I tried to fix it using 18F compares instructions and I didn't like
of the result. I will continue using like a 16F series that has worked.

See below:

RAM >=3D X                RAM <=3D X
movlw XL                movf RAML,W
subwf RAML,W            sublw XL
movlw XH                movf RAMH,W
btfss STATUS,C          btfss STATUS,C
addlw 1                 addlw 1
subwf RAMH,W            sublw XH
btfsc STATUS,C          btfsc STATUS,C
bra TRUE                bra TRUE

I thought that would spend less codes using the 18F instructions to make
it in a 16bit number.

Luis F.



>
> Thanks Jan-Erik
> You are right, I=B4ve got it using the 18F compare instructions.
> I did a mistake, because I=B4ve been using to 16F series.
> I also tried to do this using subtract with borrow instruction, but
> I could not make it work.
>
> Best Regards
>
> Luis F.
>
>
>
>> antoniasse wrote :
>>
>>
>>> Subject: [PIC]:18F compare routines
>>
>> Why not simply use the 18F compare *instructions* ?
>>
>> Note that in most cases it's enough to compare
>> the high bytes of the 16 bit numbers, only if they
>> are equal you have to compare the low bytes.
>> Depending on which of the operations you are
>> doing, of course.
>>
>> Jan-Erik.
>>
>>
>>
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