How can I access the parallel port?

[umb365]

I am working on a HP workstaion, C3750.
I want to light up some LEDs via the parallel port to show the status of my program. But I can't find out any technical documentations for it. Can anybody here give me some tips or demo C code?
Thank you advance.

[Peter Godron]

Hi,
have you had a look at:
man cert
man ioctl
man 7 intro

These may give you a pointer in the right direction. Have to admit, I have never tried to use the parallel port as a indicator.

Good Luck and please update with your findings!