Pseudo-assembly replica of the "memories" 256 byte demo

This is a project to study the mechanisms used in memories, a massively impressive 256 byte demo by Desire.

In such a tight size limit, being able to cram in 7 separate effects, a "script" to determine the sequence, a music player, and even make it visually appeasing is an incredible feat. But it also offered a great chance to study the internal mechanics of the x86 instruction set, so I created this project to start off with a safe playground on a modern machine and be able to play around with the instructions in a modern IDE without crashing an emulator instance.

The main.m file has a simple runloop that sets up a draw surface with TIGR. TIGR supports Mac and Windows, but the repo currently only has an xcode project. You can probably compile this for windows by just stuffing all the files in a VS project and hitting build.

mainloop.c contains the somewhat untouched assembly logic of the demo, converted into using fake CPU registers in C. Straight C has been used to implement the instructions where it seemed easy, and special functions mimicing the rest are in place for the rest.

All the original x86 assembly code with a really awesome writeup on each effect can be found at http://www.sizecoding.org/wiki/Memories

There's also a nice breakdown of some of the effects (with really cool visualizations too) at https://github.com/cesarmiquel/memories-256b-msdos-intro

This is considered a "fun" project so feel free to do whatever you like with any of the code.

• Music playback