tomsoftware / dbopl

DBOPL - Typescript porting of DosBox Adlib OPL3 Emulator

OPL 3 Emulator

This is a Typescript-Port (not a cross compile) of the "dbopl.cpp"/"adlib.h",... Adlib OPL3 Emulator original written by "dosbox team"

Why

There are some cross compiled versions of the DOSBox OPL emulator using Emscripten Compiler Frontend (emcc) and WebAssembly. But, these cross compiled versions are big, slow and not easy to integrate into a TypScript application. So I decided to create a port of the C++ DOSBox OPL emulator to use it in my Lemmings.ts project. Cause of this some changes need to be made.

• replacing C++ templates by methods
• handling crazy address jumping
• fix type mismatch between c++ and Typescript

License of the original code written by "dosbox team"

GNU General Public License OPL emulator: Copyright 2002-2015 The DOSBox Team

DosBox

Test.js is used from

[opljs]https://github.com/Malvineous/opljs)

Run

open test.html

Use

	/// create emulator
    let opl = new DBOPL.OPL(audioCtx.sampleRate, 2);
	
	/// write register
	opl.write(reg, val);
	
	/// generate samples / wave
	let samples = opl.generate(sampelCount);

Deploy

you only need the alib.js file

License of this port

Cause the original is "GNU General Public License" this port is also "GNU General Public License"