All about PIC microcontrollers
Within these pages, you can find many useful pieces of code mostly in assembly for the Microchip PIC micro controller family. A lot of people have spend many hours trying to put the bits and bytes together. If the code is NOT written by a member of the PCB Heaven community, then a link will be added above the code with the original website that this code was found.
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View code
8 bit Author: Nikolai Golovchenko This code was originally located @ http://www.piclist.com
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;**********************************************************************
;by Nikolai Golovchenko
;8 bit SQARE ROOT
;ACCB0 input/output
;TEMPB0, TEMPB1 used for temporary storage
;66 cycles execution time
;20 words of program memory
;3 bytes of RAM
;**********************************************************************
Sqrt8
movlw 0x40
movwf TEMPB1
clrf TEMPB0
sqrt8a
movf TEMPB1, w
iorwf TEMPB0, w
subwf ACCB0, w
btfsc _C
movwf ACCB0
rrf TEMPB0, f
movf TEMPB1, w
btfsc TEMPB0, 7
iorwf TEMPB0, f
bcf TEMPB0, 7
rrf TEMPB1, f
rrf TEMPB1, f
btfss TEMPB1, 7
goto sqrt8a
movf TEMPB0, w
movwf ACCB0
return
;********************************************************************** |
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