Aha.  So the example used A4 for the Dallas 1-wire for convenience would =
you say, or was there another reason?  (My example used A4 to pull the =
line down, and Bx to read it.)

-----Original Message-----
From: pic microcontroller discussion list =
[mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Jinx
Sent: Friday, June 04, 2004 13:38
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [PIC:] How to make pin RA4 on 16F877 I/O?

>  Which was why I asked if another pin could be substituted for A4

You'll find that the substitution is not equal both ways, because all =
other
pins can both sink and source current, whereas A4 can only sink. The
substitution of any other pin for A4 will work in almost every situation =
but
the substitution of A4 for any other pin might not. It's something you'd
have to look at on a case-by-case basis, bearing in mind the limitations
of A4

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