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<DIV><FONT face=Arial size=2>I didn't know that B had been around so much. I
then was /not/ designed for working with UNIX specifically?</FONT></DIV>
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style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=clemc@ccc.com href="mailto:clemc@ccc.com">Clem Cole</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=esmithmail@gmail.com
href="mailto:esmithmail@gmail.com">Eric Smith</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Cc:</B> <A title=simh@trailing-edge.com
href="mailto:simh@trailing-edge.com">simh@trailing-edge.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, February 26, 2016 7:24
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Simh] pdp11 and unix</DIV>
<DIV><BR></DIV>
<DIV dir=ltr>
<DIV class=gmail_extra><BR>
<DIV class=gmail_quote>On Fri, Feb 26, 2016 at 6:43 PM, Eric Smith <SPAN
dir=ltr><<A href="mailto:esmithmail@gmail.com"
target=_blank>esmithmail@gmail.com</A>></SPAN> wrote:<BR>
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style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<DIV class=a3s id=:1hk style="OVERFLOW: hidden">It would be interesting to
know how they went from B to C .. but once<BR>they had a higher level
language (C .. well, higher level compared to<BR>the assembler), things
would become much easier.</DIV></BLOCKQUOTE></DIV><BR>
<DIV class=gmail_default
style="FONT-FAMILY: arial,helvetica,sans-serif">Dennis described it all in
one of his papers. NB was written in B. C morphed into being so
as he said, there was never really a "C" compiler from scratch. At one
point, they realized the language had diverged enough to call it something
else.</DIV>
<DIV class=gmail_default
style="FONT-FAMILY: arial,helvetica,sans-serif"><BR></DIV>
<DIV class=gmail_default style="FONT-FAMILY: arial,helvetica,sans-serif">Also,
as Doug has pointed out either here or on the TUHS list, there was an early
parser in TMG - which I believe spit out B at that point. Yacc and Lex
do not appear until later in the cycle. </DIV>
<DIV class=gmail_default
style="FONT-FAMILY: arial,helvetica,sans-serif"><BR></DIV>
<DIV class=gmail_default style="FONT-FAMILY: arial,helvetica,sans-serif">The
point is that the kernel and the tools "matured" as time went on. At
some point Dennis would collect up tools that people had and pick up the
current state of the kernel and "release" was come out. So it was a ephemeral
thing, not a big formal process we think of today with release candidates et
al. The bad news for us trying to pick through the history, is
that it means in some cases we really do not have an established date of
references point. Warren has done yeoman's work to try to help
establish such a timeline and probably has the most definitive track of what
was what - but in some cases it was hazy and frankly the intermediate codes
have been lost.</DIV>
<DIV class=gmail_default
style="FONT-FAMILY: arial,helvetica,sans-serif"><BR></DIV>
<DIV class=gmail_default
style="FONT-FAMILY: arial,helvetica,sans-serif">Clem</DIV><BR></DIV></DIV>
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<HR>
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