Jump to content
  • entries
  • comments
  • views

A Sound Understanding



I have spent a little time looking through some ATARI Assembly Language books for sound routines that I might find useful. I found several examples in ATARI Assembly Language Programmer's Guide by Allan Moose and Marian Lorenz.

Chapter 5, appropriately titled "Sound", has 3 programs that I wanted to hear. BOX 31 - Envelope, BOX 32 - Tremolo, and BOX 33 - Vibrato. These are BASIC examples using USR routines. The ml programs were listed in BOX31A, BOX32A, and BOX33A.

The first program was typed in and I got that "What the #@%!?" feeling when I typed RUN. It didn't work. As I was checking for my typos that feeling was slowly replaced with a DajaVue. I was back to "What the #@%!?" when I couldn't find a typo. I started feeling nostalgic about half way through trying to follow the ML logic and determining if it matched the DATA statements. Euphoria washed away several hours of frustration as I listened to the sound with an envelope.

Now I realized, it is the search for euphoria that is drawing me back to my Atari age of computing.

Spoiler Alert- If you too are looking for your euphoria then avoid downloading this ATR. It contains a working version of the BASIC programs with slight modifications and the USR routine source code in MAC/65 format.

SOUND Box 31-33a.atr


Recommended Comments

There are no comments to display.

Add a comment...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Create New...