SX Code Collection

Here is some code converted from the PIC collection and some more SX specific routines.

Please send any questions or comments to golovchenko@mail.ru, or the PICList (with the topic tag [SX]: in the subject).

Routine Name	Size, instructions	Max timing, cycles	Temporary registers	Notes
Multiplication
24 by 24 bits	29	537	1
Division
8 by 8 bits to 24 bit floating point	41	449	1
16 by 8 bits with Q16.16 fixed point result	39	491	1
24 by 16 bits	28	632	3
32 by 16 bits using 16 by 16 bits with a 16 bit result	36	377	2/4
48 by 24 bits (and one using CARRYX option)	59/51	1558/1366	5
48 by 23 bits	52	1366	4
Divide 14 bit integer using a fixed point divisor and result (7Q8 format)	27	295	0
Square Root
24 bit floating point	85	438	6	IEEE<>Microchip format conversion
12 bit integer	32	124	3
8 bit	20	70	2
8 bit fast	29	31	1	See also a faster one for PICs
8 bit small	10	135	0
Routine Name	Size, instructions	Max timing, cycles	Temporary registers	Notes
CORDIC
Vector magnitude, 16 bits	147	~1700/850	4
Radix Conversion
16 bit binary to 5 digit decimal	73	251	0	strips a digit at a time
5 digit decimal to 16 bit binary	35	40	0
5 digit decimal (BCD) to 16 bit binary	23	358	1
Miscellaneous
8 bit random number generator	11	11	0	my version at the bottom
Delay exactly N cycles	-	-	0	scalable for any N size; at the bottom of the page
Wait for RTCC overflow with zero jitter	11	-	0	Used in main code for time critical apps; no prescaler
Test code detecting video horizontal sync using the built-in comparator and software PLL
Routine Name	Size, instructions	Max timing, cycles	Temporary registers	Notes

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