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- Newsgroups: comp.unix.questions
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!caen!umeecs!nova!ellis
- From: ellis@nova.gmi.edu (Stew Ellis)
- Subject: Re: Zmodem installation problem
- Message-ID: <ellis.715099732@nova>
- Sender: news@zip.eecs.umich.edu (Mr. News)
- Organization: GMI Engineering&Management Institute, Flint, MI
- References: <1992Aug13.124108.22845@eng.ufl.edu> <1992Aug13.183019.4034@fripp.ri.cadre.com> <1992Aug13.223617.26441@eng.ufl.edu>
- Date: Sat, 29 Aug 1992 14:48:52 GMT
- Lines: 69
-
- zzang@whale.stat.ufl.edu (Zhuo Zang) writes:
-
- >Hello,
- >Thanks for the responses !
-
- >In article <1992Aug13.183019.4034@fripp.ri.cadre.com> jh@cadre.com writes:
- >>In article 22845@eng.ufl.edu, zzang@whale.stat.ufl.edu (Zhuo Zang) writes:
- >>>Hello,
- >>>I try to install the Zmodem on the DECstation
- >>>with Ultrix 4.2 .
- >>>After I compiled all the programs, rz ,sz ,....
- >>>I ran the programs. And it doesn't work.
- >>>The problem seems that the Zmodem didn't
- >>>direct the data flow to the serial port
- >>>correct, I need to set the tty somehow,
- >>>but I don't know how.
- >>
- >>You may be confused about how ZModem works. It actually sends its output
- >>to stdout (on UNIX). For example, when I dial into my UNIX box, I'll
-
- >I really don't have any idea how those modems work.
- >I thought the Kermit , Xmodem , Ymodem and Zmodem all worked
- >the same way. They would send the data flow to the serial port
- >at one end the comm line, and receive the data at the serial
- >port at the other end.
-
- >>type sz <filename> to initiate the download to my machine at home. My
- >>comm program then actually understands that a Zmodem transfer has started,
- >>and begins receiving automatically, although if yours doesn't, it can
- >>certainly be started manually.
- >> I'm not exazctly sure what you mean by "direct the data flow to the serial
- >>port," though. If you gave a little more detail as to how you're doing things,
- >>we might be of a little more help.
- >>
-
- >I use the Procomm2.4.2, which doesn't have the Zmodem. But it does
- >have the Kermit, Xmodem and Ymodem. and I use the Xmodem and Ymodem
- >when I connect to the BBS. on Unix I am using Kermit now,
- >but it is slow. The Zmodem package says it also supports
- >the Ymodem and Xmodem. So I use sz <file> on Unix to start
- >downloading, and use the Ymodem in ProComm to receive <file>.
- >According to the Zmodem manual, the Zmodem will auto down shift
- >to Ymodem, if it finds the other end doesn't support the Zmodem.
- >However, nothing is transmitted in this way.
-
- >Since all the data flow should be transmitted thru the serial port
- >when we use the modem to connect to the Unix, I doubt that
- >the Zmodem had sent the data to somewhere else, not the serial port.
-
- >>---
- >>Joe Hartley | jh@cadre.com - Whenever you find that you are on the
-
-
- >zhuo
-
- If you are trying to use sz on the UNIX host to send to X or Ymodem in
- procomm on your PC, I believe the author of zmodem (Chuck Forsberg) says
- that the procomm ymodem is misimplemented.
-
- Whoever installed sz on your unix machine should have linked it to sx and sy
- to support downloading with the X and Y modem protocols respectively. If
- they did not, then you can create links for them in your own binary
- directory.
-
- --
- -- ___________________
- R.Stewart(Stew) Ellis, Assoc.Prof., (Off)313-762-9765 / _____ ______
- Humanities & Social Science, GMI Eng.& Mgmt. Inst. / / / / / /
- Flint, MI 48504 ellis@nova.gmi.edu /________/ / / / /
-