Hi Tony,

I've used a 16C73A in this mode. The key for me was that you can't use any
instruction that does a read-modify-write. In other words, if you write to
port a, no problem. But if you do any bit write operations ON ANY PIN of
port a, it will clear your "analog" pin. So always use a shadow register.

I was using it for the clock line of a 93LC46A and it worked reliably as
long as I did what I described.

Cheerful regards,

Bob


> I though if an anlog pin was set as an output you could use it as an
> output pin capable of driving whatever.

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