> Wow!
> superb!!!
>
> mov #-1, r14
> rla r15
> adc r14
>
> Thanks!
> cheers,
> ~d
Is it ok to destroy r15? Because if not, this is going to be a problem...
How about:
mov #-1, r14
bit r15, #0x8000
adc r14
The bit instruction will set the carry just like the rla did, except it will
do so without changing r14.
mvh.
David
>
>
> On Thursday 30 January 2003 12:23, Matthias Weingart wrote:
> > On Thu, Jan 30, 2003 at 11:41:11AM +0300, Dmitry wrote:
> > > assume that some value is in r15.
> > > I need to extract a sign bit of r15 and extend it to whole word and
save
> > > thes in r14.
> > >
> > > Can anyone invent a simpler solution?
> >
> > I am not familiar with MSP ASM, but maybe you can
> >
> > mov #-1, r14
> > move msb of r15 to carry flag
> > add carry to r14
> >
> > no jump needed
> >
> > M.
> >
> >
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