An investigation into the behaviour of the Yamaha OPL3 chipset.
With a view to a more accurate emulator


Postby carbon14 » Mon Aug 09, 2010 10:56 am

For a while now I've been looking at OPL emulators. There's a few good ones around, used by MAME and DOSBox for example. But there are gaps in them. Some of them use samples for the percussion sounds for example.

Last year I came across this piece of work.

Then while figuring out how to build myself a logic analyser, I found this further piece of work by the same Olli Niemitalo.

So I have started to investigate the digital behaviour of the OPL3, with a view to uncovering exactly what an emulator should be doing.
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