[A83] Re: The Working Of Floating Point Numbers
[Prev][Next][Index][Thread]
[A83] Re: The Working Of Floating Point Numbers
From: "Patai Gergely" <patai.ti@freemail.hu>
> > Isn't it "Decimal Adjust *Accumulator*" ?
> >
>
> Well, you caught me! :)
>
> In fact, DAA (the very same instruction) is called "DA
> after Addition" in x86 assembly (I dare to say this on the
> basis of the book I learnt assembly programming from). I'm
> actually not sure about the proper name in the case of the
> Z80, but it doesn't have much significance anyway...
DAA has a different output after subtraction instructions. For a
complete explanation of the instruction (and all other except
undocumented), take a look at the official z80 user manual. It
explains evey instruction quite well actually.
Follow-Ups:
References: