Hi

For networking multiple  Basic Stamps with 1 pin the Basic Stamp manual shows
the option of using open-drain configuretion to prevent i/o pin damage and
uses a OT argument. I have an application where I want to port a Stamp
program to a pic using PicBasicPro. PicBasicPro also has a OT argument for
the serial routines. I know the Basic Stamp2 uses a pic16c57b.

Does this (OT) open-drain software switch configure the i/o pins differently
or is it an altered software routine?
Can only certain i/o pins be configured this way?
How is this done?

Specifically, can a 12c67x or a 16F84 i/o pins be configured for open-drain
baudmode? I was told that the 12c5x cannot be used in this manner.

Thanks in advance

Jon