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100% damifortune

::|CONTENTS

1. Tools
2. Restrictions on submit
3. Playback (for voting)
4. See also

OPL2 is BotB's format specifically for the AdLib soundchip Yamaha YM3812 (aka OPL2), found on AdLib and Sound Blaster PC soundcards between the mid 1980s through early 1990s. It features nine channels of two-operator FM synthesis, notably with three additional waveform variations beyond a pure sine wave.

This format was created in late 2024 as an answer to a long-standing BotB conundrum about the AdLib Soundcard format. The AdLib format was retired from hosting and replaced by two new formats, OPL2 and OPL3. (OPL3 is functionally identical to the old AdLib format, because OPL2 music can be created within the confines of OPL3 as well.)

Tools

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- Adlib Tracker II (Windows, DOS) (*.a2m)
- AMusic v1.12 (*.amd)
- Reality Adlib Tracker (Windows, DOS) (*.rad)
- Faust Music Creator (DOS) (*.fmc)
- Scream Tracker 3 (DOS) (*.s3m)
- Schism Tracker (Windows, Linux, OS X, BSD) (*.s3m)
- MODPlug Tracker (Windows) (*.s3m, *.mptm)
- Furnace Tracker (Windows, Linux, Mac) (*.fur)

Scream Tracker 3 modules (*.s3m) are ordinarily sample-based, but the format also supports OPL FM instruments. Modules that use OPL instruments exclusively are fair game for submission. THAT MEANS NO SAMPLES. The same goes for MPT modules (*.mptm).

Schism Tracker: To create an OPL instrument go to the samples list and press Alt-Z. The documentation for Schism Tracker's AdLib instrument creation can be found here

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Furnace Tracker: Select only one (1) chip from one of these two options: "YM3812 (OPL2)" or "YM3812 (OPl2) drums mode".

Restrictions on submit

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The entry must be written for the AdLib soundcard's OPL2 chip (YM3812) and should be playable on hardware or in an emulator.

Make sure to only use the following waveform options if your tool allows for others: sine, half sine, absolute sine, and quarter sine. The other four are exclusive to the OPL3.

Many filetypes are accepted, including .a2m, .amd, .rad, .fmc, .s3m, .mptm, and .fur. These modules are either playable on hardware or have a path to hardware playability via .vgm export. The modules are still preferred to match the rest of the file formats.

Playback (for voting)

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Use one of the tools mentioned above! Or one of these alternatives:
- Droidsound-E (Enhanced version) (Android)
- XMplay/winamp plug-in available here

See also

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- adlib (soundchip)
- adlib (soundcard)
- adlib (format) (retired format; precursor to the separate OPL2 and OPL3 formats)