nanog mailing list archives

Re: Packet Loss


From: Marshall Eubanks <tme () 21rst-century com>
Date: Fri, 15 Dec 2000 11:20:44 -0500


Valdis.Kletnieks () vt edu wrote:

On Fri, 15 Dec 2000 09:24:04 CST, "John R. Grant" said:
<cringe>
that would be 9600 bit per inch GCR format 9-track tape, don't you think?
</cringe>

At least in the IBM world, the options for 7-track were 200/556/800 bpi
with even or odd parity, and mode=normal/data converter/translator. For
9-track the options are 800 NRZI, 1600 PE, and 6250 GCR.

I still have 21 9-track tapes in my office that I need to do something with,
as our last system with 3420-style round tapes is being decomissioned in
the next few months.
--
                                Valdis Kletnieks
                                Operating Systems Analyst
                                Virginia Tech

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   Part 1.2Type: application/pgp-signature


-- 
Hello;

   Real Men use punched paper tape to store programs and load the boot
block, after toggling
its binary location on the system console register :) The Gods Who Walk
Among Us program in machine 
code by toggling it in at the console. 

(I still have some punched paper tape somewhere. I remember feeling
impressed when I graduated to
punched cards. They didn't tend to crack if you had a string of all bits
set to one.)

On the other hand, I did tens of thousands of lines of code on IBM
punched cards and I never
once recall a bug caused by a chad, hanging or otherwise.

                                   Regards
                                   Marshall Eubanks

   Multicast Technologies, Inc.
   10301 Democracy Lane, Suite 201
   Fairfax, Virginia 22030
   Phone : 703-293-9624          Fax     : 703-293-9609     
   e-mail : tme () on-the-i com     http://www.on-the-i.com



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