low level port access

[jimay]

How does crystal control obtain low level port access for Windows NT/2000/XP? Is there source code available?

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[CF Mark]

Using CANIO.
And no, no source is avaliable as CANIO is not freeware.

 

[CF Tech]

There is an example program & source here:

https://www.crystalfontz.com/product/cfahwintest