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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.
Because the code is copied to our servers, you should know that:

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We would personally like to send the credits to all the people that managed to write some very interesting code and publish it, and special thanx to the people that originally hosted those code snippets and gave us the permission to copy them.


View code
8 Bit Binary to 2 ASCII digits
Author: Sean H. Breheny
This code was originally located @ http://www.piclist.com


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movwf CHAR_HI ; Place W in CHAR_HI to store
swapf CHAR_HI,W ; Place CHAR_HI in W with most
; significant nibble in lower
; part of W
andlw 0x0F ; Clear upper part of W

addlw -10 ; Same as single digit, do conversion
btfsc STATUS,C
addlw 'A'-'0'-10
addlw '0'+10
; Swap W and CHAR_HI
xorwf CHAR_HI,F ; CHAR_HI = CHAR_HI xor W
xorwf CHAR_HI,W ; W = W xor CHAR_HI xor W
; = (W xor W) xor CHAR_HI
; = 0 xor CHAR_HI = CHAR_HI
xorwf CHAR_HI,F ; CHAR_HI = CHAR_HI xor W xor CHAR_HI
; = (CHAR_HI xor CHAR_HI) xor W
; = 0 xor W = W

andlw 0x0F ; Now we have original W back in W
; Clear upper part so we are left
; with original least significant
; nibble

addlw -10 ; Same as single digit, do conversion
btfsc STATUS,C
addlw 'A'-'0'-10
addlw '0'+10 ; We're done

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