Looking at the table for the PCFG3:PCFG0 bits in the ADCON1 register in the Microchip mid range refence handbook (PIC16F876), it appears that you can't select one of the higher order channel numbers as analog input without selecting the ones below as analog as well. In other words, can I use port A3 as analog input and ports A2:A0 for digital? I just want to be sure I'm reading the table correctly.