Parallel Prot Interfaceing

[Ramandeep]

Hi I recently done some browsing on the web to find how to interface the computer's parallel port so that I may control external stuff with it.

I found a dll file that has the functions in it to switch on and off particular pins, this is all fine but I want to know what the actual function/sub look like for leaning purpose.

The dll was by Fred Bulback and is called io.dll and can be found at:
http://www.southwest.com.au/~jfuller/bulback

I have also found how to build interface card's to control small relays witch in turn can be used to control other devices like motor etc.

Can any one show me through code a example on how to achieve the same thing as the above dll.

THANKS IN ADVANCE!!!

Check out this page, there are great freeware DLLs and documentation. There are ones similar to INP and OUT in QBasic.

http://www.lvr.com/parport.html

or one of the DLLs:

http://www.lvr.com/files/inpout32.zip


Sunny

[Ramandeep]

That's a bit like what I already have and the dll is compiled. I want to see the code in it or similar.

Thanks for the help anyway!!!

Any one know of a safer way, perhaps through API off interfacing/controlling the pins on the Parallel prot?