On Mon, 2006-08-28 at 21:00 +1200, Brent Brown wrote:

>> You COULD switch to assembler, of course...
>
> COULD but WONT!   :-)

Hmm?

> The one thing that pushed me over the top was adding CRC checking
> for my 1 wire temperature sensors - needed it because I'm getting
> the occasional erroneous result. This adds about 300 program words.

300 words is very excessive for a CRC routine. My one-wire CRC
routines takes only 19 instructions and no table:

http://www.dattalo.com/technical/software/pic/crc_8.asm

Since you're religiously opposed to assembly, this C source will save
your soul:

http://www.dattalo.com/technical/software/pic/crc_8bit.c

A good C-compiler should turn the crc_bits() function into about 19
instructions.

Scott
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