[Coco] 40 track floppies and DriveWire

[Todd Wallace]

oh wow. how do you get rgb-dos running along side a floppy controller? does that method require using a MPI ? or perhaps a cassette player to load the rgb-dos driver?

- Todd Wallace

On May 18, 2010, at 7:36 PM, Darren A wrote:

> On 5/18/10, Allen Huffman wrote:
>>> BACKUP a 40 track floppy to the first 720 sectors of a DSK file.
>>> 
>>> POKE &HD286,40
>>> POKE &HDA42,32
>>> 
>>> The first POKE changes the track count for the BACKUP command to 40.
>>> The second POKE prevents DriveWire from accessing more than one
>>> virtual floppy disk within a DSK file. This avoids the problem where
>>> writing to DRIVE 1 would start at the 630th sector in the DSK file.
>> 
>> Could you explain more about the second POKE? I was extensively familiar
>> with RGB-DOS years ago, but if I understand you, this would do it, but you'd
>> effectively have to "not" use DISK 1 in the virtual HD array (and remember
>> not to do that)...?
>> 
> 
> The 2nd POKE essentially allows you to to do a BACKUP from real floppy
> drive 0 to virtual floppy 0 in the DSK file.  Without this POKE you
> end up with a DSK file containing an empty 35 track image as virtual
> floppy 0 followed by your 40 track image as virtual floppy 1.
> 
> Using a 40 track DSK file under DriveWire is a different problem
> altogether.  This solution is only for archiving the floppies.
> 
> Darren
> 
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