Personal Protocol Library
                        For Turbo Pascal

                           (PCL4P)

                           Version  1.0
                           Jan 15, 1995

                 This software is provided as-is.
          There are no warranties, expressed or implied.

                       Copyright (C) 1995
                       All rights reserved

                       MarshallSoft Computing, Inc.
                       Post Office Box 4543
                       Huntsville AL 35815

                       Voice 205-881-4630
                       FAX   205|880|0925
                       BBS   205-880-9748


The  Personal Protocol Library for Pascal (PPL4P) consists of ASCII,
XMODEM, YMODEM, and ZMODEM protocol routines plus the example terminal
program  TERM and  support  routines such as CRC calculation codes.
Source is supplied for all routines.

The PPL4P also requires the Personal Communications Library (PCL4C).

The library is composed of two parts as follows:

(1)  The  copyrighted  XMODEM, YMODEM, and ZMODEM functions contained 
in the files:

  xymodem.pas
  xypacket.pas
  zmodem.pas

(2) The public domain example code contained in the files:

  term.pas     term_io.pas    amodem.pas    modem_io.pas
  crc16.pas    crc32.pas      defines.pas   si.pas
  opcodes.pas  zdate.pas      datetime.pas  dir_io.pas

The API (Application Programming Interface) is documented for the
following four protocols: ASCII, XMODEM, YMODEM, and ZMODEM.

TERM is an communications program suitable for  calling  up  bulletin
board systems  (BBS)  and performing as a PC to PC file copy program.
TERM itself is not part of the communications library, but rather it
is provided as an example of a communications application using PPL4P.


Other MarshallSoft Computing Products for Pascal
------------------------------------------------

The Personal Communications Library for Pascal

The Personal Communications Library for the Pascal (PCL4P) is an
asynchronous communications library designed for experienced
software developers programming in Turbo Pascal.


The LZW Data Compression Library for Pascal

LZW4P consists of a variable code size implementation of the LZW
(Lempel-Ziv-Welch) algorithm for compressing and decompressing data.
LZW does particularly well on text files, achieving better than
a 50% compression ratio for many files.