A92: function template

To: assembly-92@lists.ticalc.org
Subject: A92: function template
From: gil.guillory@mwk.com
Date: Thu, 4 Sep 1997 8:24:32 -0600
Reply-To: assembly-92@lists.ticalc.org

     
     Being a bit lazy, and not altogether interested in learning all the 
     details of assembly on the 68000, I'm looking for advice and perhaps a 
     go-by to work with.
     
     I have developed a series of functions on my TI-92 (in TI-basic) that 
     calculate various thermodynamic properties of steam and water. The 
     only problem I have is computation time. Most of the interesting and 
     useful calculations take several seconds.
     
     I am hoping to be able to code some of the core functions (maybe all 
     of them) in assembler, but I have not yet found how to return a value 
     across the Fargo veil.
     
     My questions:
     
     1. Is it possible to write functions in assembler?
     
     2. Is it likely that doing so would increase the speed of the 
     computations? Note that I use a good deal of loops and constants. 
     Also, how would functions calling functions affect the speed?
     
     3. How should I do the calculations? What are the 
     advantages/disadvantages of using floating-point vs. BCD ?
     
     4. If the answers to 1 & 2 above are yes, does anyone have (or would 
     some kind soul construct for me) a template that I could use to do 
     some simple assembly programming? Note that I intend to submit my 
     final version to the ticalc.org site and you will get an author's 
     mention for any substantial help you provide.
     
     -gil

MSGCC.RTF

Follow-Ups:

Re: A92: function template

From: Shawn Walker <swalker@joe.math.uga.edu>