Robert Rolf wrote 2013-10-03 03:15:
> One oversight many programmers make is to have a call to some
> close-up/finish routine, immediately followed by a return to a higher
> level. Just GOTO that call and let IT do the return to save on the local
> return word.
>
> There may even be occasions where you can rearrange the code so that
> the 'goto' becomes a 'fall through' so no branch required to get into
> the final function.
>
> I saved 10's of words by carefully rearranging my hex/decimal output
> routines so that I could use a lot of 'fall through' to complete
> functions.
>
> If you can group your subroutines into one bank, and KNOW that they
> will always be called from within that bank, you can eliminate a lot of
> bank switching.
>

If you can group your subroutines into one page, and KNOW that they
will always be called from within that page, you can eliminate a lot of
page switching.

Not?

Jan-Erik.



>
> I too would love to find a tool to do call graphing and stack depth
> tracking.
>
> When you're counting bytes, every byte counts.
>
> Robert
>
>
>
>
> On Wed, Oct 2, 2013 at 4:53 AM, Byron Jeff
> <byronjeff@mail.clayton.edu>wrote:
>
>> On Tue, Oct 01, 2013 at 04:30:56PM +0300, a.glowing.pear@gmail.com
>> wrote:
>>>> Note that the newer PIC16F1xxx ("Enhanced Midrange") series has a
>>>> faster bank switching then the older PIC16. One single instruktion
>>>> instead of 2 (on the old 4 bank models).
>>> True, the Enhanced Midrange PICs are really flexible in their
>>> bankswitching, but it sill has to be done. I've always found it a
>>> bit frustrating that SFR for a particular module do not fall in the
>>> same bank. For example, if reading LATx and regular switching of
>>> it's direction has to be done, you do need to switch banks.
>>
>> True. My normal mode of operation is to default to Bank 0 and only
>> switch when the targer is in another bank. If I need extended access
>> between two banks, instead of switching back and forth, I use one of
>> the two FSR/INDF pairs in the enhanced architecture to point to the
>> second bank.
>>
>> BAJ -- Byron A. Jeff Chair: Department of Computer Science and
>> Information Technology College of Information and Mathematical
>> Sciences Clayton State University http://faculty.clayton.edu/bjeff --
>> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
>> View/change your membership options at
>> http://mailman.mit.edu/mailman/listinfo/piclist
>>
>>
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