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Deva,
If you want to avoid bank switching entirely, you can move to a PIC18F
series chip.  Incidentally, the 16F84 is now obsolete.  If that's what you
have available for whatever reason, that's fine, but the 16F628 is a much
more powerful controller, with the same instruction set as the 16F84.

That said, bank switching can be done in any C compiler that supports
inline assembly by using the BCF and BSF instructions.  You should be able
to use something like:

#inline bsf STATUS,RP0
var1++
#inline bcf STATUS,RP1

Now, understand that this is not good code, but it will do in a pinch, just
make sure to fix it later. It is not self documenting, and it would be far
better if you could use bank switch macros or get the compiler to handle it
properly.  Speaking of which, doesn't the C compiler handle switches if you
overrun the amount of RAM available in one bank?

Hope that helps.


At 07:48 AM 15/08/2002 +0300, you wrote:
>  Hi Deva,
>  Could you explain, please, why you choose PIC16F84?
>Why not other PIC? I'm just wondering.
>  I'll not comment your choice, since I've got a
>shut up command, though in polite manner from one
>of List's heavy-weight during the discussion beginner's
>choice. "Freedom of speech", you know, is as knotty
>problem as 16FXX bank switching.
>
>  Mike.

Mike, on this list, it is difficult some times to tell the difference
between vehemence and anger.  Are you certain that it is a "shut up
command" and not an "I disagree with you"?  For the record, I think that
the 18F parts are great, but they're not as available as many of the 16F
parts.  Note that the OP said that there wasn't enough time to switch to a
larger processor.  I presume that the OP would use a better one under
looser time constraints.

Regards,

- --Brendan
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