Spacetime is a weird function sequencer.
This is a Famicom port of Study 3 for the Norns, written in 6502 assembly.
It plays a note on each step, ach step is a symbol for an action. It has 8 operators, I've added a snare hit to the random note operator for fun, and all operations wrap-around, since it only runs on 4 octaves.
./asm6 cart.asm cart.nes
The source is written for the asm6 assembler, in the Lin6 style.
14R02— Spacetime 6502 Release