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hello
I've tried those routines like _oup(),.They all work good under WIN95 and WIN98, but not supported by WINNT.
I also have tried
CrearteFile()
WriteFile()
ReadFile()
NT just not support.
NT doesn't allow operate on hardware directly ,It always tell me that I have no privilege .
What should I do under NT?
THANKS!
Well
I'm using CreateFile, WriteFile successfully under windows NT
and I can't agree NT doesn't support it.
What I guess your problem could be, as you actually mentioned,
are security problems.
I work using full prilleges as administrator and there are no problems.
So you should check security options.
Window NT don't let to communicate directly with hardware and ignore functions like _outp() . You need to write kernel-mode driver to access ports under WindowsNT.
However Win32 functions like CreateFile etc. work peferctly under any Win32 platform.