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Mail Archives: djgpp/2001/01/08/06:21:41

From: "Tonu Aas" <tonu AT ids DOT ee>
Newsgroups: comp.os.msdos.djgpp
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Subject: Re: Async COM managing
Date: Mon, 8 Jan 2001 13:13:09 +0200
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

> The documentation is terse. But the PM-API is basically just a wrapper for
> the VXD-to-VXD interface of VCOMM, which is documented better.
> Constants can be looked up in the header files, ans structures are
> declared there, too.
> What I don't understand is why pointers are passed as 16:16 and not
> 16:32? Could that mean buffers have to reside in low DOS memory?

    Maybe because PM-API and V86-API are the same.
In VCOMM vxd DDB Entry they have same entry point.
Somebody says that everything except receiving (or sending) data works ok
even in V86 mode.

Tõnu.


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