From f8102346668e1fef45fd260760b58e498b357ffa Mon Sep 17 00:00:00 2001
From: Lars Brinkhoff <lars@nocrew.org>
Date: Mon, 5 Mar 2018 08:57:07 +0100
Subject: [PATCH] Add version number history.

---
 doc/README.md   |  1 +
 doc/versions.md | 29 +++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100644 doc/versions.md

diff --git a/doc/README.md b/doc/README.md
index 7b31e2ee..03fb1716 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -7,6 +7,7 @@
 - DDT: [manual](info/ddt.33), [commands](_info_/ddtord.1462),
   [colon commands](_info_/ddt.:cmnds)
 - [Supported peripherals](peripherals.md)
+- [Version number history](versions.md)
 
 ### Tools
 
diff --git a/doc/versions.md b/doc/versions.md
new file mode 100644
index 00000000..b904a794
--- /dev/null
+++ b/doc/versions.md
@@ -0,0 +1,29 @@
+| Year | Versions | Comment
+| --- | --- | ---
+| 1966 |1? | PDP-6
+| 1968? | |  KA10 support
+| 1971 | 672-703 | Arpanet support
+| 1972 | 720-724
+| 1973 | 785-850
+| 1974 | 915 | KL10 support
+| 1975 | 994-998
+| 1976 | 1025-1044
+| 1977 | 1066-1097
+| 1978 | 1099-1136 | PDP-6 support dropped
+| 1979 | 1138-1168
+| 1980 | 1173-1196
+| 1981 | 1198-1256
+| 1982 | 1256-1283
+| 1983 | 1312-1360
+| 1984 | 1361-1486
+| 1985 | 1487-1539 | KS10 support
+| 1986 | 1554-1588
+| 1987 | 1591-1616
+| 1988 | 1618-1632
+| 1989 | 1633-1634
+| 1990 | 1640-1644 | Last MIT version
+| 1992 | 1645 | By Ken Harrenstien
+| 1997 | 1647
+| 2002 | 1648 | By Paul Svensson
+| 2005 | 1649 | By Björn Victor
+| 2007 | 1650