Try the http://www.piclist.com code generator by Nikolai Golovchenko for Multiplication and Division by a constant.
See:
See also:
Archive:
Questions:
James Newton answers: Look at the math and logic section of the
instruction set for AND, OR (called IOR),
XOR, ADD, SUBtract, etc..
James Newton answers: See: http://www.piclist.com/techref/microchip/math/radix/index.htm for base conversion routines.
file: /Techref/microchip/math/basic.htm, 7KB, , updated: 2014/4/9 17:10, local time: 2015/4/21 20:43,

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