parallel port programming???

hi all... i have this assignment and i have to make a file transfer application in C, using parallel and/or serial ports. i have searched the web and i didn't find any easy-to-understand-newbie-focused resource, so if you have some links i would apreciate it.

Which environment?
Dos or Windows?

Ciao

hum... linux, but i guess it should be able to tranfer from linux to windows and windows to linux...

Have you tried opening /dev/lp0 (for linux) or LPT1: for (windows) as a file and reading/writing to them?

I had downloaded a C program for this, pport.zip, some time ago, but I forget from where. So I did a Google on it and found a gaggle of sites -- and they are not all the same program.

I had hestitated replying at first because my copy had a lot of assembly in it. But the first hit I looked at did it in C.

So I suggest that you Google on "pport.zip" or just on "pport" and pick the most suitable of the hits.

thanks for your help... i'll try your suggestions...

Ok, for Linux I got nothing. But I found a really nice
Borland Builder/Delphi component: TComThread. Look
for it on the net. Probably the author did the same for
some linux compiler.

I Google'd on '"parallel port" Linux' and got :

External Parallel Port devices and Linux
http://www.torque.net/linux-pp.html

parapin -- a Parallel Port Pin Programming Library for Linux
http://www.circlemud.org/~jelson/software/parapin/

And over 50 more pages of hits.

The first ones seem to be talking more about writing drivers for devices, which I guess is what you are wanting to do.