From Maxim App note 126:

Quote:

1) The communication port must be bidirectional, its output is open-drain, and there is a weak pull-up on the line. This is a requirement of any 1-Wire bus. See Appendix A in Guidelines for Reliable 1-Wire Networks (Application Note 148) for a simple example of a 1-Wire master microprocessor circuit.

Does this mean that only a port 0 pin can be used to drive a 1-wire peripheral directly using bit-banging, or can I "adapt" one of the other port pins to do it?