[net.micro] *modem info wanted

DENNETT@SRI-NIC.arpa (Steve Dennett) (05/09/86)

Hello,

Could someone please send me (or let me know where to find) a brief
description of the various versions of the Modem protocol--
Umodem, Xmodem, Modem7, Ymodem, etc.  I'm NOT looking for actual
descriptions of the technical details, just a comparison of the
differences and features, and which of them (if any) are
compatible with any others.  Thanks!

Steve Dennett
dennett@sri-nic.arpa
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W8SDZ@SIMTEL20.arpa (Keith Petersen) (05/13/86)

The following file, available from SIMTEL20, will probably answer your
questions about the various programs that use the Christensen MODEM
file transfer protocol (sometimes erroniously called XMODEM or MODEM7
protocol).

Filename			Type	 Bytes	 CRC

Directory PD:<CPM.MODEM7>
YMODEM.DOC.1			ASCII	 49446  6076H

If you have any more questions, address them to:

Info-Modem7@SIMTEL20.ARPA

which is a mailing list that specializes in MODEM7, MEX, YMODEM,
UMODEM, etc. (administrative requests to Info-Modem7-Request please).

--Keith

peter@baylor.UUCP (Peter da Silva) (05/15/86)

On the other hand, I'm looking for a technical description of XMODEM,
MODEM7 (batch XMODEM), YMODEM, etc... I'm trying to add a batch mode to
my terminal program but have had no luck whatsoever deciphering Tom
Jenning's TELINK document. Apparently he assumes you already know how
to do batch XMODEM.
-- 
-- Peter da Silva
-- UUCP: ...!shell!{baylor,graffiti}!peter; MCI: PDASILVA; CIS: 70216,1076