are you writing this in asm? i have some projects that i have worked on that cover all the areas you are talking about and i have a project coming up that is very similar to yours so keep us posted. and yes bob is right, check out the microchip's pdfs they helped me with the ps2 interface. -- View this message in context: http://www.nabble.com/Interfacing-with-PS2-and-RS232%2C-which-chip--tp18177172p18501533.html Sent from the PIC - [PIC] mailing list archive at Nabble.com. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist