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As I recall, the OUT command posted a byte value directly to a hardware port. In general, Windows (at least in the last 5 years) is designed to prevent direct access to hardware features.

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johnwm
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johnwm is correct. I used to write and read directly to a digital input/output circuit board. example in hex....
out &h200,&h2 would make bit 2 of port 200 go high or turn on. inputs would be inp(&h200). I just assumed there has to be a way to still write applications for these boards. They
are actually quite versatile. 16 inputs and 16 outputs. Quite a bit of control to the outside world with this.
Any thoughts now with a little more detail?

thanks
 
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thank you a hundred times over robingobyn , that was exactly what I have been looking for. I posted this question on another forum 6 months ago and never got any response! Thanks to all for taking the time to help/read.
 
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