Re: A86: RST 10

To: assembly-86@lists.ticalc.org
Subject: Re: A86: RST 10
From: Steve86Asm@aol.com
Date: Tue, 23 Sep 1997 16:13:25 -0400 (EDT)
Reply-To: assembly-86@lists.ticalc.org

In a message dated 97-09-23 15:19:40 EDT, you write:

> 
>  can someone tell me how to use RST commands and what exactly they're used
>  for? sorry this is proably basic stuff to ya'll.  all i know about them is
>  that they're used to find things in memory right?
>  
>  thanx,
>  Patrick
>  
>  

Restarts are used to call locations in ROM that are called commonly.  RST 20h
and RST 10h both deal with finding variables.  I believe 00h has something to
do with formatting the calc, or maybe a self test.  Anyway, they go all the
way from 00h to 40h in increments of 8h. (00h,08h,10h,18h, etc).  I think
they actually call that address in rom but are faster or more efficient or
something. (someone correct me if I'm wrong)  Once I get my Z80 books (if
_ever_) then I can tell you more about it... :-(

~Stephen Hicks

Follow-Ups:

Re: A86: RST 10

From: Alan Bailey <bailela@charlie.cns.iit.edu>