Re: A86: cphlde


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Re: A86: cphlde




yes, except that the carry flag can be used w/ the "jr" type
instructions whereas the sign flag cannot.

Dux Gregis wrote:
> 
> It doesn't matter what kind of numbers you're using: after you subtract,
> if de is greater than hl, the result is negative and the sign flag will
> be set.
> 
> Dan Eble wrote:
> >
> > On Mon, 4 May 1998, Dux Gregis wrote:
> >
> > > I disassembled _cphlde ($403c) to find out which flags are set.  I'm not
> > > sure how the carry flag is affected, but you can use the sign flag to
> > > check for inequalities:
> >
> > It works just like a normal cp.  If you're working with signed numbers,
> > use the sign flag.  If you're working with unsigned numbers, use the carry
> > flag.
> >
> > --------
> > Dan Eble (mailto:eble@cis.ohio-state.edu)
> >          (http://www.cis.ohio-state.edu/~eble)
> >
> > "Behold, how great a matter a little fire kindleth!" -- James 3:5

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=   Kirk Meyer (mailto:_@ibm.net)   =
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