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From: GTHEALL@PENNDRLS.UPENN.EDU (George A. Theall)
Newsgroups: comp.sys.dec.micro
Subject: Rainbow EchoMail Digest
Message-ID: <9009271234.AA27535@remote.dccs.upenn.edu>
Date: 27 Sep 90 13:34:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
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Lines: 76

Rainbow EchoMail Digest                         Sep 27, 1990

In this issue:
  RE: ZMODEM ON RAINBOW          (2 messages)


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------------------------------------------------------------------------
Date:     09-25-90 (14:32)
To:       CARL NEIBURGER
Subject:  RE: ZMODEM ON RAINBOW
From:     CHRIS RYAN

I wish to respond to a statement you made in your article in the recent
issue of "Silicon Valley RAINBOW" newsletter.
   "...YModem and ZModem are about equally fast, though I know of no
software for the DEC Rainbow that includes ZModem."

  Well, in the STRICTEST sense, this may be true. BUT, when conbined
with a fossil, BINKLEY runs just fine on the Rainbow,... AND it does
have ZModem included in it.  That is the main reason that I took
up with Binkley in the first place: zmodem, & batch downloads
(with wildcard file specifiers) with something other than Kermit.
  What is true, however, is that there is no DSZ/Omen/Chuck Forsberg
implementation of ZModem available on the Rainbow.  Binkley uses
Zed-Zap, which is a variant of the basic ZModem protocol.  To
quote Joe Jared, a local sysop:
  "It's a variant of zmodem used by Binkley, Front Door, and other
front end mailing systems..  For 9600 baud connections, it sends 8192
byte blocks as opposed to 1024 byte blocks." (originally posted
in zmodem echo 7/24/90).

   Some months ago I had some troubles with Zmodem transfers on my
Rainbow (using Binkley) & a clone (using DSZ). A question to Chuck
Forsberg got the following response:
    ".....I also don't have access to a Rainbow computer,....A unique
situation such as yours requires some serious consulting services."
   Have you contacted him about a modification to his DSZ implementation
to take advantage of the NEC uart the Rainbow uses (instead of the 8250
family of uarts in IBM-clones)?
   If I can be of help, give a holler.

Later.
Chris Ryan

(SYSOP INTERRUPTUS of Santa Monica Sweet Dreams - we're off-line for
now.)

 * Origin: Long_Island RB (Opus 1:102/138)
------------------------------
Date:     09-27-90 (07:56)
To:       CHRIS RYAN
Subject:  RE: ZMODEM ON RAINBOW
From:     GEORGE THEALL

CR>   Some months ago I had some troubles with Zmodem transfers on my
CR>Rainbow (using Binkley) & a clone (using DSZ). A question to Chuck
CR>Forsberg got the following response:
CR>    ".....I also don't have access to a Rainbow computer,....A unique
CR>situation such as yours requires some serious consulting services."

   C source for X/Y/Zmodem is available publically. Although written
for unix and VMS, you might be able to port it to the Rainbow. You
might find an older version on a local board; you definitely get it
when you register DSZ. On one hand, I'd bet Chuck would be more
amenable to questions such as yours from a registered user. On the
other, there's little reason for someone to register DSZ for use on a
Rainbow with only the hope that Chuck will get it working there.

George
------------------------------