> > When your PIC uses only mastermode, give SW a chance ! > I think, there are a lot of implementations around. > Only for slave-mode there is no other way then hardware... Actually, slave mode is probably easier to implement in software than master mode (of course, the hardware peripheral makes slave mode very easy, so I wouldn't recommend implementing it in software). Master mode is only easier when you can be sure (which is true, in this case, I agree) that there is only one master on the bus. Greetings, Maarten Hofman. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist