Dear mr. Sergeev,

As you can read in the chapter you're referring to only ASSEMBLER COMMANDS are given to read an input pin or (re)set an output pin. They are of no use to me as I'm programming in a ANSI C compiler.

Furthermore the chapter gives ZERO information on how to define pins as in-or output. (I was looking for a memory adress where I can define the pins to be either IN or OUTputs. As mr. Taylor and mr. Malund state, it may not even be necessary to do so, I'll try that first.)

Thanks for your assistance mr. Sergeev.