VxD question

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#1615

From: Bahman Khamneian
Date: Thu, 15 Oct 1992 02:12

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We are currently working on a 386/mswindows based system
running in enhanced mode. Our hardware generates an interrupt
that is crucial to our system. In other words, no one
should block this interrupt including the windows system
modal dialog boxes. 

To resolve this problem windows VxD approch is
recommended to us. I would like to know if the
following approch would work:

1) The hardware generates an interrupt.
2) The VxD wakes up and calls another VxD to get
   some device info. 
3) It then packages the info and sends it to a DOS TSR 
   via the provided DLL calls.

The realtime requirements aren't that bad. We have about
ONE second or so to service this interrupt.

Does this guarantee that my intrrupt is serviced?

If not what approch would guarantee it?

What are the pit-falls with the mentioned approch?

How would you approch this problem?


It is likely that we would want to port this product
to pure DOS at some point so ideally (but not 
necessarily) the solution should be portable. 

I appreciate any help/pointers to a solution. please
send your reply to bahman@mdd.comm.mot.com 
I will summarize and post it for others interest.

Thanks in advance,
Bahman Khamneian


Bahman Khamneian   | INTERNET:bahman@mdd.comm.mot.com
Tel: (206)487-5947 | UUCP:    ... uw-beaver!uw-coco!mdisea!bahman
Fax: (206)483-3400 | Motorola-MTA-ID: CBK005@email.comm.mot.com 
Motorola Inc. (MDD), 19807 North Creek Parkway North, Bothell, WA 98011

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Newsgroups: comp.os.ms-windows.programmer.misc,comp.os.msdos.programmer
Path: arc1-ca.pugleaf.net!sparky!uunet!mdisea!bahman
From: bahman@mdd.comm.mot.com (Bahman Khamneian)
Subject: VxD question 
Message-ID: <1992Oct15.021208.13174@mdd.comm.mot.com>
Sender: news@mdd.comm.mot.com
Organization: Motorola, Mobile Data Division - Seattle, WA
Date: Thu, 15 Oct 1992 02:12:08 GMT
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