Subject: Re: MIT ChaosNet code port to Linux
From: Erik Naggum <>
Date: Fri, 21 Jun 2002 16:58:28 GMT
Newsgroups: comp.lang.lisp
Message-ID: <>

* Barry Margolin
| I don't know much about what DEC did, as much of my PDP-10 experience was
| on ITS, which did not come from DEC.  There was quite a bit of 6-bit in ITS.

  Oh, sorry, I missed the ITS-exclusive context.  I have only worked with
  TOPS-10 and TOPS-20.

| You're right, it's wrong to call it ASCII, it's just a 6-bit character set
| (wasn't BAUDOT also a 6-bit character set)?

  Baudot code was a telegraph alphabet using 5 bits with two shift states,
  allowing 90 different characters.  (Only one shift state was allowed at a
  time, or 60 more characters could easily have been added, as their order
  would also have mattered.)  I believe Baudot was International Telegraph
  Alphabet Number 1, but cannot confirm this now.  It dates back to 1880, and
  was replaced by the start-stop asynchronous International Telegraph Alphabet
  Number 2, about which I find no authoritative information -- my library of
  past editions of the CCITT colored books are not that complete.  (And after
  having tried to explain the relationship between Unicode and ISO 6429 to a
  few people and having been voted down by Google searches because the myths
  outnumber the actual specification, I have once again lost all faith in
  asking the Internet in general for accurate and correct information.)
  Guide to non-spammers: If you want to send me a business proposal, please be
  specific and do not put "business proposal" in the Subject header.  If it is
  urgent, do not use the word "urgent".  If you need an immediate answer, give
  me a reason, do not shout "for your immediate attention".  Thank you.