16F684 ADC problem

[Archangel]

http://ww1.microchip.com/downloads/e...f684%20data%22

the link above will get you the data sheet, the code below is copied from the data sheet page 33 I believe it is what you need, I would add that input pin appears to require a pullup resistor too.
ASM
BCF STATUS,RP0 ; BANK 0
CLRF PORTA ;Init PORTA
MOVLW 07H ; Set RA >2:0> to
MOVWF CMCON0 ;Digital I/O
BSF STATUS, RP0 ;Bank 1
CLRF ANSEL ;Digital I/O
MOVLW 0Ch ;Set RA<3:2> as inputs
MOVWF TRISA ; and set RA<5:4,1:0>

BCF STATUS,RP0 ;Bank 0
ENDASM

if this turns out to be wrong, keep this in mind,
I did all the typing for you

JS
More lost than many . . too dumb to know it, too darn old to care.

[mister_e]

@MarkEdwards
Your ANSEL setting is wrong. Try
ANSEL %00011111

[markedwards]

Thanks MR E for the reply!

pin 3 RA4, AN3 seems like it is an output because it is low impeadance.
I am trying to measure 0 - 4 vdc and have a 10k series
resistor and a .1uf capacitor. The voltage is loaded down
on some boards, a few boards pin 3 seems to work.
I figure I am missing some configuration setting or don't understand
something. 3 other adc inputs work as expected.

Mark