So I read up on bank selection and added it, but still can't get port A=20
to be inputs.  Now, if I try port C as inputs, that also does not work.

This is what I have for port C...

    LIST P=3D16F872
    INCLUDE "p16f872.inc"
    ERRORLEVEL -224
    __CONFIG _PWRTE_ON & _RC_OSC & _WDT_OFF & _LVP_OFF

    ORG 0

    bcf STATUS,RP0    ; Bank0...
    bcf STATUS,RP1    ;    ...bank0
    clrf PORTC
    bsf STATUS,RP0    ; Bank1
    movlw 0x06
    movwf ADCON1      ; Port A all digital
    movlw 0x0F
    movwf TRISC       ; Port C -- only RC0:RC3 are inputs.

    movlw B'00000000'
    movwf ADCON0      ; Turn off A/D
    movwf TRISA       ; Port A is all outputs
    movwf TRISB       ; Port B is all outputs

loop:
    movf PORTC,0
    movwf PORTB

    goto loop

    end


Inputs are connected to pins 11,12,13,14.  LED's at all 8 RB's.

Possibilities -- I'm missing something fundamental here.
I fried the chip during one of the previous mis-configurations.  =
However, I tried
downloading walk.asm again and it works (though only outputs).  Is it =
possible
to fry only part of a PIC?

Thanks,
-Neil.

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