CompuPro floppy controller differences

[Allison]

>
>Subject: RE: CompuPro floppy controller differences
>   From: "Chuck Guzis" <cclist at sydex.com>
>   Date: Mon, 11 Sep 2006 09:19:56 -0700
>     To: cctalk at classiccmp.org
>
>On 9/11/2006 at 8:02 AM Allison wrote:
>
>>The manual says two tracks on 8" and 3 tracks on 5.25 with track 00 being 
>>128 byte single density only.  NOTE the manual says tracks not cylinders.
>
>All I can relate to you is the number of cylinders before the directory.
>What CCS uses the extras for is anyone's guess.  My 8" CCS sample is DS MFM
>and reserves 4 cylinders for boot.
>
>Cheers,
>Chuck

Interesting, I have both SSSD, SSDD and DSDD media for my CCS system and
none exceed 2 tracks for 8".  I have no 5.25" so I cant speak for those.
The DSDD media I have uses the first two tracks of side 2 for data and the
organization if 2 tracks side 1 reserved and the next 75 tracks are data
wrapping around to side 2 (77tracks).  The software is as supplied from 
CCS to format that media.  I wonder if CCS did a change or switch gears
on their format?

I do know it reads SSSD CP/M standard without issues.

My CCS system is 2200 crate with 2501 backplane, 2810 Z80 cpu, 
2710 4 port serial, 2704 bus terminator and 2422 FDC.  The 
only non CCS part is  the Compupro Ram16.  It's a really 
nice system, well documented and very complete software 
when I got it.  I was used for a development platform for 
another CP/M system.  The most recent date code on anything
in the crate is early 1981 so I figure it's from around then.
I don't know if this is an early version or later.


Allison