How about a brute force approach ?

splittens
        movlw   255             ;setup at 1 below 0
        movwf   tens
        movf    number,w        ;copy original number
        movwf   units           ;into units
checktens
        incf    tens,f  ;=0 first time thru
        movlw   10
        subwf   units,f ;reduced by 10 until
        btfsc   status,c        ;below 0 or
        goto    adjustit
        btfsc   status,z        ;hits 0, get out,
        goto    checktens       ;or not, so try again
        goto    gotit
adjustit
        movlw   10              ;gone too low, so
        addwf   units,f ;fix up the units
gotit

itoa
        movlw   48              ;to convert the integers to ASCII
        addwf   tens,f  ;add the ASCII value for "0"
        addwf   units,f ;to the integers

bye.

-----Original Message-----
From: Nick Veys [mailto:nick@VEYS.COM]
Sent: Thursday, 26 July 2001 15:07
To: PICLIST@MITVMA.MIT.EDU
Subject: [PIC]: "itoa" routines? (16F870)


Hi all.  I'm in a bit of a tangle with some A/D input!  I've been
wrestling with a way to do this all night, which means I haven't thought
of anything new, and won't!  I have an 8bit number, only ranging 99 >= N
>= 0 so it will only be 2 digits.  I need to find a way to output it to
my LCD... I have tried subtract and compare methods but they're huge and
sloppy and I fear incorrect.  Has anyone tackled this?  My LCD output
function spits out what is in W, I would *like* an "itoa"-like function
that would break my 8-bit variable into 2 variables holding each digit,
so I can then spit it out, but I am at a loss on how to do this
effectively!  (btw: my 100-line jump table didn't work out so well
either! ;)

nick@veys.com | www.veys.com/nick

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