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[Core/Sound] fixed MAME YM2413 core operator output when EG is off (fixes issue #448)

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ekeeke 2022-08-07 10:13:10 +02:00
parent e2fd222349
commit 47d20265c9
4 changed files with 2 additions and 1 deletions
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core/sound/ym2413.c
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@ -39,6 +39,7 @@ to do:
/** 2021/05/04: improved EG increment steps accuracy (verified on YM2413 real hardware, cf. https://www.smspower.org/Development/YM2413ReverseEngineeringNotes2015-03-20) **/
/** 2021/05/08: improved EG transitions accuracy (verified against https://github.com/nukeykt/Nuked-OPLL/blob/master/opll.c) **/
/** 2021/05/11: improved EG attack phase algorithm accuracy (verified on YM2413 real hardware, cf. https://www.smspower.org/Development/YM2413ReverseEngineeringNotes2017-01-26) **/
/** 2022/08/07: fixed operator ouput when EG is off **/
/************************************************/
#include "shared.h"
@ -855,7 +856,7 @@ INLINE signed int op_calc1(UINT32 phase, unsigned int env, signed int pm, unsign
return tl_tab[p];
}
#define volume_calc(OP) ((OP)->TLL + ((UINT32)(OP)->volume) + (LFO_AM & (OP)->AMmask))
#define volume_calc(OP) (((OP)-> state != EG_OFF) ? (OP)->TLL + ((UINT32)(OP)->volume) + (LFO_AM & (OP)->AMmask) : ENV_QUIET)
/* calculate output */
INLINE void chan_calc( YM2413_OPLL_CH *CH )