Hello,

>Being a master is done by bit-banging on all PICs.
>
>Multi-master I2C is much more complex. It is a bus, not simple
>point-to-point.
>Think of it as a tiny local area network. You have similar issues.
>As well as collision detection, arbitration, you must think carefully about
>how your application deals with it.

It isn't so hard. If you follow the I2C spec, there won't be any collision
and it has a built in arbitration scheme.

Regards
Les