Amaury Jacquot wrote:


> start   bcf     status, rp0     ; select bank 0
>         clrf    portb           ; clears port B
>         bsf     status, rp0     ; select bank 1
>         movlw   0x00            ; all pins in output position
>         movwf   trisb           ; sets direction for all pins to
> "output"
>         movlw   'A'             ; character 'A'
>         movwf   sobuf           ; stores the character in the buffer

I only read this far, but you forgot to reset STATUS,RP0 to point to RAM
page 0 after setting TRISB.

Don't forget about PORTA. If they are all floating inputs, you may have
problems.

Try setting them as outputs if they are not used and are not connected
to anything.



--
Best regards

Tony

mICros
http://www.bubblesoftonline.com
mailto:sales@bubblesoftonline.com

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