| | how to program the pararel inteface circuit PPI 8255 with NASM under linux, Search the Intel site for a datasheet on the 82C55. I assume you know how it's connected in your circuit. Search engines would also be useful if you don't like Intel. It's also listed in Intel and other IC databooks; check your library. They might also have books that will give programming examples, although probably not in nasm syntax. |