Differences

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--- start [2021-08-20 13:35] – [3. Who now uses Chaosnet?] victor
+++ start [2024-11-18 11:05] (current) – [2. Who used Chaosnet?] victor
@@ Line 1: / Line 1: @@
 ====== Chaosnet ======
+{{ Chaos transceiver cropped small.png?180|Chaosnet transceiver}}
-This site is about the communication protocol Chaosnet. This page gives some **background information**.
+This site is about the computer communications protocol Chaosnet. This page gives some **background information**.
 See also other pages for
@@ Line 7: / Line 7: @@
   * some notes about [[chaos-dns|Chaosnet DNS]],
   * info about the [[global|Global Chaosnet]],
+  * how to set up a [[local|local Chaosnet]],
   * [[protocol|Chaosnet protocol details]], and
   * more [[resources|Chaosnet resources]].
@@ Line 20: / Line 21: @@
 ===== - Who used Chaosnet? =====
-Chaosnet was developed at MIT, where it was initially implemented for [[wp>Lisp machine|LISP machines]] and [[wp>Incompatible Timesharing System|ITS]], then also for [[wp>TOPS-20]], VMS, Unix, and MINITS. At MIT, there were approximately 447 computers and 17 subnets in use in 1989 (according to ''SYSHST;HSTMIT 1115'').
+Chaosnet was developed at MIT, where it was initially implemented for [[wp>Lisp machine|LISP machines]] and [[wp>Incompatible Timesharing System|ITS]], then also for [[wp>TOPS-20]], VMS, Unix, MINITS, and Multics. At MIT, there were approximately 447 computers and 17 subnets in use in 1989 (according to ''SYSHST;HSTMIT 1115'').
 The main spread in the rest of the world was through LISP machines: the original MIT machines, the [[wp>Lisp Machines|LMI]] and [[wp>Symbolics]] machines, and the [[wp>TI Explorer|Texas Instruments]] machines. Only a few other types of computers ran Chaosnet, but it was apparently popular enough that [[https://docstore.mik.ua/univercd/cc/td/doc/product/software/ssr83/rpc_r/48381.htm|Cisco implemented it in their routers]].
@@ Line 28: / Line 29: @@
 Very few of the machines that originally supported Chaosnet have survived to this day, but some remain; also the  [[wp>Genera (operating system)|Symbolics Open Genera]] (a port of the Symbolics LISP machine system to modern hardware) supports Chaosnet over Ethernet.
-However, around 2004-2005,  Chaosnet support was developed for hardware emulators used in ITS and LISP machines. Motivating factors included historical accuracy and functionality. Also in 2005, [[https://gitlab.isc.org/isc-projects/bind9|bind9]], the popular DNS server, was [[its>chaos-dns|patched to support Chaosnet data]] (it was described in [[rfc>1024|the original RFC]], and bind9 now supports it out-of-the-box).
+Today, Chaosnet can be used on (at least) the following systems (see below for more details):
+  * [[wp>ITS]] under the [[https://github.com/PDP-10/klh10|klh10]] or [[https://github.com/simh/simh|SIMH]] emulators
+  * the CADR [[wp>Lisp Machine]] with the [[https://tumbleweed.nu/r/usim/doc/trunk/README.md|usim]] emulator
+  * The [[https://github.com/dseagrav/ld|LambdaDelta]] Lisp Machine emulator
+  * [[https://github.com/Chaosnet/Chaosnet-for-4.1BSD|4.1BSD]] Unix under the simh emulator
+  * The [[https://github.com/Chaosnet/minits|MINITS]] operating system under the simh emulator
+  * [[wp>TOPS-20]] (work in progress)
+  * [[wp>Multics]] (work in progress) under the [[https://gitlab.com/dps8m/dps8m/|DPS8M]] emulator
+  * [[wp>OpenVMS|VMS]] (work in progress)
+  * most linux-like operating systems (Linux, OpenBSD, macOS) using the NCP interface of the [[https://github.com/bictorv/chaosnet-bridge|Chaosnet bridge]] program.
+==== - Historical developments ====
+Around 2004-2005,  Chaosnet support was developed for hardware emulators used in ITS and LISP machines. Motivating factors included historical accuracy and functionality. Also in 2005, [[https://gitlab.isc.org/isc-projects/bind9|bind9]], the popular DNS server, was [[its>chaos-dns|patched to support Chaosnet data]] (it was described in [[rfc>1024|the original RFC]], and bind9 now supports it out-of-the-box).
 {{ ch11-front.png?100|CH11 interface - picture by Angelo Papenhoff}}
-For the [[https://github.com/PDP-10/klh10|klh10 emulator]], an implementation of the [[its>ch11|CH11 hardware interface]] was done (around 2004) which transports Chaosnet packets in UDP datagrams, and where mappings could be defined between Chaosnet host addresses and IP addresses (and UDP ports). For the CADR emulator [[http://www.unlambda.com/cadr/|usim]] by Brad Parker, an implementation over "unix" sockets was included, including a file server, but which only allowed local communication on the host system.
+For the [[https://github.com/PDP-10/klh10|klh10 emulator]], an implementation of the [[its>ch11|CH11 hardware interface]] was done (around 2004) which transports Chaosnet packets in UDP datagrams, and where mappings could be defined between Chaosnet host addresses and IP addresses (and UDP ports). For the CADR emulator [[http://www.unlambda.com/cadr/|usim]] by Brad Parker, an implementation over "unix" sockets was included, including a file server, but which only allowed local communication on the host system. (For the latest version of the CADR emulator, see [[https://tumbleweed.nu/r/usim/doc/trunk/README.md|here]]!)
 {{ symbolics3640.gif?100|A Symbolics 3640 Lisp machine}}
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 In 2016, Lars Brinkhoff started [[https://github.com/PDP-10/its|the ITS resurrection project]] which made ITS more wide-spread, and in 2017, Daniel Seagraves released [[https://github.com/dseagrav/ld|LambdaDelta]], an emulator of the LMI Lambda lisp machine, which supports Chaosnet over Ethernet.
-There is also Chaosnet support for [[https://github.com/Chaosnet/Chaosnet-for-4.1BSD|4.1BSD]] and [[https://github.com/Chaosnet/minits|MINITS]], e.g. under the [[https://github.com/simh/simh|SIMH]] emulator.
+There is also Chaosnet support for [[https://github.com/Chaosnet/Chaosnet-for-4.1BSD|4.1BSD]] and [[https://github.com/Chaosnet/minits|MINITS]], e.g. under the [[https://github.com/simh/simh|SIMH]] emulator. Work is in progress on restoring Chaos also to [[wp>TOPS-20]], [[wp>Multics]], and [[wp>OpenVMS|VMS]].
 {{ Lambda.png?100|An LMI Lambda}}