Usually, one instrument definition takes up (or sometimes packed into fewer bytes depending on the specific tracker format, like MoonBlaster).
The YM2413 was labeled "Low Cost" for a reason. Unlike full FM chips that allowed programmers to tweak every parameter of a sound wave, the YM2413 was more rigid. It offered: ym2413+instrumentsbin
18;write_to_target_document7;default0;b5d;18;write_to_target_document1a;_xGXuaaOtCcegnesPkNGBqAY_20;bcf; 0;4f8;0;868; Usually, one instrument definition takes up (or sometimes
00 00 00 00 00 0F 0F F0
The data contained in that .bin file defines the 15 instruments that every game developer in the 80s had to use 0;17;: : Violin, Cello, Flute, Clarinet. Keyboards : Piano, Organ, Harpsichord.0;545; Guitars : Acoustic Guitar, Electric Guitar. Synthesizers : Synth Brass, Synth Guitar, Synth Bass. Exotics0;76; : Marimba, Vibraphone, Tuba. 0;1f61;0;a0d; : : Violin