[Coco] Machine Code

[Steve Ostrom]

I had the fun experience of writing a machine language program, without the 
use of an assembler, to copy all the files from one SCSI drive to a second 
backup SCSI drive on my Coco3 set-up.  Cloud-9 had a BASIC program to do 
this, but I thought I could improve the speed by using ML.  The time savings 
was about 50%.  Not quite as good as I expected.  It even contained 
read/write error traps to make sure everything copied correctly.  I worked 
it out on paper sitting at a picnic table.  Calculating branches by hand was 
probably the most difficult, but it was a wonderful learning experience.  I 
then entered all the ML code as BASIC data statements.  I wish I could say 
it ran the first time, but it did take a few corrections.  Try doing that on 
any of today's computers!!  Not possible!

--- Steve ---


-----Original Message----- 
From: tim franklinlabs.com
Sent: Wednesday, May 31, 2017 12:36 PM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] Machine Code

   I'm curious what you consider "Machine Code"? Assembly and Machine Code
   are, for all practical purposes, the same thing. Machine Code by
   definition is the actual numbers put into RAM/ROM locations. I don't
   know anyone who actually writes in native machine code. They always use
   assemblers to create the machine code.
   As mentioned by another poster, it's best to start with EDTASM and a
   good Assemblers "How To" book.

     On May 31, 2017 at 11:53 AM John Mark Mobley
     <johnmarkmelanie at gmail.com> wrote:

     How do you practice simple machine code on a CoCo. This is just to
     teach
     the basics of machine code as an introduction to assembly.

     What steps should one follow to practise machine code.

     -John Mark Mobley

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References

   1. https://pairlist5.pair.net/mailman/listinfo/coco

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