On Tue, Aug 05, 2008 at 05:46:37AM -0400, Daniele Salatti wrote:
> 	movlw	0x07
> 	movwf	CMCON			;turn comparators off (make it like a 16F84)
> 
> 	bsf 	STATUS,		RP0	;select bank 1
> 	movlw 	b'00000000'		;set PortB all outputs
> 	movwf 	TRISB
> 	movwf	TRISA			;set PortA all outputs
> 	bcf	STATUS,		RP0	;select bank 0
> 
> Loop	
> 	movlw	0xff
> 	movwf	PORTA			;set all bits on
> 	movwf	PORTB

I think the problem is that you're not changing banks before accessing a
register. Here is how you correct this:

> 	movlw	0x07
        banksel CMCON
> 	movwf	CMCON			;turn comparators off (make it like a 16F84)
> 
> 	bsf 	STATUS,		RP0	;select bank 1
> 	movlw 	b'00000000'		;set PortB all outputs
        banksel TRISB   ; TRISA is in the same bank as TRISB.
> 	movwf 	TRISB
> 	movwf	TRISA			;set PortA all outputs
> 	bcf	STATUS,		RP0	;select bank 0
> 
> Loop	
> 	movlw	0xff
        banksel PORTA
> 	movwf	PORTA			;set all bits on
> 	movwf	PORTB

Matthew
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