Hello
 A question please this is for a pic 16c84:
        BSF     STATUS,RPO      ;select bank 1
        MOVLW   31              ;value used to initialize data direction
        MOVWF   TRISA           ;set ra <0:4> to input mode

        CLRF    PORTB,1         ;Initialize portb by clearing output data latche
s
        BSF     STATUS,RPO      ;select bank 1
        MOVLW   55              ;value used to initialize data direction
        MOVWF   TRISB           ;set rb <0:7> to output mode
        BCF     STATUS,RPO      ;select bank 0
        CLRF    PORTB,1         ;return output pins low
When I use this to initialize the port's. The output pins go high
briefly if I do not
clrf portb, the port does'nt respond.I hope this is enough data to
elicit a response.
 also is there a minimum clock speed for writing to an lcd module.
Tony M.