On Thu, 25 Jul 2002 16:54:30 +0100, Luke Trevorrow
<[EMAIL PROTECTED]> wrote:

> I too have had good fun using the Atom HD emulation, but agree that the
> system is limited to emulating the running environment (which admittedly is
> what SIM Coupe is for).
> 
> Why does BDOS work on a floppy by floppy basis? Is it some limitation with
> the SAM Coupe that stops you from having one big disk like on a PC?
> 
Yes, the disk directory structure is fixed to expect 80 tracks of 10
sectors or 510 bytes.  There is a 195 byte (1560bit) area in each file
header which holds a bit map of the sectors used by that file.

To avoid the need to create a new more complex directory structure
(like what HDOS did) BDOS just maps the hard disk as many floppies.

hth

Nev - who has almost finished scanning the tech manual.


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