Commit Graph

15 Commits

Author SHA1 Message Date
ekeeke
47d20265c9 [Core/Sound] fixed MAME YM2413 core operator output when EG is off (fixes issue #448) 2022-08-07 10:13:10 +02:00
ekeeke
4a899e8262 [Core/Sound] fixed edge case in MAME YM2413 core when Key-Off occurs with envelope already off 2022-02-13 23:16:44 +01:00
ekeeke
e4c53348d9 [Core/Sound] fixed overflow bug in MAME YM2413 core when using attack rate 14.3 (introduced in previous commit) 2022-02-06 19:00:15 +01:00
ekeeke
1e0d2dad8f [Core/Sound] improved MAME YM2413 core EG attack phase algorithm accuracy (verified on YM2413 real hardware, cf. https://www.smspower.org/Development/YM2413ReverseEngineeringNotes2017-01-26) and EG increment table consistency 2021-05-12 19:07:12 +02:00
ekeeke
8acd9def6d [Core/Sound] improved MAME YM2413 EG transitions accuracy (verified against https://github.com/nukeykt/Nuked-OPLL/blob/master/opll.c) 2021-05-09 09:52:44 +02:00
ekeeke
536ff47457 [Core/Sound] fixed MAME YM2413 core EG updates being 2x faster after EG resolution change and improved EG increment steps accuracy (verified on YM2413 real hardware, cf. https://www.smspower.org/Development/YM2413ReverseEngineeringNotes2015-03-20) 2021-05-07 12:58:02 +02:00
ekeeke
4950d2f042 [Core/Sound] improved MAME YM2413 core EG sustain phase transition comparator accuracy (verified on YM2413 real hardware, cf. https://www.smspower.org/Development/YM2413ReverseEngineeringNotes2015-12-31) 2021-04-24 11:08:49 +02:00
ekeeke
1a1c2a1e63 [Core/Sound] fixed MAME YM2413 core EG behavior when SL = 0 (verified on YM2413 real hardware, cf. https://www.smspower.org/Development/YM2413ReverseEngineeringNotes2015-12-24) 2021-04-24 10:47:25 +02:00
ekeeke
ca484e9c56 [Core/Sound] fixed MAME YM2413 core EG behavior for fastest attack rates (verified on YM2413 real hardware, cf. https://www.smspower.org/Development/YM2413ReverseEngineeringNotes2017-01-26) 2021-04-24 10:27:59 +02:00
ekeeke
4feeb7d02e [Core/Sound] fixed MAME YM2413 core EG "dump" rate (verified on YM2413 real hardware, cf. https://www.smspower.org/Development/YM2413ReverseEngineeringNotes2015-12-31) 2021-04-23 16:21:04 +02:00
ekeeke
de47d1db56 [Core/Sound] fixed MAME YM2413 core EG resolution bits (verified on YM2413B die, cf. https://www.smspower.org/Development/YM2413ReverseEngineeringNotes2015-03-20) 2021-04-23 15:41:33 +02:00
ekeeke
dfeaeba925 [Core/Sound] fixed MAME YM2413 core instruments ROM (verified on YM2413B die, cf. https://siliconpr0n.org/archive/doku.php?id=vendor:yamaha:opl2#ym2413_instrument_rom) 2021-04-23 11:48:21 +02:00
ekeeke
305f89489e [Core/Sound] fixed carrier/modulator phase reset after channel Key ON in MAME YM2413 core 2021-04-23 01:27:50 +02:00
EkeEke
d08b903a11 [Core/MS] improved emulation of Japanese Master System I/O chip (315-5297) 2014-11-23 20:30:27 +01:00
EkeEke
aede1b9299 rearranged core & back-end specific code (part 2) 2013-06-17 22:31:31 +02:00