MIDI Patterns - BUNDLE (384 303-Style Patterns by Anton Anru) , download!
Acid Patterns: How people are sharing a visual notation system for the Roland TB-303 to create and recreate acid house music | Organised Sound | Cambridge Core
Acid in your browser, free: generate acid patterns and MIDI with this Web tool - CDM Create Digital Music
Roland Cloud TB-303 Virtual Instrument | Gear4music
How to make an Acid House bassline - Attack Magazine