MODEM9 - A Communications Program For CP/M-86
         Running On An IBM-Compatible Computer.


Originally written as MODEM7 for CP/M-80 by: Irvin M. Hoff.

                   Translated to CP/M-86 by: Michael J. Mellinger
                                             Data Research Associates, Inc.
                                             9270 Olive Boulevard
                                             St. Louis, MO 63132
                                             U.S.A.

   Many fixes and additional translation by: Bill Bolton
                                             Software Tools RCPM
                                             P.O. Box 80
                                             Newport Beach, NSW 2106
                                             Australia

      Converted for use on the IBM PC-XT by: Dick Hill
                                             (AMS) Advanced Micro Systems
                                             2304 McCord Road
                                             Valparaiso, IN 46383
                                             U.S.A.

MODEM9.CMD is a pre-compiled CP/M-86 communications program, for use on an
IBM-compatible turbo XT-class computer.  Its parameters are set up as follows:

   COM2, 2400 baud, 8 bits, no parity, 1 stop bit.

If you're running an XT in turbo mode (8, 10 or 12 MHz.) with your 2400
baud modem on COM2, you may use this program just as it is.  If you need
to change any of the parameters indicated above, make the necessary changes
to the included MODEM9.A86 source code, and re-compile...using the instruc-
tions outlined within the file.

MODEM9, being as old as it is, and having been "ported" from CP/M-80, is
awkward, cumbersome, non-initutive and extremely limited.  However, it DOES
function.  XMODEM-CRC uploads/downloads are supported.  High-ASCII characters,
ANSI sequences, etc., are not supported.

To alter the information contained in the Library of Phone Numbers (which
may be displayed from within MODEM9), use the accompanying utility CHGNUM.CMD.

Have fun, and good luck!


==============================> MODEM9 COMMANDS <==============================

Single Letter Commands
~~~~~~~~~~~~~~~~~~~~~~
H  - Display "help" information
?  - Display current settings

T  - Terminal mode
E  - Terminal mode with echo
L  - Terminal mode with local echo
(For capturing text, use T (or E or L) FILENAME.TYP)

R  - Receive CP/M file using Christensen (Xmodem-CRC) Protocol
S  - Send CP/M file using Christensen (Xmodem-CRC) Protocol
     Command is: R(or S) FILENAME.TYP
     R and S can use the following subcommands:
          B  - Bulk transfer using wildcards (e.g. *.*)
          Q  - Quiet mode (no messages to console)
          T  - Return to terminal mode after transfer
          V  - View bytes transferred on console

The single letter commands may also be used on the
command line when the program is initially executed.



Three Letter Commands
~~~~~~~~~~~~~~~~~~~~~
CPM - Exit from this program to CP/M
DIR - List directory and space free (may specify drive)
ERA - Erase file (may specify drive)
LOG - Change default drive/user (specify drive/user) and reset disks.
        e.g., LOG A0, LOG B (user unchanged)
FOP - Display commands for setting terminal mode file output parameters
DSC - Disconnect the modem from the telephone line
TCC - Toggle Checksum/CRC mode on receive
TBR - Toggle backspace to rub conversion
TLC - Toggle  1) local command immediate
              2) local command after CTRL-^
TLF - Toggle send linefeed after carriage return
NUM - List phone directory
SET - Set communication ports



The following are terminal text buffer commands:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
DEL - Delete memory buffer and file
NOL - Return to terminal mode - no loss of data in buffer
WRT - Write memory buffer to disk file



Local Commands while in Terminal Mode
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CTRL-B  - Change baud rate from terminal mode
CTRL-E  - Exit to command mode
CTRL-P  - Toggle printer
CTRL-Y  - Start copy into buffer
CTRL-R  - Stop copy into buffer
            Start & Stop may be toggled as often as desired.
            A ":" at start of line indicates buffer is open.
            XOFF automatically used to stop input when writing
            full buffer to disk, XON sent to resume.
CTRL-T  - Transfer ASCII file to remote
CTRL-^  - Send local control character to remote