Can any one help me by providing a c\c++ code for accessing ports?

i m interested in learning concepts in programs, which control the machines\peripherals attached to a pc. can anyone give me a simple code with a clean explanation.

Can any one help me by providing a c\c++ code for accessing ports?
Some interesting sites which can guide you are:


http://www.learn-c.com/


http://electrosofts.com/parallel/index.h...


http://www.doc.ic.ac.uk/~ih/doc/par/doc/...





Moreover, read advanced C books.





There's a software also, which will make your learning interesting:


http://www.zealsoftstudio.com/ntport/
Reply:In the older C libraries for Intel processors, there are functions named outp and inp that sent a byte to, and received a byte from a given port respectively. In the new processors the in and out instructions are privileged so the operating systems won't let you call them with jumping through the security hoops.