[TriLUG] Line Printer Terminal

[Gaurav Gupta]

I am trying to read/write data from/to the line printer terminal of my laptop.
I used the c program available at
http://www.epanorama.net/circuits/parallel_output.html#linuxprogramming

When I write some data to the data register of the printer port and
try to read it back I see the correct result. But the when I
physically check the pins of the printer port they don't show the
correct data.

I used the base address for the data register as 0x378 (an
introduction is available at
http://www.logix4u.net/parallelport1.htm). Can someone tell where I
could have gone wrong? Maybe the base address on my laptop is
different. My laptop is hp zt3000 model and is running gentoo.

Will appreciate any suggestions.
Gaurav