1st place retro-demo at Demosplash 2020.
By -=DEsIRE=-: code by deater, music by mAZE.
Only 8kB in size thanks to lzsa decompression by Emmanuel Marty.
A bunch of Applesoft BASIC demos that fit in 280-byte tweets.
First tested on
Kay Savetz's @appleiibot.
You can get the sourcecode
here in the demos/bot_demo directory of
my dos33fsprogs github repository: git clone https://github.com/deater/dos33fsprogs/Vote for this at Pouet
More info
For info on what's going on in the Applesoft BASIC programs
see this page which explores them in more
detail.
The demo is playing Mockingboard AY-3-8910 chiptune music in the
background using my PT3 player
The demo is controlled from the interrupt handler.
It won't work unless you have a Mockingboard to generate
timer interrupts.
The demo contains the BASIC programs and copies them to
$800 at the right time. It runs LIST on them by putting LIST
into the input buffer and jumping to the BASIC entry point.
It does RUN in a similar way.
To stop the program, the interrupt handler comes in after a set number
of seconds. It then forces a faked up return from the interrupt
handler away from the running program and back into our code
that lives up at $6000.
The code assumes you have an Apple IIe, as the applebot emulates
a IIe and some of the demos are Double-Hi-Res which is only
available on IIe and newer systems.
