Spehro,

I already have system setup which uses pic and max232.  Now however, I want
to use rs485 instead of 232.  So I am quirous, can I dump the max232 and use
max485/487 and get away with not chaning the code (tested and bullet broof,
so I do not want to change it) but maybe make small changes to the
schematic.

Any ideas?

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