Just come back to PICs after a very long break. Just updating an old project, on
a 16F84. Very simple, just flashes LEDs etc.

Now changed rb6 and rb7 to inputs to read a pair of simple switches, which are
pulled low by 10K res, then switch pulls them high.

I've set to inputs like this....

move to bank 1
    movlw    b'11000000'
    movwf    TRISB
return to bank0
etc

then read them as
    btfsc    portb,6
etc

but when run PIC does not recognise state of RB6 and RB7 -a simple voltmeter
check on them gives approx 1.55 volts when they are not pulled high by input
switch.

Can anyone suggest what is causing this? I think it is something simple and I'll
kick myself when I realise....

Stuart

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