Re: A86: More beginner questions

To: assembly-86@lists.ticalc.org
Subject: Re: A86: More beginner questions
From: Dux Gregis <assets@eden.rutgers.edu>
Date: Tue, 12 May 1998 00:25:44 -0400
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
References: <8c777408.3557b1e4@aol.com> <3557CE18.13F50CBF@eden.rutgers.edu>
Reply-To: assembly-86@lists.ticalc.org




Dux Gregis wrote:

> BIOSERRORS wrote:
>
> > As I said before, I'm still a beginner.  How do I add the mem address that HL
> > points to with the value in the accumulator, so that HL points to a new
> > address?
> >
> > Like this:
> > HL points to $9000
> > and A has the value 200
> > add them so that HL now points to $90C8
> >
> > ??
>
> 19 t-states with carry, 20 t-states without add a,h            ;4 t-states ld
> h,a                ;4 t-states
>  jr nc,skip            ;7 or 12 t-states
>  inc l                    ;4 t-states
> skip:

  That looked screwy, so here it is again:

   add a,h            ;4 t-states
   ld h,a                ;4 t-states
   jr nc,skip            ;7 or 12 t-states
   inc l                    ;4 t-states
skip:

Follow-Ups:

Re: A86: More beginner questions

From: Joshua Grams <j3grams@earthling.net>

References:

A86: More beginner questions

From: BIOSERRORS <BIOSERRORS@aol.com>

Re: A86: More beginner questions

From: Dux Gregis <assets@eden.rutgers.edu>