This was very helpful (especially the nested loops)!  The "cblock" usage is
clever, too.  In correspondance with my other "re:" post, could I do this?:

cblock 0x20
; stuff in bank 0
endc
cblock 0xA0
; stuff in bank 1
endc
cblock 0x110
; stuff in bank 2
blahdeblahblahbloo
endc
cblock 0x190
; stuff in bank 3
endc

..then refer, for example, to "blahdeblahblahbloo" (after of course setting
the RC0/1 flags correctly) directly in code?  I.e.:

bsf STATUS, RP0
bcr STATUS, RP1
movfw blahdeblahblahbloo

..?

Thanks,
Kieren

----- Original Message -----
From: "Brendan Moran" <bmoran@MILLENNIUM.CA>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Thursday, July 18, 2002 5:40 PM
Subject: Re: [PIC]: I got the basic ASM blues


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> I haven't used banksel much, and I don't intend to.  The reason that
> I don't use banksel is that while macros can be useful, what they do
> most often, if you don't write them yourself, is confuse you.  I have
> found that I have a hard time using other people's code; unless it
> has very well defined entry and exit points, I have to figure out how
> it operates to be able to use it, and it's usually faster to write my
> own than to use someone else's in that kind of situation.
>
> On top of all that, I highly recommend writing many of your own
> macros, so that you have a better understanding of how the processor
> actually works.
>
> The code that I would use for the same task is:
>
> #include P16F877.inc
> #define constA 0        ;const A and B define the delay between
> flashes, where 0 is the longest delay, and 1 is the shortest.
> #define constB 0
>  cblock H'20'
>  endc
>
>  org 0
>  clrf PCLATH
>  goto main
>  nop
>  nop
>  nop
>
> main: bsf STATUS,RP0
>  movlw H'06'
>  movwf ADCON
>  movlw H'3F'
>  movwf TRISA
>  bcf STATUS,RP0
>
>  cblock
>  temp1
>  temp2
>  endc
>
> loop: movlw 1
>  xorwf PORTA,f
>  movlw    constA
>  movwf    temp1
>
> del1: decfsz temp1,f
>  goto loop
>
>  movlw    constB
>  movwf    temp2
> del2 decfsz temp2,f
>  goto del1
>  goto del2
>
>  END
>
> - --Brendan
>
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