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Problem dealing with parallel port

I want to write to parallel port to drive a device. In the code, I use run
time library function _outp() to write to the pin D0 as following:

_outp(0x378, 0x01);

I got an exception: "privileged instruction"

Looks like it doesn't like me to write to the port directly. I'm using
WinXp/Win2000. Any ideas to write to parallel port?
Nov 17 '05 #1
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