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--- systems:3rd_edition [2023/05/23 08:52] – add version changes segaloco
+++ systems:3rd_edition [2023/05/23 10:01] – segaloco
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 **Documentation: ** [[http://www.tuhs.org/Archive/PDP-11/Distributions/research/Dennis_v3/v3man.tar.gz|3rd Edition man pages]]
-The Third Edition of Unix was the last version with a kernel still written in assembly code, but is the first version to include pipes. More specifically, the Third Edition kernel targets the PDP-11/45 hardware including making use of protection and extended arithmetic features. For much of 1973, the existing Third Edition was maintained and improved, while the kernel was rewritten in C to become the Fourth Edition of Unix.
+The Third Edition of Unix was the last version with a kernel still written in assembly code, but is the first version to include pipes. More specifically, the Third Edition kernel targets the PDP-11/45 hardware including making use of protection and extended arithmetic features. For much of 1973, the existing Third Edition was maintained and improved, while the kernel was rewritten in C to become the [[systems:4th_edition|Fourth Edition]] of Unix.
-For the Third Edition of Unix we only have part of the C compiler, and the manual pages. Dennis Ritchie [[http://cm.bell-labs.com/cm/cs/who/dmr/primevalC.html|describes]] this version of the C compiler as follows:
+For the Third Edition of Unix we only have part of the C compiler, and the manual pages. [[people:dennis_ritchie|Dennis Ritchie]] [[http://cm.bell-labs.com/cm/cs/who/dmr/primevalC.html|describes]] this version of the C compiler as follows:
 "prestruct-c" is a copy of the compiler just before I started changing it to use structures itself. ... [It] implements structures in a way that begins to approach their current meaning. Their declaration syntax seems to use () instead of {}, but . and -> for specifying members of a structure itself and members of a pointed-to structure are both there.
-The files currently listed as Second Edition under cmd and lib in the UNIX tree, [[https://www.tuhs.org/cgi-bin/utree.pl?file=V2|V2 Sources]], may represent code closer in character to the Third Edition, given the lack of Extended Arithmetic Element usage.
+The files currently listed as [[systems:2nd_edition|Second Edition]] under cmd and lib in the UNIX tree, [[https://www.tuhs.org/cgi-bin/utree.pl?file=V2|V2 Sources]], may represent code closer in character to the Third Edition, given the lack of Extended Arithmetic Element usage.
 Changes include:
@@ Line 30: / Line 30: @@
   * An earlier find(I) tool, distinct from the modern one, is removed
   * A manual is produced for the assembler, allowing removal of expository detail in as(I) page
+  * The linker no longer references B or Explor files, presumably dropping support and related libraries
   * The desk calculator dc(I) gains many features
   * The first nroff(I) page on the public record appears
@@ Line 52: / Line 53: @@
   * Adds 20boot, chk, clri, kill, ps, swtmp
   * Owners are no longer listed in the manual pages
+The following papers are carried over in SEE ALSO sections from the Second Edition in the manual:
+  * The UNIX Time-sharing System - D.M. Ritchie, K. Thompson
+  * Users' Reference to B - K. Thompson
+  * C Reference Manual - D.M. Ritchie
+  * M6 Manual - A.D. Hall
+The following papers are introduced in SEE ALSO sections:
+  * UNIX Assembler Manual - D.M. Ritchie
+  * A Manual for the TMG Compiler-writing Language - M.D. McIlroy
+  * NROFF User's Manual - J.F. Ossanna
+  * YACC Manual - S.C. Johnson
+  * LR Parsing - A.V. Aho, S.C. Johnson
+  * "AT&T Writeup on DDS" - Author unknown, referenced in ddsput(III)
+  * "HIS Documentation" - Author unknown, referenced in gerts(III)
 For more information about Third Edition Unix, see [[http://cm.bell-labs.com/cm/cs/who/dmr/hist.html|The Evolution of the Unix Time-sharing System]] by Dennis Ritchie.