>=20
> I just checked, and my standard init code does not address CMCON0. I don'=
t
> have a manual for a PIC with comparator where I am right now, but I don't
> remember CMCON0. What PIC has that, and what does it do?

 Well, I just ported the evil code discussed in another thread to 16F688=20
(probably one of the more interesting devices in the 16F series), and that=
=20
PIC turns out to be using CMCON0... Just like CMCON on other PICmicros it=
=20
needs to be initialised to 0x07 in order to allow proper digital I/O,=20
together with clearing of ANSEL. It also has CMCON1, which is related to=20
Timer1, but which doesn't impact the ports. Also note that the 16F688 uses=
=20
PORTC instead of PORTB. Thank you for the reference to the document, I'll=
=20
read it now.
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