Tornado Amiga Demo System

Tornado is an Amiga demo framework. It allows you to cross-develop and test code on both Amiga and Posix/SDL environments (currently MacOS X and GNU/Linux).

Introduction

Back in early 2017 several friends from the demo group Capsule decided to get back together and start coding on the Amiga again after a 20 year hiatus. It quickly became apparent that developing natively on the Amiga would not be efficient. Luis 'Peskanov' Pons had a very basic cross-compiler setup with Amiga and SDL targets that he had been using to test ideas, so I took the concept further and created a full framework that would take care of things such as file and memory management, hardware abstraction and instrumentation and debugging.

When this project started no other public frameworks existed but we took ideas from Michal ‘kiero’ Wozniak's Amiga demo making talk as well as noname's Modern Amiga Demo Cross-Development talk at Evoke 2018.

This framework was used to develop Renouncetro and Brutalism, two productions released at Revision 2018 and 2019 respectively.

If this sounds interesting you can take a look at the user manual and the examples.

Authors

Tornado was mainly developed by Miguel 'Flynn' Mendez with contributions from Luis 'Peskanov' Pons and Antonio 'winden' Vargas.

The music used in the p61 and DDPCM examples was composed by Carlos 'Estrayk' del Alamo.

The music used in the Pretracker example was composed by Jakub 'AceMan' Szelag and it's part of the Pretracker distribution.

The music used in the AHI example was composed by Miguel 'Flynn' Mendez.

The graphics used in the examples were created by Manuel 'Leunam' Sagall and Jordi Carlos 'God'.

It also makes use of the following third party software:

• Rocket: Used for synchronisation.
• SDL: Used to display the screen on the SDL/Posix target as well as serve as a backend for Dear ImGUI.
• SDL_Mixer: Used to play music on the SDL/Posix target.
• Dear ImGUI and ImGuiSDL: Used for the SDL/Posix UI and rocket controls.
• vbcc: Used to cross-compile Amiga code.
• Kalmalyzer: Michael Kalms' collection of c2p and audio routines.
• The Player 6.1: Mod replay routines.
• Pretracker by Pink/Abyss.
• AHI by Martin Blom.
• STB single-file public domain libraries for C/C++.

License

This software is released under the 2-Clause BSD License.