diff options
Diffstat (limited to 'sound/fmopl.cpp')
| -rw-r--r-- | sound/fmopl.cpp | 2926 |
1 files changed, 807 insertions, 2119 deletions
diff --git a/sound/fmopl.cpp b/sound/fmopl.cpp index 549c4609b1..ef25721767 100644 --- a/sound/fmopl.cpp +++ b/sound/fmopl.cpp @@ -1,286 +1,101 @@ -/* -** -** File: fmopl.c - software implementation of FM sound generator -** types OPL and OPL2 -** -** Copyright (C) 1999,2000 Tatsuyuki Satoh , MultiArcadeMachineEmulator development -** Copyright (C) 2002 Jarek Burczynski -** -** Version 0.60 -** - -Revision History: - -04-28-2002 Jarek Burczynski: - - binary exact Envelope Generator (verified on real YM3812); - compared to YM2151: the EG clock is equal to internal_clock, - rates are 2 times slower and volume resolution is one bit less - - modified interface functions (they no longer return pointer - - that's internal to the emulator now): - - new wrapper functions for OPLCreate: YM3526Init(), YM3812Init() and Y8950Init() - - corrected 'off by one' error in feedback calculations (when feedback is off) - - enabled waveform usage (credit goes to Vlad Romascanu and zazzal22) - - speeded up noise generator calculations (Nicola Salmoria) - -03-24-2002 Jarek Burczynski (thanks to Dox for the YM3812 chip) - Complete rewrite (all verified on real YM3812): - - corrected sin_tab and tl_tab data - - corrected operator output calculations - - corrected waveform_select_enable register; - simply: ignore all writes to waveform_select register when - waveform_select_enable == 0 and do not change the waveform previously selected. - - corrected KSR handling - - corrected Envelope Generator: attack shape, Sustain mode and - Percussive/Non-percussive modes handling - - Envelope Generator rates are two times slower now - - LFO amplitude (tremolo) and phase modulation (vibrato) - - rhythm sounds phase generation - - white noise generator (big thanks to Olivier Galibert for mentioning Berlekamp-Massey algorithm) - - corrected key on/off handling (the 'key' signal is ORed from three sources: FM, rhythm and CSM) - - funky details (like ignoring output of operator 1 in BD rhythm sound when connect == 1) - -12-28-2001 Acho A. Tang - - reflected Delta-T EOS status on Y8950 status port. - - fixed subscription range of attack/decay tables - - - To do: - add delay before key off in CSM mode (see CSMKeyControll) - verify volume of the FM part on the Y8950 -*/ +/* ScummVM - Scumm Interpreter + * Copyright (C) 1999-2000 Tatsuyuki Satoh + * Copyright (C) 2001-2003 The ScummVM project + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * $Header$ + * + * LGPL licensed version of MAMEs fmopl (V0.37a modified) by + * Tatsuyuki Satoh. Included from LGPL'ed AdPlug. + */ #include "stdafx.h" -#include "scummsys.h" + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdarg.h> #include <math.h> + #include "fmopl.h" +#include "common/engine.h" // for warning/error/debug + #ifndef PI #define PI 3.14159265358979323846 #endif -#ifdef _MSC_VER -# define INLINE __inline -#elif defined(__GNUC__) -# define INLINE inline -#else -# define INLINE -#endif +/* -------------------- preliminary define section --------------------- */ +/* attack/decay rate time rate */ +#define OPL_ARRATE 141280 /* RATE 4 = 2826.24ms @ 3.6MHz */ +#define OPL_DRRATE 1956000 /* RATE 4 = 39280.64ms @ 3.6MHz */ -/* output final shift */ -#if (OPL_SAMPLE_BITS==16) - #define FINAL_SH (0) - #define MAXOUT (+32767) - #define MINOUT (-32768) -#else - #define FINAL_SH (8) - #define MAXOUT (+127) - #define MINOUT (-128) -#endif +#define FREQ_BITS 24 /* frequency turn */ + +/* counter bits = 20 , octerve 7 */ +#define FREQ_RATE (1<<(FREQ_BITS-20)) +#define TL_BITS (FREQ_BITS+2) +/* final output shift , limit minimum and maximum */ +#define OPL_OUTSB (TL_BITS+3-16) /* OPL output final shift 16bit */ +#define OPL_MAXOUT (0x7fff<<OPL_OUTSB) +#define OPL_MINOUT (-0x8000<<OPL_OUTSB) -#define FREQ_SH 16 /* 16.16 fixed point (frequency calculations) */ -#define EG_SH 16 /* 16.16 fixed point (EG timing) */ -#define LFO_SH 24 /* 8.24 fixed point (LFO calculations) */ -#define TIMER_SH 16 /* 16.16 fixed point (timers calculations) */ +/* -------------------- quality selection --------------------- */ -#define FREQ_MASK ((1<<FREQ_SH)-1) +/* sinwave entries */ +/* used static memory = SIN_ENT * 4 (byte) */ +#define SIN_ENT 2048 +/* output level entries (envelope,sinwave) */ +/* envelope counter lower bits */ +int ENV_BITS; /* envelope output entries */ -static const int ENV_BITS = 10; -static const int ENV_LEN = 1<<ENV_BITS; -static const float ENV_STEP = 128.f/ENV_LEN; +int EG_ENT; -#define MAX_ATT_INDEX ((1<<(ENV_BITS-1))-1) /*511*/ -#define MIN_ATT_INDEX (0) +/* used dynamic memory = EG_ENT*4*4(byte)or EG_ENT*6*4(byte) */ +/* used static memory = EG_ENT*4 (byte) */ +int EG_OFF; /* OFF */ +int EG_DED; +int EG_DST; /* DECAY START */ +int EG_AED; +#define EG_AST 0 /* ATTACK START */ -/* sinwave entries */ -#define SIN_BITS 10 -#define SIN_LEN (1<<SIN_BITS) -#define SIN_MASK (SIN_LEN-1) +#define EG_STEP (96.0/EG_ENT) /* OPL is 0.1875 dB step */ -#define TL_RES_LEN (256) /* 8 bits addressing (real chip) */ +/* LFO table entries */ +#define VIB_ENT 512 +#define VIB_SHIFT (32-9) +#define AMS_ENT 512 +#define AMS_SHIFT (32-9) +#define VIB_RATE 256 +/* -------------------- local defines , macros --------------------- */ /* register number to channel number , slot offset */ #define SLOT1 0 #define SLOT2 1 -/* Envelope Generator phases */ - -#define EG_ATT 4 -#define EG_DEC 3 -#define EG_SUS 2 -#define EG_REL 1 -#define EG_OFF 0 - - -/* save output as raw 16-bit sample */ - -/*#define SAVE_SAMPLE*/ - -#ifdef SAVE_SAMPLE -static FILE *sample[1]; - #if 1 /*save to MONO file */ - #define SAVE_ALL_CHANNELS \ - { signed int pom = lt; \ - fputc((unsigned short)pom&0xff,sample[0]); \ - fputc(((unsigned short)pom>>8)&0xff,sample[0]); \ - } - #else /*save to STEREO file */ - #define SAVE_ALL_CHANNELS \ - { signed int pom = lt; \ - fputc((unsigned short)pom&0xff,sample[0]); \ - fputc(((unsigned short)pom>>8)&0xff,sample[0]); \ - pom = rt; \ - fputc((unsigned short)pom&0xff,sample[0]); \ - fputc(((unsigned short)pom>>8)&0xff,sample[0]); \ - } - #endif -#endif - -/* #define LOG_CYM_FILE */ -#ifdef LOG_CYM_FILE - FILE * cymfile = NULL; -#endif - - - -#define OPL_TYPE_WAVESEL 0x01 /* waveform select */ -#define OPL_TYPE_ADPCM 0x02 /* DELTA-T ADPCM unit */ -#define OPL_TYPE_KEYBOARD 0x04 /* keyboard interface */ -#define OPL_TYPE_IO 0x08 /* I/O port */ - -/* ---------- Generic interface section ---------- */ -#define OPL_TYPE_YM3526 (0) -#define OPL_TYPE_YM3812 (OPL_TYPE_WAVESEL) -#define OPL_TYPE_Y8950 (OPL_TYPE_ADPCM|OPL_TYPE_KEYBOARD|OPL_TYPE_IO) - - - -/* Saving is necessary for member of the 'R' mark for suspend/resume */ - -typedef struct{ - UINT32 ar; /* attack rate: AR<<2 */ - UINT32 dr; /* decay rate: DR<<2 */ - UINT32 rr; /* release rate:RR<<2 */ - UINT8 KSR; /* key scale rate */ - UINT8 ksl; /* keyscale level */ - UINT8 ksr; /* key scale rate: kcode>>KSR */ - UINT8 mul; /* multiple: mul_tab[ML] */ - - /* Phase Generator */ - UINT32 Cnt; /* frequency counter */ - UINT32 Incr; /* frequency counter step */ - UINT8 FB; /* feedback shift value */ - INT32 *connect1; /* slot1 output pointer */ - INT32 op1_out[2]; /* slot1 output for feedback */ - UINT8 CON; /* connection (algorithm) type */ - - /* Envelope Generator */ - UINT8 eg_type; /* percussive/non-percussive mode */ - UINT8 state; /* phase type */ - UINT32 TL; /* total level: TL << 2 */ - INT32 TLL; /* adjusted now TL */ - INT32 volume; /* envelope counter */ - UINT32 sl; /* sustain level: sl_tab[SL] */ - - UINT8 eg_sh_ar; /* (attack state) */ - UINT8 eg_sel_ar; /* (attack state) */ - UINT8 eg_sh_dr; /* (decay state) */ - UINT8 eg_sel_dr; /* (decay state) */ - UINT8 eg_sh_rr; /* (release state) */ - UINT8 eg_sel_rr; /* (release state) */ - - UINT32 key; /* 0 = KEY OFF, >0 = KEY ON */ - - /* LFO */ - UINT32 AMmask; /* LFO Amplitude Modulation enable mask */ - UINT8 vib; /* LFO Phase Modulation enable flag (active high)*/ - - /* waveform select */ - unsigned int wavetable; -} OPL_SLOT; - -typedef struct{ - OPL_SLOT SLOT[2]; - /* phase generator state */ - UINT32 block_fnum; /* block+fnum */ - UINT32 fc; /* Freq. Increment base */ - UINT32 ksl_base; /* KeyScaleLevel Base step */ - UINT8 kcode; /* key code (for key scaling) */ -} OPL_CH; - -/* OPL state */ -typedef struct fm_opl_f { - /* FM channel slots */ - OPL_CH P_CH[9]; /* OPL/OPL2 chips have 9 channels*/ - - UINT32 eg_cnt; /* global envelope generator counter */ - UINT32 eg_timer; /* global envelope generator counter works at frequency = chipclock/72 */ - UINT32 eg_timer_add; /* step of eg_timer */ - UINT32 eg_timer_overflow; /* envelope generator timer overlfows every 1 sample (on real chip) */ - - UINT8 rhythm; /* Rhythm mode */ - - UINT32 fn_tab[1024]; /* fnumber->increment counter */ - - /* LFO */ - UINT8 lfo_am_depth; - UINT8 lfo_pm_depth_range; - UINT32 lfo_am_cnt; - UINT32 lfo_am_inc; - UINT32 lfo_pm_cnt; - UINT32 lfo_pm_inc; - - UINT32 noise_rng; /* 23 bit noise shift register */ - UINT32 noise_p; /* current noise 'phase' */ - UINT32 noise_f; /* current noise period */ - - UINT8 wavesel; /* waveform select enable flag */ - - int T[2]; /* timer counters */ - UINT8 st[2]; /* timer enable */ - -#if BUILD_Y8950 - /* Delta-T ADPCM unit (Y8950) */ - - YM_DELTAT *deltat; - - /* Keyboard / I/O interface unit*/ - UINT8 portDirection; - UINT8 portLatch; - OPL_PORTHANDLER_R porthandler_r; - OPL_PORTHANDLER_W porthandler_w; - int port_param; - OPL_PORTHANDLER_R keyboardhandler_r; - OPL_PORTHANDLER_W keyboardhandler_w; - int keyboard_param; -#endif - - /* external event callback handlers */ - OPL_TIMERHANDLER TimerHandler; /* TIMER handler */ - int TimerParam; /* TIMER parameter */ - OPL_IRQHANDLER IRQHandler; /* IRQ handler */ - int IRQParam; /* IRQ parameter */ - OPL_UPDATEHANDLER UpdateHandler;/* stream update handler */ - int UpdateParam; /* stream update parameter */ +/* envelope phase */ +#define ENV_MOD_RR 0x00 +#define ENV_MOD_DR 0x01 +#define ENV_MOD_AR 0x02 - UINT8 type; /* chip type */ - UINT8 address; /* address register */ - UINT8 status; /* status flag */ - UINT8 statusmask; /* status mask */ - UINT8 mode; /* Reg.08 : CSM,notesel,etc. */ - - int clock; /* master clock (Hz) */ - int rate; /* sampling rate (Hz) */ - double freqbase; /* frequency base */ - double TimerBase; /* Timer base time (==sampling time)*/ -} FM_OPL; - - - -/* mapping of register number (offset) to slot number used by the emulator */ +/* -------------------- tables --------------------- */ static const int slot_array[32]= { 0, 2, 4, 1, 3, 5,-1,-1, @@ -289,326 +104,142 @@ static const int slot_array[32]= -1,-1,-1,-1,-1,-1,-1,-1 }; -/* key scale level */ -/* table is 3dB/octave , DV converts this into 6dB/octave */ -/* 0.1875 is bit 0 weight of the envelope counter (volume) expressed