>> When ANx is enabled and TRISxn low (digital output), 
>> you can write to the pin *and then read the actual (analog) level using 
>> the ADC*.

 > But if you write to that pin, the analog voltage present from what
 > you're reading would interfere with the output, wouldn't it?

You can't successfully present analog voltage to a pin that is an 
output. What you are reading with the ADC is how well the digital output 
drivers are doing their work against the load.

-- 

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu

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