Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!unmvax!ncar!ames!ucsd!ucsdhub!hp-sdd!ncr-sd!ncrlnk!uunet!mcvax!ukc!stl!stc!iclbra!siesoft!steve
From: steve@siesoft (steve)
Newsgroups: comp.windows.ms
Subject: Re: Windows SDK
Message-ID: <1174@argon.siesoft>
Date: 3 Feb 89 09:32:58 GMT
References: <106580019@hpcvlx.HP.COM> <245400010@uxe.cso.uiuc.edu>
Reply-To: steve@siesoft.uucp ()
Organization: Siemens SDG, woodley, England
Lines: 14

In article <245400010@uxe.cso.uiuc.edu> mcdonald@uxe.cso.uiuc.edu writes:
>
>
>Windows doesn't prevent accessing TSR
>device drivers through software interrupts or global addresses in 
>low memory. I used this method and it works fine. The Windows program
>checks the device driver at every timer tick. 


    Beware the use of software interrupts with Windows - it will cause
problems if you try it with Windows 386, since a different table of
interrupt vectors is maintained for each virtual machine.

    Steve Draper (steve@uk.co.siesoft)