---  THE LAST BYTE (tm)  ---

	"A DOS Extender for Chips & Technologies Motherboards"

			      Vers. 1.12
		      Revised: September 25, 1990
		 (Changes described in WHATSNEW.120)

				  by

			KEY SOFTWARE PRODUCTS
			   440 Ninth Avenue
		     Menlo Park, California 94025
			    (415) 364-9847

           Prodigy E-Mail Address: VGDC59A
        CompuServe E-Mail Address: >Internet:DLEWIS@SCU.BITNET
  E-Mail on Internet, Bitnet, etc: DLEWIS@SCU.BITNET

    -------------------------------------------------------------
    This is a replacement for a previous package called EXTENDER,
    which was also a product of Key Software Products.  If you
    are a licensed user of version 1.40 or later of EXTENDER, or an
    earlier version of LASTBYTE, you may use the same access key you
    already have to license this copy of LASTBYTE.  If you are a
    licensed user of an earlier version of EXTENDER, contact Key
    Software Products for a new access key at no cost.  Otherwise,
    see LICENSE.DOC to find out how to access ALL 384k of memory!
    -------------------------------------------------------------


The LASTBYTE software consists of the following 26 distribution
files.  Feel free to upload this package to any bulletin board, but
please be sure all 26 original (unmodified) distribution files are
included in the upload.

README.1ST	This text file.

WHATSNEW.112	A text file describing changes since version 1.11
WHATSNEW.111	A text file describing changes since version 1.10
WHATSNEW.110	A text file describing changes since version 1.00

LICENSE.DOC	A text file explaining how to license your copy of
		LASTBYTE and obtain your own personal access key that
		permits access to all 384k of high memory.  Without
		an access key, you will be able to try out all the
		features of LASTBYTE, but your access will be
		restricted to a maximum of 32k of high DOS memory
		and 32k of high Bank-Switch memory.

WARRANTY.DOC	A text file explaining the terms and conditions of
		the LASTBYTE warranty.

LASTBYTE.DOC	A text file explaining how to use LASTBYTE.

LICENSE.EXE 	This program modifies the file LASTBYTE.SYS to install
		your name and personal access key.

LASTBYTE.SYS	This device driver must be loaded before using any of
		the other software supplied with LASTBYTE.  It
		determines what high memory space can be used and
		initializes it.  If possible, it will also copy any
		Bios ROM it finds to Shadow RAM for faster execution.
		When finished with its initialization process,
		LASTBYTE relocates the resident portion of itself to
		high memory, leaving only 32 bytes of itself in DOS
		low memory.

HIGHDRVR.SYS	This device driver is used to load other device
		drivers into high memory.  Each use of HIGHDRVR.SYS
		leaves only 112 bytes of itself in conventional memory
		in order to connect the device driver (that was
		loaded into high memory) to the operating system.

HIGHDISK.SYS	This device driver implements a RAM disk in High
		Memory.  (The driver itself may be loaded into high
		memory by using HIGHDRVR.SYS.)

HIGHEMS3.SYS	A pair of device drivers that emulate Expanded Memory
HIGHEMS4.SYS	in High Memory.  HIGHEMS3 is compliant with LIM spec
		3.2; HIGHEMS4 is compliant with LIM spec 4.0.  (Either
		may be loaded into high memory by using	HIGHDRVR.SYS.)

HIGHUMM.SYS	A device driver that application programmers may use
HIGHUMM.DOC	to access high memory from their own programs.  For
		a detailed specification of the software interface,
		see the information in the file HIGHUMM.DOC.  (See
		LASTBYTE.DOC for information on using HIGHUMM.SYS with
		the shareware COMMAND.COM replacement called 4DOS.)

HIGHTSR.EXE	This program is used to load TSR's into high memory.
		Once the TSR has been loaded, this program completely
		removes itself from memory.

HIGHINST.EXE 	Exactly like HIGHTSR, except used with the "INSTALL="
		command in a CONFIG.SYS file.  (With DOS 4.01, this
		now makes it possible to load SHARE.EXE into high
		memory.)

HIGHMARK.EXE	Used to mark TSR's so that they may be removed from
		high memory at a later time.  If possible, the mark
		is placed in Bank-Switch memory where it has no effect
		on the amount of memory available for TSR's and device
		drivers.

HIGHUNDO.EXE	Used to remove TSR's (and the associated mark) that
		have been marked with HIGHMARK.

HIGHMEM.EXE	Displays a map of high memory usage.

HIGHGFX.EXE	Used to enable or disabled the use of the EGA/VGA
HIGHGFX.SYS	graphics display area (A0000-AFFFF).  This allows
		you to dynamically switch between using this memory
		for high-resolution graphics or to increase
		Conventional DOS memory up to 736k.

HIGHBFRS.EXE	Used with DOS 3.xx to put the DOS buffers (i.e., as
		in the "BUFFERS=" command of CONFIG.SYS) into High
		Memory.

CLOCK.EXE	A TSR to display the current time in the upper left-hand
		corner of the screen.  Requires ANSI.SYS.

COLS.40,80	Text files to be used to verify that ANSI.SYS has been
		installed and is operating properly.


--------------------- End of file README.1ST ---------------------