KERMIT C-64, v1.5
    
                  Robert W. Detenbeck, University of Vermont.

        KERMIT is a protocol for transferring files between different
   computers.  This KERMIT program was written in the FORTH language, for
   a Commodore C64 computer with a Commodore 1541 disk drive (device 8)
   and a Commodore 1600 modem on the RS-232 port (device 2).  Other
   drives and modems may work if they use the same device numbers.  The
   program itself uses about 30K; disk buffers for "save" and "help"
   commands extend downward from $9FFF; and there are scratch string
   areas in $CB00-$CFFF.  This program has been tested only under limited
   conditions.  It has been run at 300 baud, but the nature of the
   interrupt-driven RS-232 interface suggests that 1200 or even 2400 baud
   should work without loss of data, though perhaps not at the efficiency
   of a machine-language program.  Multiple-file transfers with wild-card
   construction cause some problems in the transfer of filenames from
   Kermit-20.
    
        The "help" files, named scr96, scr97 and scr98, give details of
   this program's special characteristics.  Several special features were
   required by the C64's use of Commodore's own form of ASCII code, and
   its lack of certain ASCII capabilities.  ASCII backslash prints as a
   vertical bar, chr$(221), but is transmitted by the "pound" key; the
   tab and formfeed characters are stored in C64 files as chr$(220) and
   chr$(219).
    
        The KERMIT "connect" command converts the C64 into a simple
   terminal, in which the C64 "delete" button transmits the ASCII code
   127, "DEL".  If the host mainframe requires a backspace, ASCII code 8,
   the F5 key should be used.  The terminal program contained herein
   responds correctly to a backspace character received from the modem. 
    
        You have received a "turnkey" copy of the FORTH program, in which
   the source screens and programming system are inaccessible.  This copy
   may be recopied and distributed without restriction.  In fact, the
   "new" command of this KERMIT facilitates such copying.  If you want a
   copy of the original FORTH screens, with a printing program to device
   4, you may obtain one by sending a blank disk in a stamped,
   self-addressed mailer to the author, Robert W. Detenbeck, Department
   of Physics, University of Vermont, Burlington, VT 05405.  They were
   written to be used with version A of C64-FORTH, sold by Performance
   Micro Products, 770 Dedham Street-S2, Canton, MA 02021.  Slight
   modifications would be required to use the screens with the newer
   version B, a pure FORTH-79 standard.  Because the screens of C64-FORTH
   are 25 x 40, extensive retyping would be necessary to format them for
   readability on a standard 16 x 64 FORTH screen.
    
        Information about KERMIT can be obtained from the following
   sources:
   Frank da Cruz and Bill Catchings, "Kermit: A File-Transfer Protocol
   for Universities"
   BYTE, vol. 9, no. 6, June 1984, p. 255 (Part 1)
   BYTE, vol. 9, no. 7, July 1984, p. 143 (Part 2)
   KERMIT USERS GUIDE, 4th ed., available for $5.00 from KERMIT
   Distribution, Columbia University Center for Computing Activities, 7th
   Floor, Watson Laboratory, 612 West 115th Street, New York, N.Y. 10025.
   For those near the University of Vermont, the USERS GUIDE can be
   purchased from the Academic Computing Center in the Cook Building.