BOAT3D V4.52 -- the Digital
has a long-term commitment to provide simulation software with
3/21/2020 --- I have not changed DMSolver but
have edited in a few items in the html documentation, which is the
current documentation. The .hlp file is helpful but has been disowned
by Microsoft. I have encountered the fact that my former university's
Macafee protection system does not let anyone install my software.
Please email me if you have problems.
3/6/2018 --- Today I am uploading DMSolver 6.03,
which is essentially the same as 6.02, but works with the latest Free
Pascal compiler V 3.0.4, and we are using Lazarus IDE V 1.8.0 (the
Lazarus Team has very recently released newer versions but this
should not matter as far as compatibility goes because they all use
3.0.4. In case it does you can download 1.8.0 here.)
I would like to emphasize that Free Pascal with
its Lazarus Integrated Development Environment (IDE) is a complete
open-source system for developing GUI applications which has been
developed over many years by the Free Pascal and Lazarus Teams. But a
DMSolver user does not have to develop a GUI application from
scratch. I have insulated the DMSolver user from directly using the
complex Lazarus IDE unless the DMSolver user is having bugs in
his/her DMSolver code which he/she wishes to find using the Lazarus
debugger mode. There are directions about this in DMSprogref.pdf
Some version of DMSolver has been operational
since the late 1980's, and Free Pascal started in the 1990's. The
Free Pascal and Lazarus teams are mainly based in Europe -- see freepascal.org.
The Win32hlp file is still useful, but I am making DMSdoc.html the
new standard (It has a few minor edits missing in the DMSolver
5/28/17 --- For a long time DMSolver, EDTECH, and
Flash Calculator have had Win32hlp help files (BOAT3D still has a
traditional text manual). However, Microsoft for a long time has been
trying to deprecate Win32hlp and finally eliminated it in Windows 10,
so the 3 Win32hlp files have been converted to html (not exactly as
good but close). From now you have your choice of Win32hlp as before
or using your browser to read the new html files. older
Some Digital Analytics products:
--- DMSolver provides a
language and algorithm for simulation of large (or small) systems
described by nonlinear ordinary differential and/or nonlinear
algebraic equations. Version 6.03 is now available. DMSolver 6.0x is
about twice as fast as V5.x and has a simplified user interface,
including the interfaces needed to set up problems using its
parameter estimation add-ins.
EDTECH free editor for
technical data and graphics also provides a utility that produces
graphical output from files produced by other Digital Analytics
programs. New version 3.73 fixes the drawing printer interface so you
can more easily use modern printers. 3.74 has a "freehand
drawing" mode which may be useful to some people.
--- BOAT3D application
developed orginally by the late P. R. Payne to simulate planing boats
with 3 degrees of freedom, uses DMSolver methodology which has been
upgraded recently to include some of the speedups in V6.0 DMSolver.
--- Flash Calculator
does vapor-liquid equilibrium calculations for chemical engineering.
--- Some other products are not currently
supported, but details about them have been left in the web pages
because new versions may be developed in the future.
F. Dail Singleton, PhD