HGR Demo2

2nd place 1k demo at Demosplash 2021.
By -=DEsIRE=-: code by deater, music by mAZE.

A few hi-res scenes on an Apple II. The more interesting part here is the Mockingboard music, which is hard to do on a size constrained demo (for comparison, on my full size demos the PT3 tracker/player plus music is usually at least 4k).


Recorded on actual Apple IIe Platinum. Trying out a retrotink 2 for the capture this time. Still having some trouble with the sound quality.

System Requirements

More info

The music is in a custom mini-tracker. I didn't have time to super-optimize it. It supports 3 channels of square waves, a fixed volume, and 4 octaves of notes. mAZE had a much nicer longer version of the song but I ran into size constraints so it's just a short excerpt. It generates the 4 octaves of frequency values at startup to save room, though it's tricky as octaves below 3 you need 16-bit math to calculate properly.

Some notes on the various parts:

Frequently Asked Questions

Sourcecode and Disk Image

You can get the disk image here: hgr_d2.dsk (140k), 14 November 2021

You can get the sourcecode here in the demos/d2 directory of my dos33fsprogs github repository:
git clone https://github.com/deater/dos33fsprogs/
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