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
General Purpose Author: Dmitry Kiryashov This code was originally located @ http://www.piclist.com
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; inc
incf count0,f
skpnz
incf count1,f
skpnz
incf count2,f
;... {repeat the last two lines for as wide a counter as is needed}
; w is unchanged.
; Status:Z is 1 if and only if counter is now all zeros.
; rest of Status unchanged.
;from Dmitry Kiryashov
;inc
movlw 1
addwf count0,F
skpnc
addwf count1,F
;... {ed: repeat the last two lines for as wide a counter as is needed}
; w is now 1
; Status:Z and Status:C are 1 if and only if counter is now all zeros.
;dec
movlw 1
subwf count0,F
skpc
subwf count1,F
;... {ed: repeat the last two lines for as wide a counter as is needed}
; w is now 1
; Status:C is now 0 if and only if counter rolled over and is now all ones
; Status:Z is set if the least significant byte of the counter is zero
; (not necessarily all bytes !) and in certain other cases. |
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