Are there other ways to implement a divide by a 14 constant other than
cycle-chewing subtraction loops?
I want to use the PIC16F flash consisting of 14-bit words to store 8-bit
data. I can implement the multiply-by-8 as a shift. The crux of the
problem is basically the divide by a constant of 14.
Pseudo Code ( actual code will likely be assembly )
wordOffset = 8*byteOffset / 14; // The integer result
wordBitOffset = 8*byteOffset % 14; // The remainder result
Patterns:
The 14-bit words and 8-bit data have a common multiple of 56.
The wordBitOffset pattern { 0,8,2,10,4,12,6 } repeats every 7-bytes.
I can't see a solution but it is an interesting puzzle.
Thanks in advance for any tips or suggestions,
-Ed
--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
