MICRODEM is a microcomputer mapping program written by
Professor Peter Guth of the Naval Academy. The program is freeware;
license is freely give to any user to freely use the program without any
To get the program:
Complete MICRODEM install (~30
MB). This installs the 64 bit version, which should go in
the location the installation program suggests. Installing anywhere
else is liable to lead to problems which we will not try to troubleshoot. This
version may well
not be current.
- The best way to update the program EXE depends on
your OS, the security imposed by your network, and whether you have admin
rights. In order of ease of use, these are:
- Option on the Files, Tools menu inside
will close the program and update the executable, and
restart the program. Your current version
will be archived if you wanted to revert to it.
- Use the
- When you update the program, it may ask to
download new support files which should be small be small downloads.
These are required to support changes to the data sets supported by the
- The best way to get or update the help file (65 MB) is to
use the option on the Files, Tools menu, or on the help menu inside
MICRODEM. Insure the help file is closed first. If it fails,
MICRODEM help file here. Use
the "Save file as" or "Save target as",
the MICRODEM directory (c:\microdem),
and insure the browser does not append (1) or (n) to the file name.
You are likely going to have to change the file properties to
unblock it (right click on the file in Windows File Manager, pick option at bottom right
Help system is now online (no index, no table of contents, no search functions,
which are only available with the CHM file)
Executing the installation program will create
icons on the start menu and two directories:
- c:\microdem. You can put this elsewhere, but if you encounter problems, you were warned
and we will not try to figure out what is wrong.
- c:\MapData\ with subdirectories. You
can put this on another drive, but it must go into the root
directory of its drive.
The program will create a log of program
operations in the file 'microdem_debug_log.txt', in
c:\microdem\logs; the easiest way to get the file is to to open
it from the Help menu while the program is still running.
You must copy this file immediately after encountering an
unexplained crash, because the file is overwritten every
time you run the program. Send the file to me and I can
better determine what caused the problem. The debug log
is not complete, and I may have to add additional
debugging messages to the program and have you repeat the
error and send a new log until we can isolate the
If you want to perform code archaeology, you can get the
DOS source code from about 1995.
Last Update: 1/11/2019