[net.micro.cpm] xmodem BATCH protocols; any documentation?

grandi@noao.UUCP (Steve Grandi) (04/15/85)

I have recently seen an addendum by John Byrns to Ward Christensen's 1982 
MODEM protocol document that discusses the CRC option (both were recently
posted to net.sources).  Has anyone written down "official" protocols
for the batch file transfer mode of MODEM??  Comparing several
different programs, I find that they differ in whether or not the
file-name checksum is to be ACKed or not.  I think these two cases are
mutually exclusive!  Thus, I would like to know the "official" way of
doing things.
-- 
Steve Grandi, National Optical Astronomy Observatories, Tucson, AZ, 602-325-9228
{arizona,decvax,hao,ihnp4,seismo}!noao!grandi  noao!grandi@lbl-csam.ARPA

caf@omen.UUCP (Chuck Forsberg WA7KGX) (04/19/85)

The MODEM7 "batch protocol" was never widely accepted because it is so
very specific to CP/M.

My understanding is that Ward is writing an article for Byte which describes
the "YMODEM" protocol extensions as used by the YAM series of programs.

A file describing the extensions is available on Telegodzilla (503-621-3746)
as YAMPROT.DQC.
-- 
Chuck Forsberg WA7KGX	..!tektronix!reed!omen!caf
Omen Technology Inc 17505-V NW Sauvie IS RD Portland OR 97231
Voice: 503-621-3406	Modem: 503-621-3746