Ym2413+instrumentsbin May 2026

On the MSX computer scene, music trackers like MoonBlaster often used .MBM files. These files used a generic "instruments" definition file. If you are trying to play old MSX music, you might find a file named instruments.bnk or similar.

A standard YM2413 instrument is defined by a set of specific parameters stored in these binary files: ym2413+instrumentsbin

The instruments.bin file is essentially a lookup table. When a song file (like .MUS or .VGM) calls for "Instrument 17" (the custom slot), the player software reads the corresponding bytes from instruments.bin and writes them to the YM2413’s registers. On the MSX computer scene, music trackers like

Even with the correct ym2413_instruments.bin, things can go wrong. The instruments

Error 1: "Failed to load OPLL custom instrument file"

Error 2: Sound works but pitch is broken

Error 3: Rhythm channels make no sound