Re: Programming COM/LPT ports under Windows

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#3530

From: Henrik Haftmann
Date: Sat, 20 Apr 1996 00:00

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In article <4l5rl4$q9@kadri.ut.ee>, xvosil@rubiin.physic.ut.ee says...
>        "Is it possible to operate on the API level
>        with COM and LPT ports under Windows?"
>In the other terms, I need to set and check zero/one voltage
>levels on a concrete port pin over a constant time interval.
You can access freely (almost) to the port addresses with inp()/outp() (except 
under Win32). But to prevent other windows apps for accessing the same port, 
you should "allocate" the port with OpenComm().
If you want to prevent access by DOS boxes, I think you have to write a VxD. 
Good luck.
-- 
Henrik Haftmann           | email: henrik.haftmann@e-technik.tu-chemnitz.de
Reichenhainer Str. 51/105 |   www: http://www.tu-chemnitz.de/~heha
D - 09126 Chemnitz        | hobby: teletext in WWW at ~heha/toaster/vtnet.htm

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From: henrik.haftmann@e-technik.tu-chemnitz.de (Henrik Haftmann)
Subject: Re: Programming COM/LPT ports under Windows
Date: 1996/04/20
Message-ID: <4lacvl$p9n@narses.hrz.tu-chemnitz.de>
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