Just a minor one here...

On 2010-02-17 22:20, ivp wrote:

> ... There
> can be also RP2 and RP3, so you might end up in bank2 or bank3.

Now, here I do not follow. RP0/RP1 are enough for *4* banks
(bank0 - bank3). What is RP2 and RP3 ? Or are you talking
about a PIC18 ?

> I've used RPx explicitly only once. That was a very tight parallel data
> transfer loop between two PICs when the direction had to be changed
> faster than BANKSEL did it.

And this must have been on a 4-bank-PIC where BANKSEL always
generates 2 BCF/BSF instructions. On a smaller PIC with only
2 banks there is no speed difference between BANKSEL and
directly manipulating the (then only) RP bit since BANKSEL
will (or should) generate a single BCF/BSF instruction anyway.

Nevertheless, BANKSEL is the right way to write readable code,
just as you say... :-)


>
> wbr
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