in the 'decibel' scale */ -#define DV (0.1875/2.0) -#define KSL(x) (UINT32)(x/DV) -static const UINT32 ksl_tab[8*16]= -{ +static uint KSL_TABLE[8 * 16]; + +static const double KSL_TABLE_SEED[8 * 16] = { /* OCT 0 */ - KSL(0.000), KSL(0.000), KSL(0.000), KSL(0.000), - KSL(0.000), KSL(0.000), KSL(0.000), KSL(0.000), - KSL(0.000), KSL(0.000), KSL(0.000), KSL(0.000), - KSL(0.000), KSL(0.000), KSL(0.000), KSL(0.000), + 0.000, 0.000, 0.000, 0.000, + 0.000, 0.000, 0.000, 0.000, + 0.000, 0.000, 0.000, 0.000, + 0.000, 0.000, 0.000, 0.000, /* OCT 1 */ - KSL(0.000), KSL(0.000), KSL(0.000), KSL(0.000), - KSL(0.000), KSL(0.000), KSL(0.000), KSL(0.000), - KSL(0.000), KSL(0.750), KSL(1.125), KSL(1.500), - KSL(1.875), KSL(2.250), KSL(2.625), KSL(3.000), + 0.000, 0.000, 0.000, 0.000, + 0.000, 0.000, 0.000, 0.000, + 0.000, 0.750, 1.125, 1.500, + 1.875, 2.250, 2.625, 3.000, /* OCT 2 */ - KSL(0.000), KSL(0.000), KSL(0.000), KSL(0.000), - KSL(0.000), KSL(1.125), KSL(1.875), KSL(2.625), - KSL(3.000), KSL(3.750), KSL(4.125), KSL(4.500), - KSL(4.875), KSL(5.250), KSL(5.625), KSL(6.000), + 0.000, 0.000, 0.000, 0.000, + 0.000, 1.125, 1.875, 2.625, + 3.000, 3.750, 4.125, 4.500, + 4.875, 5.250, 5.625, 6.000, /* OCT 3 */ - KSL(0.000), KSL(0.000), KSL(0.000), KSL(1.875), - KSL(3.000), KSL(4.125), KSL(4.875), KSL(5.625), - KSL(6.000), KSL(6.750), KSL(7.125), KSL(7.500), - KSL(7.875), KSL(8.250), KSL(8.625), KSL(9.000), + 0.000, 0.000, 0.000, 1.875, + 3.000, 4.125, 4.875, 5.625, + 6.000, 6.750, 7.125, 7.500, + 7.875, 8.250, 8.625, 9.000, /* OCT 4 */ - KSL(0.000), KSL(0.000), KSL(3.000), KSL(4.875), - KSL(6.000), KSL(7.125), KSL(7.875), KSL(8.625), - KSL(9.000), KSL(9.750),KSL(10.125),KSL(10.500), - KSL(10.875),KSL(11.250),KSL(11.625),KSL(12.000), + 0.000, 0.000, 3.000, 4.875, + 6.000, 7.125, 7.875, 8.625, + 9.000, 9.750, 10.125, 10.500, + 10.875, 11.250, 11.625, 12.000, /* OCT 5 */ - KSL(0.000), KSL(3.000), KSL(6.000), KSL(7.875), - KSL(9.000),KSL(10.125),KSL(10.875),KSL(11.625), - KSL(12.000),KSL(12.750),KSL(13.125),KSL(13.500), - KSL(13.875),KSL(14.250),KSL(14.625),KSL(15.000), + 0.000, 3.000, 6.000, 7.875, + 9.000, 10.125, 10.875, 11.625, + 12.000, 12.750, 13.125, 13.500, + 13.875, 14.250, 14.625, 15.000, /* OCT 6 */ - KSL(0.000), KSL(6.000), KSL(9.000),KSL(10.875), - KSL(12.000),KSL(13.125),KSL(13.875),KSL(14.625), - KSL(15.000),KSL(15.750),KSL(16.125),KSL(16.500), - KSL(16.875),KSL(17.250),KSL(17.625),KSL(18.000), + 0.000, 6.000, 9.000, 10.875, + 12.000, 13.125, 13.875, 14.625, + 15.000, 15.750, 16.125, 16.500, + 16.875, 17.250, 17.625, 18.000, /* OCT 7 */ - KSL(0.000), KSL(9.000),KSL(12.000),KSL(13.875), - KSL(15.000),KSL(16.125),KSL(16.875),KSL(17.625), - KSL(18.000),KSL(18.750),KSL(19.125),KSL(19.500), - KSL(19.875),KSL(20.250),KSL(20.625),KSL(21.000) + 0.000, 9.000, 12.000, 13.875, + 15.000, 16.125, 16.875, 17.625, + 18.000, 18.750, 19.125, 19.500, + 19.875, 20.250, 20.625, 21.000 }; -#undef DV -#undef KSL -/* sustain level table (3dB per step) */ +/* sustain lebel table (3db per step) */ /* 0 - 15: 0, 3, 6, 9,12,15,18,21,24,27,30,33,36,39,42,93 (dB)*/ -#define SC(db) (UINT32) ( db * (2.0/ENV_STEP) ) - -static const UINT32 sl_tab[16]={ - SC( 0),SC( 1),SC( 2),SC(3 ),SC(4 ),SC(5 ),SC(6 ),SC( 7), - SC( 8),SC( 9),SC(10),SC(11),SC(12),SC(13),SC(14),SC(31) -}; -#undef SC - - -#define RATE_STEPS (8) -static const unsigned char eg_inc[15*RATE_STEPS]={ - -/*cycle:0 1 2 3 4 5 6 7*/ - -/* 0 */ 0,1, 0,1, 0,1, 0,1, /* rates 00..12 0 (increment by 0 or 1) */ -/* 1 */ 0,1, 0,1, 1,1, 0,1, /* rates 00..12 1 */ -/* 2 */ 0,1, 1,1, 0,1, 1,1, /* rates 00..12 2 */ -/* 3 */ 0,1, 1,1, 1,1, 1,1, /* rates 00..12 3 */ -/* 4 */ 1,1, 1,1, 1,1, 1,1, /* rate 13 0 (increment by 1) */ -/* 5 */ 1,1, 1,2, 1,1, 1,2, /* rate 13 1 */ -/* 6 */ 1,2, 1,2, 1,2, 1,2, /* rate 13 2 */ -/* 7 */ 1,2, 2,2, 1,2, 2,2, /* rate 13 3 */ +static int SL_TABLE[16]; -/* 8 */ 2,2, 2,2, 2,2, 2,2, /* rate 14 0 (increment by 2) */ -/* 9 */ 2,2, 2,4, 2,2, 2,4, /* rate 14 1 */ -/*10 */ 2,4, 2,4, 2,4, 2,4, /* rate 14 2 */ -/*11 */ 2,4, 4,4, 2,4, 4,4, /* rate 14 3 */ - -/*12 */ 4,4, 4,4, 4,4, 4,4, /* rates 15 0, 15 1, 15 2, 15 3 (increment by 4) */ -/*13 */ 8,8, 8,8, 8,8, 8,8, /* rates 15 2, 15 3 for attack */ -/*14 */ 0,0, 0,0, 0,0, 0,0, /* infinity rates for attack and decay(s) */ +static const uint SL_TABLE_SEED[16] = { + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 31 }; +#define TL_MAX (EG_ENT * 2) /* limit(tl + ksr + envelope) + sinwave */ +/* TotalLevel : 48 24 12 6 3 1.5 0.75 (dB) */ +/* TL_TABLE[ 0 to TL_MAX ] : plus section */ +/* TL_TABLE[ TL_MAX to TL_MAX+TL_MAX-1 ] : minus section */ +static int *TL_TABLE; -#define O(a) (a*RATE_STEPS) - -/*note that there is no O(13) in this table - it's directly in the code */ -static const unsigned char eg_rate_select[16+64+16]={ /* Envelope Generator rates (16 + 64 rates + 16 RKS) */ -/* 16 dummy (infinite time) rates */ -O(14),O(14),O(14),O(14),O(14),O(14),O(14),O(14), -O(14),O(14),O(14),O(14),O(14),O(14),O(14),O(14), - -/* rates 00-12 */ -O( 0),O( 1),O( 2),O( 3), -O( 0),O( 1),O( 2),O( 3), -O( 0),O( 1),O( 2),O( 3), -O( 0),O( 1),O( 2),O( 3), -O( 0),O( 1),O( 2),O( 3), -O( 0),O( 1),O( 2),O( 3), -O( 0),O( 1),O( 2),O( 3), -O( 0),O( 1),O( 2),O( 3), -O( 0),O( 1),O( 2),O( 3), -O( 0),O( 1),O( 2),O( 3), -O( 0),O( 1),O( 2),O( 3), -O( 0),O( 1),O( 2),O( 3), -O( 0),O( 1),O( 2),O( 3), +/* pointers to TL_TABLE with sinwave output offset */ +static int **SIN_TABLE; -/* rate 13 */ -O( 4),O( 5),O( 6),O( 7), - -/* rate 14 */ -O( 8),O( 9),O(10),O(11), - -/* rate 15 */ -O(12),O(12),O(12),O(12), - -/* 16 dummy rates (same as 15 3) */ -O(12),O(12),O(12),O(12),O(12),O(12),O(12),O(12), -O(12),O(12),O(12),O(12),O(12),O(12),O(12),O(12), - -}; -#undef O - -//rate 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 -//shift 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0 -//mask 4095, 2047, 1023, 511, 255, 127, 63, 31, 15, 7, 3, 1, 0, 0, 0, 0 - -#define O(a) (a*1) -static const unsigned char eg_rate_shift[16+64+16]={ /* Envelope Generator counter shifts (16 + 64 rates + 16 RKS) */ -/* 16 infinite time rates */ -O(0),O(0),O(0),O(0),O(0),O(0),O(0),O(0), -O(0),O(0),O(0),O(0),O(0),O(0),O(0),O(0), - -/* rates 00-12 */ -O(12),O(12),O(12),O(12), -O(11),O(11),O(11),O(11), -O(10),O(10),O(10),O(10), -O( 9),O( 9),O( 9),O( 9), -O( 8),O( 8),O( 8),O( 8), -O( 7),O( 7),O( 7),O( 7), -O( 6),O( 6),O( 6),O( 6), -O( 5),O( 5),O( 5),O( 5), -O( 4),O( 4),O( 4),O( 4), -O( 3),O( 3),O( 3),O( 3), -O( 2),O( 2),O( 2),O( 2), -O( 1),O( 1),O( 1),O( 1), -O( 0),O( 0),O( 0),O( 0), - -/* rate 13 */ -O( 0),O( 0),O( 0),O( 0), - -/* rate 14 */ -O( 0),O( 0),O( 0),O( 0), - -/* rate 15 */ -O( 0),O( 0),O( 0),O( 0), - -/* 16 dummy rates (same as 15 3) */ -O( 0),O( 0),O( 0),O( 0),O( 0),O( 0),O( 0),O( 0), -O( 0),O( 0),O( 0),O( 0),O( 0),O( 0),O( 0),O( 0), - -}; -#undef O +/* LFO table */ +static int *AMS_TABLE; +static int *VIB_TABLE; +/* envelope output curve table */ +/* attack + decay + OFF */ +//static int ENV_CURVE[2*EG_ENT+1]; +static int ENV_CURVE[2 * 4096 + 1]; // to keep it static ... /* multiple table */ -#define ML(x) (UINT8)(x*2) -static const UINT8 mul_tab[16]= { -/* 1/2, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,10,12,12,15,15 */ - ML(0.50), ML(1.00), ML(2.00), ML(3.00), ML(4.00), ML(5.00), ML(6.00), ML(7.00), - ML(8.00), ML(9.00),ML(10.00),ML(10.00),ML(12.00),ML(12.00),ML(15.00),ML(15.00) +#define ML(a) (int)(a * 2) +static const uint MUL_TABLE[16]= { +/* 1/2, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15 */ + ML(0.50), ML(1.00), ML(2.00), ML(3.00), ML(4.00), ML(5.00), ML(6.00), ML(7.00), + ML(8.00), ML(9.00), ML(10.00), ML(10.00),ML(12.00),ML(12.00),ML(15.00),ML(15.00) }; #undef ML -/* TL_TAB_LEN is calculated as: -* 12 - sinus amplitude bits (Y axis) -* 2 - sinus sign bit (Y axis) -* TL_RES_LEN - sinus resolution (X axis) -*/ -#define TL_TAB_LEN (12*2*TL_RES_LEN) -static signed int tl_tab[TL_TAB_LEN]; - -#define ENV_QUIET (TL_TAB_LEN>>4) - -/* sin waveform table in 'decibel' scale */ -/* four waveforms on OPL2 type chips */ -static unsigned int sin_tab[SIN_LEN * 4]; - - -/* LFO Amplitude Modulation table (verified on real YM3812) - 27 output levels (triangle waveform); 1 level takes one of: 192, 256 or 448 samples - - Length: 210 elements. - - Each of the elements has to be repeated - exactly 64 times (on 64 consecutive samples). - The whole table takes: 64 * 210 = 13440 samples. - - When AM = 1 data is used directly - When AM = 0 data is divided by 4 before being used (loosing precision is important) -*/ - -#define LFO_AM_TAB_ELEMENTS 210 - -static const UINT8 lfo_am_table[LFO_AM_TAB_ELEMENTS] = { -0,0,0,0,0,0,0, -1,1,1,1, -2,2,2,2, -3,3,3,3, -4,4,4,4, -5,5,5,5, -6,6,6,6, -7,7,7,7, -8,8,8,8, -9,9,9,9, -10,10,10,10, -11,11,11,11, -12,12,12,12, -13,13,13,13, -14,14,14,14, -15,15,15,15, -16,16,16,16, -17,17,17,17, -18,18,18,18, -19,19,19,19, -20,20,20,20, -21,21,21,21, -22,22,22,22, -23,23,23,23, -24,24,24,24, -25,25,25,25, -26,26,26, -25,25,25,25, -24,24,24,24, -23,23,23,23, -22,22,22,22, -21,21,21,21, -20,20,20,20, -19,19,19,19, -18,18,18,18, -17,17,17,17, -16,16,16,16, -15,15,15,15, -14,14,14,14, -13,13,13,13, -12,12,12,12, -11,11,11,11, -10,10,10,10, -9,9,9,9, -8,8,8,8, -7,7,7,7, -6,6,6,6, -5,5,5,5, -4,4,4,4, -3,3,3,3, -2,2,2,2, -1,1,1,1 -}; - -/* LFO Phase Modulation table (verified on real YM3812) */ -static const INT8 lfo_pm_table[8*8*2] = { - -/* FNUM2/FNUM = 00 0xxxxxxx (0x0000) */ -0, 0, 0, 0, 0, 0, 0, 0, /*LFO PM depth = 0*/ -0, 0, 0, 0, 0, 0, 0, 0, /*LFO PM depth = 1*/ - -/* FNUM2/FNUM = 00 1xxxxxxx (0x0080) */ -0, 0, 0, 0, 0, 0, 0, 0, /*LFO PM depth = 0*/ -1, 0, 0, 0,-1, 0, 0, 0, /*LFO PM depth = 1*/ - -/* FNUM2/FNUM = 01 0xxxxxxx (0x0100) */ -1, 0, 0, 0,-1, 0, 0, 0, /*LFO PM depth = 0*/ -2, 1, 0,-1,-2,-1, 0, 1, /*LFO PM depth = 1*/ - -/* FNUM2/FNUM = 01 1xxxxxxx (0x0180) */ -1, 0, 0, 0,-1, 0, 0, 0, /*LFO PM depth = 0*/ -3, 1, 0,-1,-3,-1, 0, 1, /*LFO PM depth = 1*/ - -/* FNUM2/FNUM = 10 0xxxxxxx (0x0200) */ -2, 1, 0,-1,-2,-1, 0, 1, /*LFO PM depth = 0*/ -4, 2, 0,-2,-4,-2, 0, 2, /*LFO PM depth = 1*/ - -/* FNUM2/FNUM = 10 1xxxxxxx (0x0280) */ -2, 1, 0,-1,-2,-1, 0, 1, /*LFO PM depth = 0*/ -5, 2, 0,-2,-5,-2, 0, 2, /*LFO PM depth = 1*/ - -/* FNUM2/FNUM = 11 0xxxxxxx (0x0300) */ -3, 1, 0,-1,-3,-1, 0, 1, /*LFO PM depth = 0*/ -6, 3, 0,-3,-6,-3, 0, 3, /*LFO PM depth = 1*/ - -/* FNUM2/FNUM = 11 1xxxxxxx (0x0380) */ -3, 1, 0,-1,-3,-1, 0, 1, /*LFO PM depth = 0*/ -7, 3, 0,-3,-7,-3, 0, 3 /*LFO PM depth = 1*/ -}; +/* dummy attack / decay rate ( when rate == 0 ) */ +static int RATE_0[16]= +{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; +/* -------------------- static state --------------------- */ /* lock level of common table */ static int num_lock = 0; /* work table */ static void *cur_chip = NULL; /* current chip point */ -OPL_SLOT *SLOT7_1,*SLOT7_2,*SLOT8_1,*SLOT8_2; +/* currenct chip state */ +/* static OPLSAMPLE *bufL,*bufR; */ +static OPL_CH *S_CH; +static OPL_CH *E_CH; +OPL_SLOT *SLOT7_1, *SLOT7_2, *SLOT8_1, *SLOT8_2; + +static int outd[1]; +static int ams; +static int vib; +int *ams_table; +int *vib_table; +static int amsIncr; +static int vibIncr; +static int feedback2; /* connect for SLOT 2 */ + +/* --------------------- rebuild tables ------------------- */ + +#define SC_KSL(mydb) ((uint) (mydb / (EG_STEP / 2))) +#define SC_SL(db) (int)(db * ((3 / EG_STEP) * (1 << ENV_BITS))) + EG_DST + +void OPLBuildTables(int ENV_BITS_PARAM, int EG_ENT_PARAM) { + int i; -static signed int phase_modulation; /* phase modulation input (SLOT 2) */ -static signed int output[1]; + ENV_BITS = ENV_BITS_PARAM; + EG_ENT = EG_ENT_PARAM; + EG_OFF = ((2 * EG_ENT)<<ENV_BITS); /* OFF */ + EG_DED = EG_OFF; + EG_DST = (EG_ENT << ENV_BITS); /* DECAY START */ + EG_AED = EG_DST; + //EG_STEP = (96.0/EG_ENT); -#if BUILD_Y8950 -static INT32 output_deltat[4]; /* for Y8950 DELTA-T */ -#endif + for (i = 0; i < (int)(sizeof(KSL_TABLE_SEED) / sizeof(double)); i++) + KSL_TABLE[i] = SC_KSL(KSL_TABLE_SEED[i]); -static UINT32 LFO_AM; -static INT32 LFO_PM; + for (i = 0; i < (int)(sizeof(SL_TABLE_SEED) / sizeof(uint)); i++) + SL_TABLE[i] = SC_SL(SL_TABLE_SEED[i]); +} +#undef SC_KSL +#undef SC_SL +/* --------------------- subroutines --------------------- */ -INLINE int limit( int val, int max, int min ) { +inline int Limit(int val, int max, int min) { if ( val > max ) val = max; else if ( val < min ) @@ -617,32 +248,26 @@ INLINE int limit( int val, int max, int min ) { return val; } - /* status set and IRQ handling */ -INLINE void OPL_STATUS_SET(FM_OPL *OPL,int flag) -{ +inline void OPL_STATUS_SET(FM_OPL *OPL, int flag) { /* set status flag */ OPL->status |= flag; - if(!(OPL->status & 0x80)) - { - if(OPL->status & OPL->statusmask) - { /* IRQ on */ + if(!(OPL->status & 0x80)) { + if(OPL->status & OPL->statusmask) { /* IRQ on */ OPL->status |= 0x80; /* callback user interrupt handler (IRQ is OFF to ON) */ - if(OPL->IRQHandler) (OPL->IRQHandler)(OPL->IRQParam,1); + if(OPL->IRQHandler) + (OPL->IRQHandler)(OPL->IRQParam,1); } } } /* status reset and IRQ handling */ -INLINE void OPL_STATUS_RESET(FM_OPL *OPL,int flag) -{ +inline void OPL_STATUS_RESET(FM_OPL *OPL, int flag) { /* reset status flag */ - OPL->status &=~flag; - if((OPL->status & 0x80)) - { - if (!(OPL->status & OPL->statusmask) ) - { + OPL->status &= ~flag; + if((OPL->status & 0x80)) { + if (!(OPL->status & OPL->statusmask)) { OPL->status &= 0x7f; /* callback user interrupt handler (IRQ is ON to OFF) */ if(OPL->IRQHandler) (OPL->IRQHandler)(OPL->IRQParam,0); @@ -651,1182 +276,771 @@ INLINE void OPL_STATUS_RESET(FM_OPL *OPL,int flag) } /* IRQ mask set */ -INLINE void OPL_STATUSMASK_SET(FM_OPL *OPL,int flag) -{ +inline void OPL_STATUSMASK_SET(FM_OPL *OPL, int flag) { OPL->statusmask = flag; /* IRQ handling check */ OPL_STATUS_SET(OPL,0); OPL_STATUS_RESET(OPL,0); } - -/* advance LFO to next sample */ -INLINE void advance_lfo(FM_OPL *OPL) -{ - UINT8 tmp; - - /* LFO */ - OPL->lfo_am_cnt += OPL->lfo_am_inc; - if (OPL->lfo_am_cnt >= (UINT32)(LFO_AM_TAB_ELEMENTS<<LFO_SH) ) /* lfo_am_table is 210 elements long */ - OPL->lfo_am_cnt -= (UINT32)(LFO_AM_TAB_ELEMENTS<<LFO_SH); - - tmp = lfo_am_table[ OPL->lfo_am_cnt >> LFO_SH ]; - - if (OPL->lfo_am_depth) - LFO_AM = tmp; - else - LFO_AM = tmp>>2; - - OPL->lfo_pm_cnt += OPL->lfo_pm_inc; - LFO_PM = ((OPL->lfo_pm_cnt>>LFO_SH) & 7) | OPL->lfo_pm_depth_range; +/* ----- key on ----- */ +inline void OPL_KEYON(OPL_SLOT *SLOT) { + /* sin wave restart */ + SLOT->Cnt = 0; + /* set attack */ + SLOT->evm = ENV_MOD_AR; + SLOT->evs = SLOT->evsa; + SLOT->evc = EG_AST; + SLOT->eve = EG_AED; +} +/* ----- key off ----- */ +inline void OPL_KEYOFF(OPL_SLOT *SLOT) { + if( SLOT->evm > ENV_MOD_RR) { + /* set envelope counter from envleope output */ + SLOT->evm = ENV_MOD_RR; + if( !(SLOT->evc & EG_DST) ) + //SLOT->evc = (ENV_CURVE[SLOT->evc>>ENV_BITS]<<ENV_BITS) + EG_DST; + SLOT->evc = EG_DST; + SLOT->eve = EG_DED; + SLOT->evs = SLOT->evsr; + } } -/* advance to next sample */ -INLINE void advancex(FM_OPL *OPL) -{ - OPL_CH *CH; - OPL_SLOT *op; - int i; - - OPL->eg_timer += OPL->eg_timer_add; - - while (OPL->eg_timer >= OPL->eg_timer_overflow) - { - OPL->eg_timer -= OPL->eg_timer_overflow; - - OPL->eg_cnt++; - - for (i=0; i<9*2; i++) - { - CH = &OPL->P_CH[i/2]; - op = &CH->SLOT[i&1]; - - /* Envelope Generator */ - switch(op->state) - { - case EG_ATT: /* attack phase */ - { - - if ( !(OPL->eg_cnt & ((1<<op->eg_sh_ar)-1) ) ) - { - op->volume += (~op->volume * - (eg_inc[op->eg_sel_ar + ((OPL->eg_cnt>>op->eg_sh_ar)&7)]) - ) >>3; - - if (op->volume <= MIN_ATT_INDEX) - { - op->volume = MIN_ATT_INDEX; - op->state = EG_DEC; - } - - } - - } - break; - - case EG_DEC: /* decay phase */ - if ( !(OPL->eg_cnt & ((1<<op->eg_sh_dr)-1) ) ) - { - op->volume += eg_inc[op->eg_sel_dr + ((OPL->eg_cnt>>op->eg_sh_dr)&7)]; - - if ( op->volume >= (INT32)op->sl ) - op->state = EG_SUS; - - } +/* ---------- calcrate Envelope Generator & Phase Generator ---------- */ +/* return : envelope output */ +inline uint OPL_CALC_SLOT(OPL_SLOT *SLOT) { + /* calcrate envelope generator */ + if((SLOT->evc += SLOT->evs) >= SLOT->eve) { + switch( SLOT->evm ){ + case ENV_MOD_AR: /* ATTACK -> DECAY1 */ + /* next DR */ + SLOT->evm = ENV_MOD_DR; + SLOT->evc = EG_DST; + SLOT->eve = SLOT->SL; + SLOT->evs = SLOT->evsd; break; - - case EG_SUS: /* sustain phase */ - - /* this is important behaviour: - one can change percusive/non-percussive modes on the fly and - the chip will remain in sustain phase - verified on real YM3812 */ - - if(op->eg_type) /* non-percussive mode */ - { - /* do nothing */ - } - else /* percussive mode */ - { - /* during sustain phase chip adds Release Rate (in percussive mode) */ - if ( !