In a message dated 11/7/99 4:50:25 AM US Mountain Standard Time, Phxsys3
writes:

<< Hi

 For networking multiple  Basic Stamps or pics 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 >>


Return-path: Phxsys3@aol.com
From: Phxsys3@aol.com
Full-name: Phxsys3
Message-ID: <0.3cc292d8.2556c181@aol.com>
Date: Sun, 7 Nov 1999 06:50:25 EST
Subject: How to configure for open-drain baudmode for network?
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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