Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!uakari.primate.wisc.edu!ginosko!usc!apple!rutgers!cmcl2!rna!dan
From: dan@rna.UUCP (Dan Ts'o)
Newsgroups: comp.binaries.ibm.pc.d
Subject: Re: Problems getting files from Simtel20
Message-ID: <821@rna.UUCP>
Date: 22 Oct 89 19:38:40 GMT
References: <389@cs.columbia.edu>
Reply-To: dan@rna.UUCP (The Dan of all vices)
Distribution: usa
Organization: Rockefeller University Neurobiology
Lines: 61

In article <389@cs.columbia.edu> benderly@cs.columbia.edu (Dan Benderly) writes:
>I am having problems getting files from the SIMTEL archives.  I am on a 
>Unix machine (SunOS, I beleive).  After connecting to SIMTEL, I enter
>"type tenex", and begin to transfer the files I want.  When, however, I down-
>load them to my PC & try to un-arc them, it tells me that every file fails
>the CRC check, and all I get is garbage.

	The type tenex should be enough, although maybe image mode is necessary
as well. A while ago I transferred a bunch of files using image mode, but
forgetting tenex mode. Rather than re-transferring the files, I wrote a little
program to fix the tenex files. I posted the program TENEX to
comp.binaries.ibm.pc about 1.5 years ago, but would be happy to send it to
anyone wanting it. Here is the short description:

-----
	I had just spent a few hours uploading MSDOS stuff from SIMTEL20.
Back on my PC, I realized that while I had remembered to transfer everything
in binary mode (in FTP), that I had neglected to account for (is it called ?)
TENEX mode (since SIMTEL20 is a 36-bit machine). I decided it would be faster
to write a C program to convert the 36-bit data into good ol' 8-bit bytes,
than re-upload every. So here is the program. I used MSC 5.0. If anyone needs
a binary copy for MSDOS, I'll mail them one. I hope this wheel hasn't been
reinvented too many times...

					Cheers,
					Dan Ts'o
					tso@rockefeller.edu
					dan@rna.rockefeller.edu
					...cmcl2!rna!dan
					212-570-7671
					Dept Neurbiology
					The Rockefeller University
					1230 York Ave.
					NY, NY  10021
/*
 * TENEX convert - convert tenex 36-bit files into standard 8-bit
 *	byte stream by discarding every 9th nibble (hopefully its zero).
 *	Also convert TENEX 7-bit ASCII to standard 8-bit byte ASCII by
 *	discarding every 36th bit.
 *
 *	Written by Daniel Ts'o, dan@rna.rockefeller.edu, 9/7/88
 *
 *	Usage: tenex [-[t|b]] [-[v|q]] [files...]
 *
 *	-t	Convert 5x7bit ASCII (35+1bit packing) into 8-bit byte stream
 *	-b	Convert 4*8bit binary (32+4bit packing) into 8-bit byte stream
 *			(Default is -b)
 *	-i	Ignore nonzero bits (print warning but don't abort conversion)
 *	-v	Print progress on stderr
 *	-q	Quietly delete nonzero bits
 *
 *	If file arguments are given, they are converted "in place", using
 *		temporary file "tenex.tmp".
 *	If file arguments are missing, convert stdin to stdout (filter mode).
 *
 *	Compile with MSC 5.0 on MSDOS:
 *
 *		cl tenex.c \lib\setargv.obj /link /NOE
 *
 *	to permit wildcard expansion.
 */