Player for Yamaha YM chip tunes.
From Anton Javorček:
For a long time I could not get any more detailed descriptions of the YM formats, especially the older versions but I thought since YM2, YM3 and YM3B do not support samples and special effects they could easily be played on Sam's SAA1099.
Well it was not that simple either. Without support for envelopes - it was working pretty well, but implementing the envelope support was tricky especially when I did not know exactly how it works in the SAA. After a few experiments and mistakes, studying the datasheets and persevering it is finally here.
When it was working pretty well, I got hold of StSound's source code and although I already knew that the DigiDrum samples can be used in YM2 files (I had the samples) I'd have to rework the whole thing to support samples and that will take some time, so the attached version is lacking support for samples and special effects.
Files with valid headers for YM2, YM3, YM3b, YM4, YM5, and YM6 formats are supported (even YM1, but it does not exist, I just assumed it.)
Note: There are two YM files that are not supported on the attached disk which are in formats MIX1 and YMT, see the following page for details.
YM files are supported for loading in both unpacked or packed (using LHArc) formats.
Version 2 fixes several bugs around the envelope.
