[BBC-Micro] Technomatic hard disk units

[Andrew Benham]

Jonathan Graham Harston wrote:

> However, the OSWORD &72 interface does need the
> drive to contain a valid ADFS root system before it will allow any
> access to it. You can't even write a blank filesystem with OSWORD
> &72 if there isn't already a filesystem there!

This isn't what I've found.  If if was true, then SuperForm would
never be able to work since it uses OSWORD &72.

I've just powered my Master on, without the hard disk, and
with no floppy in either drive.  Then I did a *FADFS, put
a old 5.25" MS-DOS 4.0 disk in the floppy drive, used Exmon II
to create an OSWORD &72 parameter block to read one sector
from drive 0, and called OSWORD &72.  The floppy drive
powered up, OSWORD returned 00, and I had a 512-byte sector
from the MS-DOS disk at the memory location I requested.

I'd suggest that a 5.25" MS-DOS 4.0 disk doesn't have a valid
ADFS filesystem on it.


-- 
Andrew Benham         adsb at adsb.co.uk
Southgate, London N14, United Kingdom

The gates in my computer are AND OR and NOT, not "Bill"