What is it?

YMU762 MegaMod is a retro Japanese and Korean flip phone music player that uses the original YMU762 chip and supports playing music in MMF and MID formats.

Why did you make it?

MA-3 is a synthesizer LSI for mobile phones that realize advanced game sounds.

This LSI has a built-in speaker amplifier, and thus, is an ideal device for outputting sounds that are used by mobile phones in addition to game sounds and ringing melodies that are replayed by a synthesizer.

The synthesizer section adopts “stereophonic hybrid synthesizer system” that are given advantages of both FM synthesizers and Wave Table synthesizers to allow simultaneous generation of up to thirty two FM voices and eight Wave Table voices.

Since FM synthesizer is able to present countless voices by specifying parameters with only several tens of bytes, memory capacity and communication band can be saved, and thus, the device exhibits the features in operating environment of mobile phones such as allowing distribution of arbitrary melodies with voices.

On the other hand, Wave Table synthesizer can pronounce the voice built in ROM and arbitrary ADPCM/PCM voices from sequencer by the download of the melody with voices etc..

MA-3 has a built-in hardware sequencer that helps to realize complex play without heavily loading the host CPU. The device also has a built-in circuit for controlling vibrators and LEDs synchronizing with play of music.

What makes it special?

MA-3 YMU752 MegaMod is the world's first self-made open source hardware that can independently play MMF format music. It can play retro mobile phone ringtones without a computer.
It supports directly playing MA2/3 SMAF mobile phone ringtones or MIDI files less than 127kb, and supports setting the number of playback loops.