GBVisualizer

GBVisualizer is a demonstration program for the Game Boy Color that utilizes two undocumented hardware registers (PCM12 and PCM34) to read the real-time PCM amplitude of the system's four audio channels. It visualizes this audio data in an oscilloscope-like manner, showcasing a unique waveform characteristic of the Game Boy's non-centered audio output.

Key Features

• Undocumented Register Access — Reads from the PCM12 (FF76) and PCM34 (FF77) registers to capture live audio amplitude data.
• Oscilloscope Visualization — Displays the audio waveform in real-time, similar to an oscilloscope, directly on the Game Boy Color screen.
• Game Boy Color Compatibility — Specifically designed and tested for the Game Boy Color hardware.
• Emulator Support — Compatible with the SameBoy emulator, which accurately emulates the required undocumented registers.

Philosophy

GBVisualizer serves as a technical demonstration and educational tool, exploring the hidden capabilities of the Game Boy Color's audio hardware to create a novel visual experience from audio signals.