I don't understand how to set these registers, I have the RA1 pin set as Vref,
and RA0,RA2,RA3,RA5 as anolog inputs. I am trying to use RA4(an3) as the debugin
pin. My registers are set as follows:

cmcon0 = %11110000
ansel = %10101
adcon0 = %01001000

How far off am I? And what do I need to change?

Thanks