Is there a quick way to divide a 16-bit number by 257 or does
it just look as though there should be ?

The Code Generator

http://www.piclist.com/techref/piclist/codegen/constdivmul.htm

seems to be unable to do this at 16 bits. I hoped it would produce
something that could be further optimised. All that's needed is
INT(16-bit / 257), the remainder can be found by * and - after the
division. I've tried a few simple shift/subtract ideas, and full 16-bit
division is still an option if necessary - just wondering if there's a
simple logical solution

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