From:	BSimon AT randata DOT com DOT au (Brendan Simon)
Subject:	Device Drivers & cygwin32/mingw32
1 Feb 1998 17:13:56 -0800 :
Message-ID:	<c=AU%a=_%l=MELADMIN-980202010358Z-737.cygnus.gnu-win32@meladmin.randata.com.au>
Mime-Version:	1.0
To:	"'GNU-Win32'" <gnu-win32 AT cygnus DOT com>

I wish to do some data logging with an off the shelf counter/timer card.
As far as I know there are no device drivers for Win95/NT available;
just a library
of functions for DOS using direct I/O access.

As far as I'm aware, Win95 tries to be a protected operating system and
doesn't
allow direct I/O access from an application.  Access must be via a
device driver.
I Linux can use direct I/O if you run as root.
Is this possible with Cygwin32 or MinGW32 ??

I guess writing a driver is the way to go ( I need to rewrite the code
to access
the card anyway as the libraries supplied do not do what I want ).

Can anybody give example code of I/O access in a driver format for
Cygwin or MinGW.
A simple skeleton program would more than suffice.

------------------------------------------------------------------------
-------------

A friend of mine is doing some graphing and data manipulation for the
above data
logging software.  He is using Borland Delphi and I obviously wish to
use one of
the GNU packages.

What is the best way to communicate between the two modules ??
Via DLL or device driver ??
Can a device driver be a DLL.

Thanks for any help.

Brendan Simon
bsimon AT randata DOT com DOT au  or  brendan AT dgs DOT monash DOT edu DOT au

PS. I'm new to Device Driver and DLL programming (if you couldn't tell)


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