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README.1ST
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1990-10-25
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--- THE LAST BYTE (tm) ---
"A DOS Extender for Chips & Technologies Motherboards"
Vers. 1.14
Revised: October 24, 1990
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 28 distribution
files. Feel free to upload this package to any bulletin board, but
please be sure all 28 original (unmodified) distribution files are
included in the upload.
README.1ST This text file.
WHATSNEW.114 A text file describing changes since version 1.13
WHATSNEW.113 A text file describing changes since version 1.12
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.
HIGHAPND.EXE Used to enable/disable an extension of DOS conventional
HIGHAPND.SYS memory beyond 640k up to 704k or even 736k, depending
on your hardware configuration. If an EGA or VGA
adapter is installed, HIGHAPND will also
automatically disable/enable EGA/VGA hi-resolution
graphics as necessary.
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 ---------------------