(OPL->eg_cnt & ((1<<op->eg_sh_rr)-1) ) ) - { - op->volume += eg_inc[op->eg_sel_rr + ((OPL->eg_cnt>>op->eg_sh_rr)&7)]; - - if ( op->volume >= MAX_ATT_INDEX ) - op->volume = MAX_ATT_INDEX; - } - /* else do nothing in sustain phase */ - } - break; - - case EG_REL: /* release phase */ - if ( !(OPL->eg_cnt & ((1<<op->eg_sh_rr)-1) ) ) - { - op->volume += eg_inc[op->eg_sel_rr + ((OPL->eg_cnt>>op->eg_sh_rr)&7)]; - - if ( op->volume >= MAX_ATT_INDEX ) - { - op->volume = MAX_ATT_INDEX; - op->state = EG_OFF; - } - - } + case ENV_MOD_DR: /* DECAY -> SL or RR */ + SLOT->evc = SLOT->SL; + SLOT->eve = EG_DED; + if(SLOT->eg_typ) { + SLOT->evs = 0; + } else { + SLOT->evm = ENV_MOD_RR; + SLOT->evs = SLOT->evsr; + } break; - - default: + case ENV_MOD_RR: /* RR -> OFF */ + SLOT->evc = EG_OFF; + SLOT->eve = EG_OFF + 1; + SLOT->evs = 0; break; - } } } + /* calcrate envelope */ + return SLOT->TLL + ENV_CURVE[SLOT->evc>>ENV_BITS] + (SLOT->ams ? ams : 0); +} - for (i=0; i<9*2; i++) - { - CH = &OPL->P_CH[i/2]; - op = &CH->SLOT[i&1]; - - /* Phase Generator */ - if(op->vib) - { - UINT8 block; - UINT32 block_fnum = CH->block_fnum; - - unsigned int fnum_lfo = (block_fnum&0x0380) >> 7; +/* set algorythm connection */ +static void set_algorythm(OPL_CH *CH) { + int *carrier = &outd[0]; + CH->connect1 = CH->CON ? carrier : &feedback2; + CH->connect2 = carrier; +} - signed int lfo_fn_table_index_offset = lfo_pm_table[LFO_PM + 16*fnum_lfo ]; +/* ---------- frequency counter for operater update ---------- */ +inline void CALC_FCSLOT(OPL_CH *CH, OPL_SLOT *SLOT) { + int ksr; - if (lfo_fn_table_index_offset) /* LFO phase modulation active */ - { - block_fnum += lfo_fn_table_index_offset; - block = (block_fnum&0x1c00) >> 10; - op->Cnt += (OPL->fn_tab[block_fnum&0x03ff] >> (7-block)) * op->mul;//ok - } - else /* LFO phase modulation = zero */ - { - op->Cnt += op->Incr; - } - } - else /* LFO phase modulation disabled for this operator */ - { - op->Cnt += op->Incr; - } - } + /* frequency step counter */ + SLOT->Incr = CH->fc * SLOT->mul; + ksr = CH->kcode >> SLOT->KSR; - /* The Noise Generator of the YM3812 is 23-bit shift register. - * Period is equal to 2^23-2 samples. - * Register works at sampling frequency of the chip, so output - * can change on every sample. - * - * Output of the register and input to the bit 22 is: - * bit0 XOR bit14 XOR bit15 XOR bit22 - * - * Simply use bit 22 as the noise output. - */ - - OPL->noise_p += OPL->noise_f; - i = OPL->noise_p >> FREQ_SH; /* number of events (shifts of the shift register) */ - OPL->noise_p &= FREQ_MASK; - while (i) + if( SLOT->ksr != ksr ) { - /* - UINT32 j; - j = ( (OPL->noise_rng) ^ (OPL->noise_rng>>14) ^ (OPL->noise_rng>>15) ^ (OPL->noise_rng>>22) ) & 1; - OPL->noise_rng = (j<<22) | (OPL->noise_rng>>1); - */ - - /* - Instead of doing all the logic operations above, we - use a trick here (and use bit 0 as the noise output). - The difference is only that the noise bit changes one - step ahead. This doesn't matter since we don't know - what is real state of the noise_rng after the reset. - */ - - if (OPL->noise_rng & 1) OPL->noise_rng ^= 0x800302; - OPL->noise_rng >>= 1; - - i--; + SLOT->ksr = ksr; + /* attack , decay rate recalcration */ + SLOT->evsa = SLOT->AR[ksr]; + SLOT->evsd = SLOT->DR[ksr]; + SLOT->evsr = SLOT->RR[ksr]; } + SLOT->TLL = SLOT->TL + (CH->ksl_base>>SLOT->ksl); } +/* set multi,am,vib,EG-TYP,KSR,mul */ +inline void set_mul(FM_OPL *OPL, int slot, int v) { + OPL_CH *CH = &OPL->P_CH[slot / 2]; + OPL_SLOT *SLOT = &CH->SLOT[slot & 1]; -INLINE signed int op_calc(UINT32 phase, unsigned int env, signed int pm, unsigned int wave_tab) -{ - UINT32 p; - - p = (env<<4) + sin_tab[wave_tab + ((((signed int)((phase & ~FREQ_MASK) + (pm<<16))) >> FREQ_SH ) & SIN_MASK) ]; - - if (p >= TL_TAB_LEN) - return 0; - return tl_tab[p]; + SLOT->mul = MUL_TABLE[v & 0x0f]; + SLOT->KSR = (v & 0x10) ? 0 : 2; + SLOT->eg_typ = (v & 0x20) >> 5; + SLOT->vib = (v & 0x40); + SLOT->ams = (v & 0x80); + CALC_FCSLOT(CH, SLOT); } -INLINE signed int op_calc1(UINT32 phase, unsigned int env, signed int pm, unsigned int wave_tab) -{ - UINT32 p; - INT32 i; +/* set ksl & tl */ +inline void set_ksl_tl(FM_OPL *OPL, int slot, int v) { + OPL_CH *CH = &OPL->P_CH[slot / 2]; + OPL_SLOT *SLOT = &CH->SLOT[slot & 1]; + int ksl = v >> 6; /* 0 / 1.5 / 3 / 6 db/OCT */ - i = (phase & ~FREQ_MASK) + pm; + SLOT->ksl = ksl ? 3-ksl : 31; + SLOT->TL = (int)((v & 0x3f) * (0.75 / EG_STEP)); /* 0.75db step */ -/*logerror("i=%08x (i>>16)&511=%8i phase=%i [pm=%08x] ",i, (i>>16)&511, phase>>FREQ_SH, pm);*/ + if(!