Banksel. Good practice?

[HerbertMunch]

Hi all,

Just wondering why people always seem to use RPO to change to banks, when banksel directive will change banks for you?

i.e

	bsf 	STATUS,		RP0  ;bank 1

Is it not to be trusted or does it produce slower code than doing it by hand?
many thanks

 

[Nigel Goodwin]

Banksel produces two lines, like the example below, as long as you know what bank you're already in you don't need to use both lines - so it's slightly less efficient.

            BSF     STATUS    , RP0
            BCF     STATUS    , RP1
            MOVLW   0x06
            MOVWF   ADCON1
            BCF     STATUS    , RP0
            BCF     STATUS    , RP1

 

[HerbertMunch]

ok thnx nigel