www.freedos.org has at least one and a few other bits and pieces:
http://www.freedos.org/perlfect/search/search.cgi?lang=en&q=himem
>> RCini(a)congressfinancial.com 19/02/2002
19:03:32 >>>
Does anyone have the source code to a sample XMS driver like
HIMEM.SYS? Another learning project is in the works...