[Core/Sound] added accurate YM2612 status & BUSY flag emulation for M…

…AME core (verified on discrete and ASIC-integrated chips)
ekeeke · Jan 7, 2018 · fee2bc8 · fee2bc8 · ekeeke · Jan 7, 2018
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diff --git a/HISTORY.txt b/HISTORY.txt
@@ -121,7 +121,10 @@ Genesis Plus GX 1.7.5 (xx/xx/xxxx) (Eke-Eke)
 
 [Core/Sound]
 ---------------
-* added discrete YM2612 DAC distortion emulation (optional)
+* replaced configurable YM2612 DAC quantization by configurable YM2612 chip model emulation (discrete, ASIC-integrated or enhanced)
+* added DAC distortion emulation for discrete YM2612 chip model
+* added accurate status & BUSY flag emulation for discrete and ASIC-integrated YM2612 chip models (verified on real hardware)
+* improved 9-bit DAC quantization accuracy for discrete and ASIC-integrated YM2612 chip models (verified on YM2612 die)
 * rewrote optimized & more accurate PSG core from scratch
 * removed PSG boost noise feature & added optional high-quality PSG resampling
 * fixed YM2612 self-feedback regression introduced in 1.7.1

diff --git a/builds/genesis_plus_gx_libretro.dll b/builds/genesis_plus_gx_libretro.dll
diff --git a/builds/genplus_cube.dol b/builds/genplus_cube.dol
diff --git a/builds/genplus_wii.dol b/builds/genplus_wii.dol