MANUAL FOR CWDIR (6502 Machine code)

This file describes the program CWDIR which reports to the user the currently 
selected directory on receipt of a *DIR command with no drive number parameter 
(this doesn't normally do anything - not even cause a Bad Drive error).For use
on 8 bit BBC series of microcomputer,this may be called from any program that 
allows access to the OSCLI,eg.the main menu screen in a wordprocessor often 
does.
The manual and software is (C)1997 SPROW

INSTRUCTIONS-
At any command line prompt,eg.the BASIC command prompt '>' type *CWDIR

The program will then install itself into page &C00 (the CHR$ defn buffer on 
the BBC and Electron,or Econet workspace on the Master) where it will receive
all future *DIR commands and check them.Pressing BREAK will stop the program 
intercepting star commands.

EXIT MESSAGES-
"No directory" - the TAPE and ROM filing systems don't allow directories

KNOWN PROBLEMS/FUTURE ENHANCEMENTS-
No known problems
Repointing of the 'reset' vector,to allow the pressing of BREAK,as for example 
may be performed when pressing BREAK-SHIFT to boot a disk.

HISTORY-
V1.00 First release version,to the Solinet BBC disk user group.
V1.10 Added support for drive names that aren't one letter - previously a drive
      name was assumed to be one letter (as in ":0.$.filename"),and if this
      was not the case print formatting errors ocurred.
V1.20 Tests for the FS id,and checks whether the current FS allows directories.
      If not then the error "No directory" is flagged (ERR=&A9)