*** SHAREWARE DOCUMENTATION ***

The  Personal  Communications  Library  for Turbo and Borland
Pascal (PCL4P) is  an  asynchronous  communications  library
designed  for experienced  software  developers  programming  in
Turbo or Borland Pascal. The PCL features:

-  Supports protected mode.
-  32 communications and support functions.
-  Support for the high performance INS16550 UART.
-  Supports hardware (RTS/CTS) flow control.
-  Interrupt driven receiver and transmitter (optional).
-  Supports 300 baud to 115,200 baud.
-  Supports the PC/4 and PC/8 DigiBoard.
-  Supports the BB1004, BB1008, and BB2016 BOCA boards.
-  COM1 through COM20 defined.
-  Adjustable receive queues from 8 bytes to 32 KB.
-  Control-BREAK error exit.
-  19 communications error conditions trapped.
-  4 ports can run concurrently (more with multiport boards).
-  Complete modem control & status.
-  Written in assembly language for small size & high speed.

Several example programs (source code) are provided along  with
the small  model  library  and  makefiles  for  each  of  the
supported compilers.  The example programs are:

(1)  MINIMAL  is the absolutely minimal terminal emulator program.
It is hard coded to use COM1 at 9600.

(2)  SIMPLE  is an extremely  simple  terminal  emulator  program.
Start it by supplying a port number and a baud rate,

     SIMPLE 1 9600

(3)  DOOR  is  very similiar to SIMPLE, but it "takes over" a port
in that the UART  is  not  reset,  and  all  parameters  including
the baud rate are acquired unchanged.

(4)   LOGIN is a variation on SIMPLE. It dials up the MarshallSoft
BBS and logs on as GUEST.

The shareware distribution does not include the source code to the
library, but all example code is included.

For more information, refer to the Personal Communications Library
Users  Manual  (PCL4P.USR)  and  Personal  Communications  Library
Reference Manual (PCL4P.REF), which are part of PCL4P41.ZIP.

A C version of the library (PCL4C) is also available.


                 *** Registration ***


The shareware version of PCL4P.LIB  is  provided  so  that  you
may personally  determine the usefulness of the product for
yourself. If you can  use  the  Personal  Communications  Library
for  Turbo  or Borland  Pascal,  please register your use with
us. Send $75 plus $5 S&H ($10 outside of North America) to:

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

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


We accept VISA, MasterCard, and American  Express  (account
number, expiration  date, exact name on your card, and complete
card billing address required), checks in US dollars drawn on a
US bank, purchase orders (POs) from recognized US schools and
companies listed in  Dun &  Bradstreet,  and  COD  (street
address and phone number required) within the USA (plus a $4.50
COD charge).  Print the file  PCL4P.INV if an invoice is needed.

You can also order PCL4P from The Public Software Library (PSL)
with your  MC, Visa, AmEx, or Discover card by calling
800-242-4PSL (from overseas: 713-524-6394) or by FAX at
713-524-6398 or  by  CompuServe at  [71355,470].   THESE  NUMBERS
ARE FOR ORDERING ONLY. The product number for PCL4P is 10909.

If you wish to update from an older version of PCL4P, send $20
plus $5  S&H  ($10  outside  of  North America).  Updates must be
ordered directly from MarshallSoft Computing.

  The registered package includes:

  -  Assembler source code for the library.
  -  Printed Users Manual.
  -  Printed Reference Manual.
  -  One year technical support.

PCL4P.ASM is the source code for the library.  The  source  code
is copyrighted  by  MarshallSoft  Computing, Inc. The user is
granted a license to use the PCL4P object code in his  own
application  only.  PCL4P.ASM  is  not  shareware  and  may not
be sold or given away to anyone.

The registered user will receive the latest version  of  PCL4P
by return  mail.  A 3.5" diskette is provided unless a 5.25"
diskette is requested.