docu updates [skip ci]

doc/INSTALL_simh.md

@@ -1,33 +1,18 @@
 # Installation of the SimH pdp11 simulator 
 
+## SimH Classic
 The w11 project uses the pdp11 simulator from the
 [SimH](https://en.wikipedia.org/wiki/SIMH) project. The project was started
-by Bob Supnik under [simh.trailing-edge.com](http://simh.trailing-edge.com).
-This site contains the "classic" version of SimH, the 3.X stream, with v3.11-1
-as the last release. Since about 2014 the project is continued by a team led by
-Mark Pizzolato as GitHub project [simh/simh](https://github.com/simh/simh).
-The new, functionally much enhanced, version is called V4.*. However, the
-team decided not to provide releases anymore, just a stream of commits,
+by Bob Supnik under [simh.trailing-edge.com](http://simh.trailing-edge.com),
+is still maintained, and offers the 3.X stream of SimH releases.
+
+## GitHub simh/simH
+Since about 2014 the project is expanded and continued as GitHub project
+[simh/simh](https://github.com/simh/simh) led by Mark Pizzolato.
+The new, functionally much enhanced, version is called V4.*. However, this
+project decided not to provide releases anymore, just a stream of commits,
 more than 4200 as of April 2022.
 
-Debian and Ubuntu offer `simh` packages, but with the obsolete version V3.8.1,
-released in February 2009. The main obstacle to the inclusion of newer
-versions is, according to the Debian maintainer, the unclear license situation.
-
-The only practical way to obtain the pdp11 simulator is by installation from
-sources. The GitHub repository contains also the classical versions, nicely
-marked with tags.
-
-The `scmd` scripts provided in the w11 project were originally developed for
-SimH 3.8, and worked for SimH 3.9 and later releases. The SimH 4.* development
-over time became incompatible with the `scmd` scripts used for w11 verification.
-See issue [#30](https://github.com/wfjm/w11/issues/30) for details.
-
-The bottom line at the moment:
-- install SimH from [simh/simh](https://github.com/simh/simh)
-- checkout `v3.11-1`
-
-## SimH license changes
 The maintainer of the [simh/simh](https://github.com/simh/simh) GitHub project,
 [Mark Pizzolato](https://github.com/markpizz), decided on May 15th, 2022 with
 commit [ce2adce6](https://github.com/simh/simh/commit/ce2adce6) to change the
@@ -42,10 +27,7 @@ SimH mailing list [simh@groups.io](https://groups.io/g/simh), starting with post
 See especially Bob Supnik's post
 [SimH licensing and the state of the project](https://groups.io/g/simh/topic/simh_licensing_and_the_state/91173868).
 
-Given that situation using version `v3.11-1` as described above is the
-only prudent option for the time being.
-
-## Open-SimH relaunch
+## GitHub open-simh/simh
 The post
 [Announcing the Open SIMH project](https://groups.io/g/simh/topic/91528716)
 announed on 2022-06-03 a re-launch of SimH as FOSS project.
@@ -53,8 +35,20 @@ A new repository [open-simh/simh](https://github.com/open-simh/simh#readme)
 has been set up and provides the SimH code-base under an
 [MIT-style licence](https://en.wikipedia.org/wiki/MIT_License), see
 [LICENSE.txt](https://github.com/open-simh/simh/blob/master/LICENSE.txt).
+Releases are being prepared, but not offered as of 2023-02-03.
 
-The community will certainly move to open-simh, so best solution is currently
-- install SimH from [open-simh/simh](https://github.com/simh/open-simh)
-- checkout `v3.11-1`
+## Debian packages
+Debian and Ubuntu offer `simh` packages, but with the obsolete version V3.8.1,
+released in February 2009. The main obstacle to the inclusion of newer
+versions is, according to the Debian maintainer, the unclear license situation.
 
+## Installing SimH
+The only practical way to obtain an up-to-date SimH PDP-11 simulator is by
+installation from sources. The currently best solution is to install the
+latest SimH classic release, URL see above.
+
+## SimH startup script provided in the w11 project
+The `scmd` scripts provided in the w11 project were originally developed for
+SimH Classic 3.8, and worked for SimH Classic 3.9 and later releases.
+They should also work for simh/simh and open-simh/simh, but are currently
+most tested with Classic.