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The quick'n'dirty way (in win9x) is to use
Functions > Advanced > Port I/O > In Port.vi and Out Port.vi
You can read or write to SPP/EPP addresses by using these functions.
The better way is to call external dll, that is written for LPT access.
W*driver is an easy tool to make such dll.
Post edited by Cluricaun
After I study Labview for couple days, it seems pretty nice to use it to control parallel port.
Labview with professional version costs $2000 USD. However, you can use Evaluation version with 30 days. I guess it's enough to finish your project.
If you are interested on the Labview software. There are few books ready for you to download from the download/upload for the ebook forum. please go to take a look.
I've got an example with a cycnal-testboard. I didn't write it by myself, but the author used the Call Library Function to load a *.dll. He used it for initialisation but also for communication.
I know thats not very much, but it could give you an idea.
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