
                       Welcome to BeebDOS  v2.02!
                       --------------------------

   This document is intended to provide information about BeebDOS extra to that
covered in the BeebDOS Manual. The information is in the form of a list
(see below) and covers alterations, errors, extras and items which were not
available at the time of going to press.

1.      To improve the file transfer speed (especially with Watford and Opus
        BBC diskette formats) and avoid disk timeout problems when using
        BeebDOS on a fast AT 286/386 machine, BeebDOS 2.02 adjusts to the
        computers processor speed for all time critical events. The speed
        adjustment takes place when the utility "BDOS" is run. If you switch
        your PC processor speed (eg 6/8/10/12/16/20 Mhz) you will need to
        re-run BDOS before using the BeebDOS utilities.

2.      BeebDOS 2.02 contains partial support for the IBM PS2 computers as
        follows:

        a.      BBC single density diskette formats are not supported.
        b.      model 30 - all BeebDOS utilities may be used but disk fault/
                           timeout problems may occur with Watford and OPUS
                           diskettes.
        c.      model 50/60/80 - Same as the model 30 except the BFORM
                           utility is not supported.

2.      When running BeebDOS on an AT or equivalent machine the following
        problem can occur:
        If you cause DOS to attempt reading a BBC disk and fail with the abort
        retry ignore message, subsequent attempts by BeebDOS to use the same
        drive will fail with a disk fault message.
        e.g.
        DIR A:                  when there is a BBC disk in drive A
        BCAT :0;                this will now display disk fault
        This happens because DOS corrupts the drive/media information held in
        the system when it fails reading a BBC diskette, and the BeebDOS
        utilities rely on this information to read and write BBC disks.
        To remedy this problem use DOS to access the drive with a valid DOS
        disk in the drive. Subsequent use of this drive by BeebDOS will now
        be O.K.

3.      When using BCOPY with ADFS disks there is an extra parameter "IBM
        extension to be used". This parameter is only used when copying files
        from IBM to ADFS disk. It is intended to avoid duplicate file names
        being used on the ADFS diskette. Type "Y" to use the IBM name and
        extension in the ADF name (e.g. letter.doc will become letterdoc), and
        type "N" to ignore the IBM extension (e.g. letter.doc will become
        letter).

4.      BeebDOS release 1.10 to release 2.01 enhancements:
        a.      Support for BBC ADFS diskettes.
        b.      Path names can be used in both IBM and ADFS file names.
        c.      Three extra ADFS utilities BMAP, BCDIR and BDIR.
        d.      BGRAPH will now display BBC mode 0,1,4 and 5 screens on
                EGA and Herculese (as well as CGA) displays.
        e.      BeebDOS is no longer "case dependant" with BBC file names.

5.      BeebDOS release 2.01 to release 2.02 enhancements:
        a.      A friendly program called "BEEBDOS" is now included which
                allows the BeebDOS programs to be selected from a menu. To
                run this program type BEEBDOS from DOS. 
	b.	BGRAPH supports more IBM display/graphics adapters as follows:
		CGA    - Standard graphics adapter
		HGC    - Herculese graphics adapter
		EGA    - Enhanced graphics adapter, Video graphics array (VGA)
                         640 x 350 RES, 16 colour
		EGH    - Super EGA and VGA
                         640 x 480 RES, 16 colour
        c.      BGRAPH will now display mode 2 BBC screens and full 16 colours
                are displayed on IBM EGA and VGA screens. The colour and
		resolution is reduced on IBM CGA and Herculese adapters.

6.      Please note that IBM 360k drives are double sided 40 track disks and so 
        only BBC 40 track formatted disks are fully supported in these drives.
        Only the 1st track of an 80 track disk can be read or written to in
        these drives. BCAT will be able to display the catalogue (only the
        root for ADFS) of an 80 track disk but all other BeebDOS utilities will
        usually fail.
