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Article #535

Xmodem 3.9 - Is it broke?

#535
From: Carl W. Bergerson
Date: Thu, 13 Dec 1990 17:50
72 lines
2827 bytes
Last week Xmodem 3.9 by Steve Grandi was posted to comp.sources.unix.

I compiled this version, without warnings or errors, under
RISC/os 4.51 using the bsd 4.3 compiler. I started testing it using
Procomm Plus 1.2 on a '386 clone under MSDOS 3.3.

I cannot get this program to function properly. Can anyone Help?

Details -

When doing a xmodem send text (xmodem -st <file>), xmodem appends
an arbitrary number of control Zs to the end of the file. See the
output of wc below for three files before and after downloading.

RISC/os Before download

   21     151     870
  297    1196    8438
  102     586    3839


MSDOS  After download

   21     151     870        0
  297    1197    8535       56
  102     587    3866       26

The fourth column in the MSDOS listing is the number of ^Z at the end of
the file. I also tried a Ymodem download and it added the same number
of ^Z.

When trying to do an xmodem receive (xmodem -rt) Xmodem never
synchronizes with PCPlus. See the xmodem.log sample below.

++++++++  Mon Dec 10 10:44:06 1990
XMODEM Version 3.9 (November 1990)
Command line: xmodem rt
Line speed = 9600 bits per second
Batch Receive Started in text mode
----
XMODEM File Receive Function
CRC mode requested on command line
Header Sector Number Error on Sector 1
Header Sector Number Error on Sector 1
Header Sector Number Error on Sector 1
Header Sector Number Error on Sector 1
Header Sector Number Error on Sector 1
Header Sector Number Error on Sector 1
Header Sector Number Error on Sector 1
Header Sector Number Error on Sector 1
Header Sector Number Error on Sector 1
Header Sector Number Error on Sector 1
Header Sector Number Error on Sector 1
Header Sector Number Error on Sector 1
Header Sector Number Error on Sector 1
Header Sector Number Error on Sector 1
Header Sector Number Error on Sector 1
XMODEM Fatal Error:  Reception Canceled by CAN-CAN



I have also tried uploading with Ymodem and several other variations
and they all have the same problem.


Any help or suggestions would be greatly appreciated.
-- 
Carl Bergerson                                           uunet!p4tustin!carl  
Point 4 Data Corporation                                     carl@point4.com
15442 Del Amo Avenue                                   Voice: (714) 259 0777
Tustin, CA 92680-6445                                    Fax: (714) 259 0921
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From: carl@p4tustin.UUCP (Carl W. Bergerson)
Newsgroups: comp.sources.bugs
Subject: Xmodem 3.9 - Is it broke?
Keywords: Xmodem Ymodem Procomm
Message-ID: <1288@p4tustin.UUCP>
Date: 13 Dec 90 17:50:09 GMT
Organization: POINT 4 Data Corporation, Tustin, CA
Lines: 72