Date   : Fri, 05 Jan 2001 20:55:56 +0000
From   : jgh@... (Jonathan Graham Harston)
Subject: VFS: (BBC Video Disk) : Doomsday Project

Paul Wheatley <p.r.wheatley@...> wrote:
> This seems to be the only ROM in our working system. VFS was designed
> rather nicely, matching the functionality of DFSs and allowing a very
                                               ^^^^
No, ADFS.
 
VFS is more-or-less a recompile of ADFS with no 'write' code, and
different base number for the channels and osword calls.
 
            ADFS     VFS
FS Number     8      10
Channels   &30-&39   ?-?
Oswords      &70     &60   Read status
             &71     &61   Read free space
             &72     &62   Read/Write sectors
             &73     &63   Read last error
                     &64   Read current F-Code
 
Could somebody with a working VFS do:
 
*VFS
A%=7:PRINT~USR!&21E
 
and tell me the result.  Thanks.
 
-- 
J.G.Harston (JGH BBC PD Library) 70 Camm Street, Walkley, SHEFFIELD S6 3TR
jgh@...                - Running on BBCs & Masters with SJ MDFS FileServer
Z80+6502/CoPro+Tubes/Econet+SJ - - - - - - - http://www.mdfs.net/User/JGH/
                             Et In Arcadia Ego