks.
> 
> At some point, I learned that many drives could actually support more
> than 40, and mine worked reliable at 42 tracks, so I very well may
> have a ton of floppies that are formatted to 42 tracks.
> 
> Does CoCoSDC support this?
> 
> Likewise, there were patches to use 80 track drives (360K per side)
> but if I recall, this broke some compatibility with BASIC due to
> needing more memory or something. I had two 80 track 5 1/4" drives at
> one point, but I think I only used them under OS-9. (Wow, think of
> the storage. A 360K boot drive, plus two 720K other drives. I had
> over a megabyte... Wild.)
> 
>   -- Allen
> 

Thanks for asking that question. I am very much in the same boat. In
fact I quit copying my real disks when I realized all was not being
copied. The copies stopped consistently at 629 regardless of what the
disk was. 8-/.

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