dysp-d017

A C64 demo effect, as published on codebase64.

A D.Y.S.P. using $d017

A simple d.y.s.p. using $d017 to keep the timing in the side border-loop constant. I wrote this to get my old VIC-tricks up to speed again. It is most likely the first technique I used to do a d.y.s.p.

For an explanation of the code, look at the source, or read the article.

Assembling the code

The code can be assembled using 64tass: 64tass -C -a -o demo.prg main.asm. Or simple invoke make.

There's an additional target: make x64, which will assemble the code and then run VICE's x64 binary. Currently it only works on Unix-like systems.

SID tune

A tune by JCH is included, taken from the High Voltage SID Collection.