Carole To wrote:
>=20
> [PIC]:Hi , I'd like to make an operation on a 16-bit data (like an =
addwf)in
> assembler
> I was wondering if this could be possible since the registers in th=
e 16c717
> are 8-bit wide.
> So my question is : how can I make an operation on a 16-bit data( w=
ith the
> MSB and LSB) and then separate the 8 MSB datas and the 8 LSB datas =
so that I
> can store them in the SSPBUF register on the I=B2C bus?
> Thanks
>=20


=09movf ByteL,W=09=09; low byte of 16 bit value
=09addwf ResultL=09=09; add it to low result
=09btfsc STATUS,C=09=09; increment high result if carry set
=09incf ResultH

=09movf ByteH,W=09=09; high byte of 16 but value
=09addwf ResultH=09=09; add it to high result


=09movf ResultH,W=09=09; send high result
=09call SendToI2C
=09movf ResultL,W=09=09; send low result
=09call SendToI2C


--=20
Best regards

Tony

mICros
http://www.bubblesoftonline.com
mailto:sales@bubblesoftonline.com

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