I've found a square root function in the archives, but I don't
understand the code as written, and neither does my assembler! Here's
a sample:

        clrf ACCaHI,f ;
        clrf ACCaLO,f ;

        clrf ACCcHI,f ;
        clrf ACCbLO,w ;

I understand the "clrf" followed by a register, but what's the ",f"
and ",w" mean? The Microchip data sheets don't show this.

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.