Re: A86: a question

To: assembly-86@lists.ticalc.org
Subject: Re: A86: a question
From: Dux Gregis <assets@eden.rutgers.edu>
Date: Wed, 15 Apr 1998 23:56:25 -0400
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
References: <3.0.5.32.19980416003339.00834aa0@mail.acc.umu.se> <19980415.223931.9471.3.UNIBOMER@juno.com>
Reply-To: assembly-86@lists.ticalc.org


The whole reason I was using ix was to keep it a constant...  this method is
nice, thanks.Btw, both methods are seven bytes.

> That's the first way I thought of (57 T states), but a second method that
> might work is:
>
> push ix       ; 15 T states
> pop de        ; 10 T states
> add hl,de     ; 11 T states
> ld e,(hl)     ; 7  T states
> inc hl        ; 6  T states
> ld d,(hl)     ; 7  T states
> ---------------------------
>               ; 56 T states
>
> It may be a little larger, but if you call it (or whatever) very often
> then the 1 less T state could add up quickly and outweigh the extra
> space.  Also this method doesn't destroy ix.  It does destroy hl, but to
> preserve the input data "push hl...pop hl" is 8 T states less than "push
> ix...pop ix" (therefore still the faster method:-).
>
> Sincerely,
> The Unibomer
>
> Jared Ivey
> Unibomer@Juno.com
> http://www.geocities.com/SiliconValley/Vista/7342
>
> "Do not use a hatchet to remove a fly from your friend's forehead." --
> Chinese Proverb
>
> _____________________________________________________________________
> You don't need to buy Internet access to use free Internet e-mail.
> Get completely free e-mail from Juno at http://www.juno.com
> Or call Juno at (800) 654-JUNO [654-5866]

References:

Re: A86: a question

From: Jimmy =?iso-8859-1?Q?M=E5rdell?= <yarin@acc.umu.se>

Re: A86: a question

From: unibomer@juno.com (Jared Ivey)