NEWDOS86 MANUAL CHAPTER 1 - Page 1

                              CHAPTER ONE

                    OVERVIEW OF CHANGES TO THE DOS
		    
A number of enhancements have been added to NEWDOS80v2. These
include a Keyboard driver including Type—Ahead, a printer spooler,
an Automatic Disk Format Determination routine, full margin control
and an optional modified version of DEBUG which (when selected)
resides in high memory and allows single stepping through the DOS
itself.

Please note: Although you can now obtain DIR's and FREE's of TRSDOS
1.3 diskettes, ND86 is still incapable of handling these files in
the standard manner, but it will copy the files properly to ND86
formatted diskettes, so copy over your TRSDOS files to ND86
diskettes and use these copies.

The major objectives involved in upgrading NEWDOS80 were: Firstly,
that ND86 would still function satisfactorily without any of the
high memory routines installed. Secondly, any new features added to
ND86 should interfere as little as possible with any currently
written /JCL files or programs that do DOS calls. This hasn't been
totally achieved and the incompatibilities are listed below:

1) DOS COMMAND  The maximum DOS command is now limited to a length
                of 63 characters instead of 80. This was needed to
                provide storage for various parameters.
		
2) FORMS        WIDTH= is no longer a valid parameter. CH 1-13.

3) PURGE        The USR parameter is no longer allowed, but PURGE
                is greatly enhanced. CH 1-16.

4) DIR          In the STANDARD version, specifying an extension
                automatically activated both I and S options. In
                ND86, due to the implementation of partspecs, only
the I option is activated. If you wish to see the SYSTEM files, the
S option MUST be specified. CH 1-10.

The routines are selected by means of additional SYSTEM options, and
are installed at BOOT. SYSTEM option AP (HIMEM) is supported, and
the routines are loaded from this point downward in memory at BOOT.
If the <shift> key (Clear or F2 is preferable on a AP) is held down
while BOOTing, no routines are installed in high memory and, aside
from the changes noted, you are left with a standard NEWDOS80
SYS0/SYS (buffer length is still only 63 characters). If the <D>
key is held down at BOOT, the starting address of each routine
installed is displayed.

If the <shift> key is not held down, then, after the normal NEWDOSS6
initialisation has occurred, a routine is loaded from 5200H to 5A00H
which then installs the DOS enhancements in high memory. If the
<shift> key is used at BOOT, then the memory from 5200H to 5A00H is
NOT used. This allows you to DUMP this memory region to disk if
there is a need to preserve it and later re-examine it.

================ NEWDOS86 (C) 1986 W.S.& D.S.SANDS ================