(OPL->mode & 0x80)) { /* not CSM latch total level */ + SLOT->TLL = SLOT->TL + (CH->ksl_base >> SLOT->ksl); + } +} - p = (env<<4) + sin_tab[ wave_tab + ((i>>FREQ_SH) & SIN_MASK)]; +/* set attack rate & decay rate */ +inline void set_ar_dr(FM_OPL *OPL, int slot, int v) { + OPL_CH *CH = &OPL->P_CH[slot / 2]; + OPL_SLOT *SLOT = &CH->SLOT[slot & 1]; + int ar = v >> 4; + int dr = v & 0x0f; -/*logerror("(p&255=%i p>>8=%i) out= %i\n", p&255,p>>8, tl_tab[p&255]>>(p>>8) );*/ + SLOT->AR = ar ? &OPL->AR_TABLE[ar << 2] : RATE_0; + SLOT->evsa = SLOT->AR[SLOT->ksr]; + if(SLOT->evm == ENV_MOD_AR) + SLOT->evs = SLOT->evsa; - if (p >= TL_TAB_LEN) - return 0; - return tl_tab[p]; + SLOT->DR = dr ? &OPL->DR_TABLE[dr<<2] : RATE_0; + SLOT->evsd = SLOT->DR[SLOT->ksr]; + if(SLOT->evm == ENV_MOD_DR) + SLOT->evs = SLOT->evsd; } - -#define volume_calc(OP) ((OP)->TLL + ((UINT32)(OP)->volume) + (LFO_AM & (OP)->AMmask)) - -/* calculate output */ -INLINE void OPL_CALC_CH( OPL_CH *CH ) -{ +/* set sustain level & release rate */ +inline void set_sl_rr(FM_OPL *OPL, int slot, int v) { + OPL_CH *CH = &OPL->P_CH[slot / 2]; + OPL_SLOT *SLOT = &CH->SLOT[slot & 1]; + int sl = v >> 4; + int rr = v & 0x0f; + + SLOT->SL = SL_TABLE[sl]; + if(SLOT->evm == ENV_MOD_DR) + SLOT->eve = SLOT->SL; + SLOT->RR = &OPL->DR_TABLE[rr<<2]; + SLOT->evsr = SLOT->RR[SLOT->ksr]; + if(SLOT->evm == ENV_MOD_RR) + SLOT->evs = SLOT->evsr; +} + +/* operator output calcrator */ +#define OP_OUT(slot,env,con) slot->wavetable[((slot->Cnt + con) / (0x1000000 / SIN_ENT)) & (SIN_ENT-1)][env] +/* ---------- calcrate one of channel ---------- */ +inline void OPL_CALC_CH(OPL_CH *CH) { + uint env_out; OPL_SLOT *SLOT; - unsigned int env; - signed int out; - - phase_modulation = 0; + feedback2 = 0; /* SLOT 1 */ SLOT = &CH->SLOT[SLOT1]; - env = volume_calc(SLOT); - out = SLOT->op1_out[0] + SLOT->op1_out[1]; - SLOT->op1_out[0] = SLOT->op1_out[1]; - *SLOT->connect1 += SLOT->op1_out[0]; - SLOT->op1_out[1] = 0; - if( env < ENV_QUIET ) - { - if (!SLOT->FB) - out = 0; - SLOT->op1_out[1] = op_calc1(SLOT->Cnt, env, (out<<SLOT->FB), SLOT->wavetable ); + env_out=OPL_CALC_SLOT(SLOT); + if(env_out < (uint)(EG_ENT - 1)) { + /* PG */ + if(SLOT->vib) + SLOT->Cnt += (SLOT->Incr * vib / VIB_RATE); + else + SLOT->Cnt += SLOT->Incr; + /* connectoion */ + if(CH->FB) { + int feedback1 = (CH->op1_out[0] + CH->op1_out[1]) >> CH->FB; + CH->op1_out[1] = CH->op1_out[0]; + *CH->connect1 += CH->op1_out[0] = OP_OUT(SLOT, env_out, feedback1); + } + else { + *CH->connect1 += OP_OUT(SLOT, env_out, 0); + } + }else { + CH->op1_out[1] = CH->op1_out[0]; + CH->op1_out[0] = 0; } - /* SLOT 2 */ - SLOT++; - env = volume_calc(SLOT); - if( env < ENV_QUIET ) - output[0] += op_calc(SLOT->Cnt, env, phase_modulation, SLOT->wavetable); + SLOT = &CH->SLOT[SLOT2]; + env_out=OPL_CALC_SLOT(SLOT); + if(env_out < (uint)(EG_ENT - 1)) { + /* PG */ + if(SLOT->vib) + SLOT->Cnt += (SLOT->Incr * vib / VIB_RATE); + else + SLOT->Cnt += SLOT->Incr; + /* connectoion */ + outd[0] += OP_OUT(SLOT, env_out, feedback2); + } } -/* - operators used in the rhythm sounds generation process: - - Envelope Generator: - -channel operator register number Bass High Snare Tom Top -/ slot number TL ARDR SLRR Wave Drum Hat Drum Tom Cymbal - 6 / 0 12 50 70 90 f0 + - 6 / 1 15 53 73 93 f3 + - 7 / 0 13 51 71 91 f1 + - 7 / 1 16 54 74 94 f4 + - 8 / 0 14 52 72 92 f2 + - 8 / 1 17 55 75 95 f5 + +/* ---------- calcrate rythm block ---------- */ +#define WHITE_NOISE_db 6.0 +inline void OPL_CALC_RH(OPL_CH *CH) { + uint env_tam, env_sd, env_top, env_hh; + int whitenoise = int((rand()&1) * (WHITE_NOISE_db / EG_STEP)); + int tone8; - Phase Generator: - -channel operator register number Bass High Snare Tom Top -/ slot number MULTIPLE Drum Hat Drum Tom Cymbal - 6 / 0 12 30 + - 6 / 1 15 33 + - 7 / 0 13 31 + + + - 7 / 1 16 34 ----- n o t u s e d ----- - 8 / 0 14 32 + - 8 / 1 17 35 + + - -channel operator register number Bass High Snare Tom Top -number number BLK/FNUM2 FNUM Drum Hat Drum Tom Cymbal - 6 12,15 B6 A6 + - - 7 13,16 B7 A7 + + + - - 8 14,17 B8 A8 + + + - -*/ - -/* calculate rhythm */ - -INLINE void OPL_CALC_RH( OPL_CH *CH, unsigned int noise ) -{ OPL_SLOT *SLOT; - signed int out; - unsigned int env; - + int env_out; - /* Bass Drum (verified on real YM3812): - - depends on the channel 6 'connect' register: - when connect = 0 it works the same as in normal (non-rhythm) mode (op1->op2->out) - when connect = 1 _only_ operator 2 is present on output (op2->out), operator 1 is ignored - - output sample always is multiplied by 2 - */ - - phase_modulation = 0; + /* BD : same as FM serial mode and output level is large */ + feedback2 = 0; /* SLOT 1 */ SLOT = &CH[6].SLOT[SLOT1]; - env = volume_calc(SLOT); - - out = SLOT->op1_out[0] + SLOT->op1_out[1]; - SLOT->op1_out[0] = SLOT->op1_out[1]; - - if (!SLOT->CON) - phase_modulation = SLOT->op1_out[0]; - //else ignore output of operator 1 - - SLOT->op1_out[1] = 0; - if( env < ENV_QUIET ) - { - if (!SLOT->FB) - out = 0; - SLOT->op1_out[1] = op_calc1(SLOT->Cnt, env, (out<<SLOT->FB), SLOT->wavetable ); + env_out = OPL_CALC_SLOT(SLOT); + if(env_out < EG_ENT-1) { + /* PG */ + if(SLOT->vib) + SLOT->Cnt += (SLOT->Incr * vib / VIB_RATE); + else + SLOT->Cnt += SLOT->Incr; + /* connectoion */ + if(CH[6].FB) { + int feedback1 = (CH[6].op1_out[0] + CH[6].op1_out[1]) >> CH[6].FB; + CH[6].op1_out[1] = CH[6].op1_out[0]; + feedback2 = CH[6].op1_out[0] = OP_OUT(SLOT, env_out, feedback1); + } + else { + feedback2 = OP_OUT(SLOT, env_out, 0); + } + }else { + feedback2 = 0; + CH[6].op1_out[1] = CH[6].op1_out[0]; + CH[6].op1_out[0] = 0; } - /* SLOT 2 */ - SLOT++; - env = volume_calc(SLOT); - if( env < ENV_QUIET ) - output[0] += op_calc(SLOT->Cnt, env, phase_modulation, SLOT->wavetable) * 2; - - - /* Phase generation is based on: */ - // HH (13) channel 7->slot 1 combined with channel 8->slot 2 (same combination as TOP CYMBAL but different output phases) - // SD (16) channel 7->slot 1 - // TOM (14) channel 8->slot 1 - // TOP (17) channel 7->slot 1 combined