[Coco] Read coco disks on a PC

[Darren A]

On Thu, Mar 15, 2012 at 7:57 AM, John E. Malmberg wrote:
>
> While I have not had time to pursue this further, it means that the
> following is doable:
>
> 1. A program could be written on a PC or any other platform that supports
> 512 byte sector double density floppies to write the sectors on a double
> density disk so that the COCO could read them.  As the number of sectors on
> the disk get cut in half, it may have to mark them as unavailable in the
> gran table.  The program also has to realize that the COCO Basic program
> will only look at the first 256 bytes in the sector.
>

Not a good idea.  While the CoCo I/O routines will read 512 byte
sectors, they do not ignore the last 256 bytes.  All 512 bytes will be
read into memory even though the CoCo software has only allocated 256
bytes for the buffer.

Darren