Unable to get 2 inputs to work

[rangerdoc]

I'm using a PIC 16F747 as a BCD decoder w/ LCD display. I've also included a stopwatch function. Everything works as desired except I can't get pins RB4 & RB5 to work as digital inputs. RB6 & RB7 are working as inputs for the timer (start & clear). Can anybody look at this and see what I'm missing? I suspect I need to use ADCON, but I'm having difficullty finding info on the proper usage.

Thanks,

'initialize device
@ device pic16f747, INTRC_OSC_NOCLKOUT, MCLR_OFF
OSCCON = $60			'internal 4mHz oscillator
define lcd_ereg porte
define lcd_ebit 0

'Initialize ports
TRISA.6 = 1
TRISA.7 = 1
TRISB = $F0
TRISC = $FF			'set all PORTC pins to inputs
TRISD = 0
PORTD = 0

'initialize variables
Index var byte
x var byte
switches var byte
Symbol START_button = PORTB.6
Symbol STOP_button = PORTB.5
Symbol CLEAR_button = PORTB.7
Ticks var byte
Minute var byte
Second var byte
Disp var byte
Delay var byte  

'Initialize LCD
	Pause 1000			'pause 1 sec to let LCD initialize
	LCDOUT $FE,1,"            Firing Panel V.2"
	pause 2000

SETUP:
	LCDOUT $FE,1,"Firing Mode:"
	LCDOUT $FE,150,"Panel Selected:"
	LCDOUT $FE,192,"Wireless Bank:"
	lcdout $FE,214,"Time:"
	Minute = 0
	Second = 0
	Ticks = 0
	Disp = 1
	OPTION_REG = $05
	ON INTERRUPT GOTO ISR 

LOOP:	
    	Index = PORTc & $0F		'Read DIP switch AND mask lsb
  	LOOKUP2 Index,[ 1, 2, 3, 4, 5,06,07,08,09,10,11,12,13,14,15,16],x
    	LCDOUT $FE,166, #x

DISPLAY:
	IF Index = 0 THEN		'Panel 1 selected
		PORTD = $06	'display 1 on LED display
	endif
	IF Index = 1 THEN
		PORTD = $5B	'...
	endif
	IF Index = 2 THEN
		PORTD = $4F
	endif
	IF Index = 3 THEN
		PORTD = $66
	endif
	IF Index = 4 THEN
		PORTD = $6D
	endif
	IF Index = 5 THEN
		PORTD = $7C
	endif
	IF Index = 6 THEN
		PORTD = $07
	endif
	IF Index = 7 THEN
		PORTD = $7F
	endif
	IF Index = 8 THEN
		PORTD = $67
	endif
	IF Index = 9 THEN
		PORTD = $BF
	endif
	IF Index = 10 THEN
		PORTD = $86
	endif
	IF Index = 11 THEN
		PORTD = $BB
	endif
	IF Index = 12 THEN
		PORTD = $CF
	endif
	IF Index = 13 THEN
		PORTD = $E6
	endif
	IF Index = 14 THEN
		PORTD = $ED
	endif
	IF Index = 15 THEN
		PORTD = $FC
	endif

LEDS:
	switches = (PORTC >> 4) & $0F
	if switches > 0 then
		goto LEDSLCD:
	else 
		goto BLANK:
	endif

LEDSLCD:
	IF switches = %00000001 THEN
		lcdout $FE,207," J  "
		portB=1
	endif
	IF switches = %00000010 THEN
		lcdout $FE,207," K  "
		portB=2
	endif
	IF switches = %00000100 THEN
		lcdout $FE,207," L  "
		portb=4
	endif
	IF switches = %00001000 THEN
		lcdout $FE,207," M  "
		portb=8
	endif
	
BLANK:
  	IF PORTA.6 = 1 THEN
		portb = 0
		lcdout $FE,207,"None "
	endif

SAFETY:
	IF PORTA.7 = 1 THEN
		lcdout $FE,141,"ARMED"
	ELSE
		lcdout $FE,141,"SAFE "
	endif

RESET:
	IF portb.4 = 1 THEN
		goto setup:
	endif

TIMER:
	IF START_button = 1 THEN
		TMR0 = 0
		INTCON = $a0
		Disp = 1
	endif

	IF STOP_button = 1 THEN
		INTCON = 0
		Disp = 1
	endif

	IF CLEAR_button = 1 THEN
		INTCON = 0
		Minute = 0
		Second = 0
		Ticks = 0
		Disp = 1
	endif				'Line 171

	IF Disp = 1 THEN
		lcdout $FE,220
		lcdout DEC2 Minute, ":",DEC2 Second
		Disp = 0
	endif
	GOTO Loop:

DISABLE					'Line 180
ISR:
	Ticks = Ticks + 1
	IF Ticks < 61 THEN NoUpdate	
		Ticks = 0
		Second = Second + 1
		IF Second = 60 THEN
			Second = 0
			Minute = Minute + 1
			IF Minute = 60 THEN
				Minute = 0
			endif
		endif

	Disp = 1

NoUpdate:
	INTCON.2 = 0
	Resume
	Enable

	End
	
END

[rmteo]

I'm using a PIC 16F747 as a BCD decoder w/ LCD display. I've also included a stopwatch function. Everything works as desired except I can't get pins RB4 & RB5 to work as digital inputs. RB6 & RB7 are working as inputs for the timer (start & clear). Can anybody look at this and see what I'm missing? I suspect I need to use ADCON, but I'm having difficullty finding info on the proper usage.

The best place to get answers to these type of questions is to read the device datasheet.

[Bruce]

Check the value shown in the data sheet to load into ADCON1 to make all pins digital.

[mackrackit]

This thread will also apply to your PIC even though we are talking about PORTB.
http://www.picbasic.co.uk/forum/showthread.php?t=561

[rangerdoc]

This thread will also apply to your PIC even though we are talking about PORTB.
http://www.picbasic.co.uk/forum/showthread.php?t=561

Thanks... This put me on the right track.