Ymodem

1 definition found

From The Free On-line Dictionary of Computing (27 SEP 03) [foldoc]:

  YMODEM
       
          A file transfer {protocol} used between {modem}s.  YMODEM was
          developed by Chuck Forsberg as the successor to {XMODEM} and
          was itself succeeded by {ZMODEM}.  XMODEM used 128-byte
          {packet}s, YMODEM can also use 1 kilobyte packets.  Whereas


          YMODEM is a batch protocol, {YMODEM-G} is a non-stop version.
       
          File sizes are included in the YMODEM header when sending both
          binary and text files.  Thus files transferred via YMODEM
          should preserve their exact length.  File modification times
          may also be present in the YMODEM header.
       
          YModem can {fall back} to smaller packets when necessary but
          there is no backward compatibility with XModem's error
          detection.
       
          [Chuck Forsberg, "XMODEM/YMODEM Protocol Reference"].
       
          (1995-02-02)