YMODEM

File Format
Name	YMODEM
Ontology	Electronic File Formats File transfer YMODEM
Released	~1985

YMODEM is a file transfer protocol. It belongs to a category of protocols that work on top of an already-established connection, typically a modem connection to a BBS.

As far as we can tell, YMODEM was not particularly popular. This may have been because there were several incompatible variants of it, and/or because of the small window of time between it and the introduction of ZMODEM.

See also

• XMODEM (predecessor)
• ZMODEM

Links

• Wikipedia: YMODEM
• XMODEM/YMODEM Protocol Reference, Edited by Chuck Forsberg
  • 1988-06-18
  • 1987-10-27
  • 1985-10-10