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From: jfjr@mbunix.mitre.org (Freedman)
Newsgroups: comp.os.msdos.programmer
Subject: int 70h
Message-ID: <127744@linus.mitre.org>
Date: 15 Jan 91 18:19:49 GMT
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  I need to get a timer of about 1 millisecond granularity.
My first impulse was to check out int 70h. Since then
a very kind soul (Greg Montgomery) sent me some code
that speeds up the system timer - hooks int 8. I got
this working fine but just for my own self I tried
hooking int 70 anway (oops COmpaq 382/203 runnung dos 3.31)
and it doesn't look as though its even implemented. 
Has anyone any experience with this particular interrupt?
Its not very well documented which leads be to beleive
that it might not even be there.

                           Jerry Freedman,Jr