> the ANSEL register...thats what I was missing from it and
> what I expected to find for the selection

Ah. I believe the F877 was the first with ADC (14000 not
withstanding), so I regard it as the baseline ADC micro.
Subsequent ADC micros, such as the F88, are different
from the F877 (in that they have more functions and need
the ANSEL register), not the other way around. But of
course that all depends on your POV. Different is different.
I used the F877 a long time before the F88 so look at it
chronologically. If you'd used the F88 before the F877,
then you would find things missing (eventually ;-) )

Incidentally, the various analogue products I made with the
F877 taught me, the hard way, that analogue inputs can be
fragile. Two of the products involved relays and solenoids,
and analogue pins were totally munted by ground spikes. These
were down to over -1V and caused the internal diodes to
conduct, frying the pin circuitry. The rest of the chip is fine,
but leaves it really only useful as a stunt PIC. The minimal
solution is to pay attention to ground layout and wire choice/
routing, have current-limiting series resistors and Schottky
diodes to both Vcc and Vss


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