[Coco] HDBDOSDW3CC1

Little John sales at gimechip.com
Wed Sep 8 12:15:26 EDT 2010


Tandy never supported anything other than Single-Sided 35 Tracks under DECB 
for the entire life of the CoCo. The FD-502 was actually the only 
double-sided drive ever offered by Tandy for the CoCo and they supported it 
as up to DSDD 40T under OS-9 Level 2, although OS-9 L2 was SSDD 35T out of 
the box. I would therefore assume that the DriveWire protocol was limited to 
the normal SSDD 35T for maximum compatibility with machine language 
programs, etc.
-Big John
----- Original Message ----- 
From: "Mark McDougall" <msmcdoug at iinet.net.au>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Wednesday, September 08, 2010 10:47 AM
Subject: Re: [Coco] HDBDOSDW3CC1


> On 9/09/2010 1:41 AM, Michael Graham wrote:
>
>>  From what I understand, all forms of Disk Basic need to be patched to
>> support disk sizes other than 35 tracks. I'm not sure what the process is
>> and what needs to be changed though, so perhaps someone else could 
>> enlighten
>> us there.
>
> OK, thanks! That makes sense and I was hoping that that was the case!
>
> Regards,
>
> -- 
> |              Mark McDougall                | "Electrical Engineers do it
> |  <http://members.iinet.net.au/~msmcdoug>   |   with less resistance!"
>
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