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From: coburn@clo.enet.dec.com (John T. Coburn)
Newsgroups: comp.sys.amiga
Subject: Re: VMS Y & Z MODEM protocols
Message-ID: <10263@shlump.nac.dec.com>
Date: 13 Apr 90 16:03:00 GMT
Sender: newsdaemon@shlump.nac.dec.com
Organization: DEC - EIS Cleveland, Ohio
Lines: 32


In article <24071@usc.edu>, papa@pollux.usc.edu (Marco Papa) writes...
:In article <41676@iuvax.cs.indiana.edu> sl195091@silver.ucs.indiana.edu (Andy Hartman) writes:
:>Here at IU, we tried to implement Zmodem, but the project was abandoned because
:>of the fact that the VAX (VMS 4.5 or close :-) ) deals in 7 bits while z modem
:>is an 8 bit protocol.  If I am wrong, let me know (no flames!!!!) but I think
:>this is the reason it wouldn't work here.
: 
:You're right: ZMODEM requires an 8-bit data path.
: 
:>Kermit does suck because it transfers at about 100 cps on a 2400b modem!
:>I get 220 with z modem.  
: 
:Kermit might suck, but it is the only way to transfer binaries over 7-bit
:data paths (like VMS and IBM maninframes).
: 

VMS is not limited to 7 bit serial data paths and has never been as far
back as I remember. The X.25 networks and X.29 PADs may be limited but this is
not a restriction imposed by VMS. 

:-- Marco
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