IDLEHLT16 1.5 had been released (2014/07/13)
http://hobbes.nmsu.edu/h-search.php?key=idlehlt16-1.5.zip
IDLEHLT16 is a driver to keep systems cooler by calling HLT compiled for OS/2 1.x. It is based on HLTDriver source code. Source code and Binaries are available for download.
Changelog for version 1.5:
BUGFIX: Version 1.3/1.4 causes GP Fault on OS/2 1.2!. Fixed by re adding Watcom compiler option -zu.
Changelog for version 1.4:
It reduces file size by 83% using more native API calls.
Information: http://www.os2world.com/wiki/index.php/IDLEHLT16
By: Tobias Karnat