XMODEM4/SRC by Hal N. Fuquay was released to the public
domain on 01/17/85. Downloaded from DELPHI on 10/12/85.
This is the source code to implement 'xmodem' under Trsdos
6.2.n.
 
Mini-documentation by Guy Omer of 8/N/1 #001 at 904/377-1200