[comp.sys.ibm.pc] How unARC from SIMTEL20?

cameron@symcom.math.uiuc.EDU (11/14/88)

What un-ARC-er should I use on files from SIMTEL20? And where
should I get it from?

Apologies in advance if there is some standard place to go for
this information.  I did look through the titles of all 302
notes my site currently has in this notesfile before asking.

Details:
I have seen frequent remarks of the form "such-and-such is
available for anonymous ftp from SIMTEL20".  Today, for the
first time, with the help of a friend, I found out how to
get to SIMTEL20 and bring back files.  I fetched two, both
with names of the form <descriptive_word>.arc.<digit>,
and I downloaded them by a hitherto-always-reliable method
from my networked machine to an IBM PC.  The transfer program
swears that the transmission went OK, and the byte count is
the same on the PC as on the machine I did the ftp with, but
I cannot de-archive the files.  Both SEA's ARC (version 5.2,
I think) and PKARC version 3.5 are unable to read the files,
and deny that they are in archive format.

Any help most gratefully appreciated.
Thanks profusely.

--Cameron Smith
  cameron@symcom.math.uiuc.edu

usenet@cps3xx.UUCP (Usenet file owner) (11/15/88)

in article <32900001@symcom>, cameron@symcom.math.uiuc.EDU says:
> What un-ARC-er should I use on files from SIMTEL20? And where
> should I get it from?
> 
> Apologies in advance if there is some standard place to go for
> this information.

simtel20 does have a file of the name ARCHIVE-INFO or near that that
explains all the procedures for stuff. 

1) during your ftp transfer did you do a:
type tenex              or:
quote "type l 8"

simtel20 is a 36bit machine. If you did a straight binary tranfer to 
a standard UNIX 32bit machine, you got trash.

2) The way I usually do it is get the stuff to a BSD UNIX machine and 
use the BSD ARC program I got from simtel20 to unpack it. I then 
repack it using my favorite method and tranfer it to my PC./


John H. Lawitzke      UUCP: ...rutgers!mailrus!frith!fciiho!jhl
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"What?!? Real computing at an insurance company?!? AND in Michigan!?!"

cameron@symcom.math.uiuc.EDU (11/16/88)

Profuse thanks to the dozen or so people who responded via
email to my question about how to get files from SIMTEL20!
A summary of the information follows.

1. SIMTEL20 is a DEC-20, which is a 36-bit word machine.
   It packs 4 bytes per word, with 4 bits of zero fill.
   So ftp's from such a machine to a byte-oriented machine
   (like my Sun 3/50) must be done in 'tenex', not 'binary'
   mode.  (This was my mistake -- thanks all!)

2. If Kermit is used to move files from the networked machine
   over a modem to a PC, then it must be in "binary" and not
   "text" mode.  (I have run afoul of this before, though not
   this time.)

3. The directory PD1:<MSDOS.STARTER> has (among other things)
   all the encoders/decoders one might need to extract the
   files on SIMTEL20 from whatever formats they're in.
   The extensions mean what they usually do:

       .ZOO  means it was compressed with Rahul Dhesi's ZOO.EXE
       .ARC  archived with PKPAK.EXE, unarchive with PKUNPAK.EXE
       .LBR  concatenated with LU.EXE, break up with LUE220.COM
       .?Q?  squeezed with SQPC.COM, unsqueezed with NUSQ.COM

4. More details are in the file SIMTEL-ARCHIVES.INFO from the
   default anonymous ftp directory.

Thanks again to all who took the time to respond.  Depending on
how long this note is kept before expiration, you shouldn't have
to answer the same questions again for a while! :-)

--Cameron Smith
  cameron@symcom.math.uiuc.edu

TUCFVS@TUCCVM.BITNET (Frank V. Schubert) (11/17/88)

The reason is that you probably did not set the transfer mode to TENEX.  I
suspect you set it to BINARY.  SIMTEL20 runs a TOPS-20 system and it is a
36 bit machine.  Issue TENEX prior to getting the files and they should be
in a format suitable for PKARC or SEA ARC programs.  I had the same problem
until I spotted a note about this.   Good luck

Bitnet: TUCFVS@TUCC  Address: Frank V. Schubert
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