with channel 8->slot 2 (same combination as HIGH HAT but different output phases) - - /* Envelope generation based on: */ - // HH channel 7->slot1 - // SD channel 7->slot2 - // TOM channel 8->slot1 - // TOP channel 8->slot2 - - - /* The following formulas can be well optimized. - I leave them in direct form for now (in case I've missed something). - */ - - /* High Hat (verified on real YM3812) */ - env = volume_calc(SLOT7_1); - if( env < ENV_QUIET ) - { - - /* high hat phase generation: - phase = d0 or 234 (based on frequency only) - phase = 34 or 2d0 (based on noise) - */ - - /* base frequency derived from operator 1 in channel 7 */ - unsigned char bit7 = ((SLOT7_1->Cnt>>FREQ_SH)>>7)&1; - unsigned char bit3 = ((SLOT7_1->Cnt>>FREQ_SH)>>3)&1; - unsigned char bit2 = ((SLOT7_1->Cnt>>FREQ_SH)>>2)&1; - - unsigned char res1 = (bit2 ^ bit7) | bit3; - - /* when res1 = 0 phase = 0x000 | 0xd0; */ - /* when res1 = 1 phase = 0x200 | (0xd0>>2); */ - UINT32 phase = res1 ? (0x200|(0xd0>>2)) : 0xd0; - - /* enable gate based on frequency of operator 2 in channel 8 */ - unsigned char bit5e= ((SLOT8_2->Cnt>>FREQ_SH)>>5)&1; - unsigned char bit3e= ((SLOT8_2->Cnt>>FREQ_SH)>>3)&1; - - unsigned char res2 = (bit3e ^ bit5e); - - /* when res2 = 0 pass the phase from calculation above (res1); */ - /* when res2 = 1 phase = 0x200 | (0xd0>>2); */ - if (res2) - phase = (0x200|(0xd0>>2)); - - - /* when phase & 0x200 is set and noise=1 then phase = 0x200|0xd0 */ - /* when phase & 0x200 is set and noise=0 then phase = 0x200|(0xd0>>2), ie no change */ - if (phase&0x200) - { - if (noise) - phase = 0x200|0xd0; - } + SLOT = &CH[6].SLOT[SLOT2]; + env_out = OPL_CALC_SLOT(SLOT); + if(env_out < EG_ENT-1) { + /* PG */ + if(SLOT->vib) + SLOT->Cnt += (SLOT->Incr * vib / VIB_RATE); else - /* when phase & 0x200 is clear and noise=1 then phase = 0xd0>>2 */ - /* when phase & 0x200 is clear and noise=0 then phase = 0xd0, ie no change */ - { - if (noise) - phase = 0xd0>>2; - } - - output[0] += op_calc(phase<<FREQ_SH, env, 0, SLOT7_1->wavetable) * 2; + SLOT->Cnt += SLOT->Incr; + /* connectoion */ + outd[0] += OP_OUT(SLOT, env_out, feedback2) * 2; } - /* Snare Drum (verified on real YM3812) */ - env = volume_calc(SLOT7_2); - if( env < ENV_QUIET ) - { - /* base frequency derived from operator 1 in channel 7 */ - unsigned char bit8 = ((SLOT7_1->Cnt>>FREQ_SH)>>8)&1; - - /* when bit8 = 0 phase = 0x100; */ - /* when bit8 = 1 phase = 0x200; */ - UINT32 phase = bit8 ? 0x200 : 0x100; - - /* Noise bit XOR'es phase by 0x100 */ - /* when noisebit = 0 pass the phase from calculation above */ - /* when noisebit = 1 phase ^= 0x100; */ - /* in other words: phase ^= (noisebit<<8); */ - if (noise) - phase ^= 0x100; - - output[0] += op_calc(phase<<FREQ_SH, env, 0, SLOT7_1->wavetable) * 2; + // SD (17) = mul14[fnum7] + white noise + // TAM (15) = mul15[fnum8] + // TOP (18) = fnum6(mul18[fnum8]+whitenoise) + // HH (14) = fnum7(mul18[fnum8]+whitenoise) + white noise + env_sd = OPL_CALC_SLOT(SLOT7_2) + whitenoise; + env_tam =OPL_CALC_SLOT(SLOT8_1); + env_top = OPL_CALC_SLOT(SLOT8_2); + env_hh = OPL_CALC_SLOT(SLOT7_1) + whitenoise; + + /* PG */ + if(SLOT7_1->vib) + SLOT7_1->Cnt += (2 * SLOT7_1->Incr * vib / VIB_RATE); + else + SLOT7_1->Cnt += 2 * SLOT7_1->Incr; + if(SLOT7_2->vib) + SLOT7_2->Cnt += ((CH[7].fc * 8) * vib / VIB_RATE); + else + SLOT7_2->Cnt += (CH[7].fc * 8); + if(SLOT8_1->vib) + SLOT8_1->Cnt += (SLOT8_1->Incr * vib / VIB_RATE); + else + SLOT8_1->Cnt += SLOT8_1->Incr; + if(SLOT8_2->vib) + SLOT8_2->Cnt += ((CH[8].fc * 48) * vib / VIB_RATE); + else + SLOT8_2->Cnt += (CH[8].fc * 48); + + tone8 = OP_OUT(SLOT8_2,whitenoise,0 ); + + /* SD */ + if(env_sd < (uint)(EG_ENT - 1)) + outd[0] += OP_OUT(SLOT7_1, env_sd, 0) * 8; + /* TAM */ + if(env_tam < (uint)(EG_ENT - 1)) + outd[0] += OP_OUT(SLOT8_1, env_tam, 0) * 2; + /* TOP-CY */ + if(env_top < (uint)(EG_ENT - 1)) + outd[0] += OP_OUT(SLOT7_2, env_top, tone8) * 2; + /* HH */ + if(env_hh < (uint)(EG_ENT-1)) + outd[0] += OP_OUT(SLOT7_2, env_hh, tone8) * 2; +} + +/* ----------- initialize time tabls ----------- */ +static void init_timetables(FM_OPL *OPL, int ARRATE, int DRRATE) { + int i; + double rate; + + /* make attack rate & decay rate tables */ + for (i = 0; i < 4; i++) + OPL->AR_TABLE[i] = OPL->DR_TABLE[i] = 0; + for (i = 4; i <= 60; i++){ + rate = OPL->freqbase; /* frequency rate */ + if(i < 60) + rate *= 1.0 + (i & 3) * 0.25; /* b0-1 : x1 , x1.25 , x1.5 , x1.75 */ + rate *= 1 << ((i >> 2) - 1); /* b2-5 : shift bit */ + rate *= (double)(EG_ENT << ENV_BITS); + OPL->AR_TABLE[i] = (int)(rate / ARRATE); + OPL->DR_TABLE[i] = (int)(rate / DRRATE); } - - /* Tom Tom (verified on real YM3812) */ - env = volume_calc(SLOT8_1); - if( env < ENV_QUIET ) - output[0] += op_calc(SLOT8_1->Cnt, env, 0, SLOT8_1->wavetable) * 2; - - /* Top Cymbal (verified on real YM3812) */ - env = volume_calc(SLOT8_2); - if( env < ENV_QUIET ) - { - /* base frequency derived from operator 1 in channel 7 */ - unsigned char bit7 = ((SLOT7_1->Cnt>>FREQ_SH)>>7)&1; - unsigned char bit3 = ((SLOT7_1->Cnt>>FREQ_SH)>>3)&1; - unsigned char bit2 = ((SLOT7_1->Cnt>>FREQ_SH)>>2)&1; - - unsigned char res1 = (bit2 ^ bit7) | bit3; - - /* when res1 = 0 phase = 0x000 | 0x100; */ - /* when res1 = 1 phase = 0x200 | 0x100; */ - UINT32 phase = res1 ? 0x300 : 0x100; - - /* enable gate based on frequency of operator 2 in channel 8 */ - unsigned char bit5e= ((SLOT8_2->Cnt>>FREQ_SH)>>5)&1; - unsigned char bit3e= ((SLOT8_2->Cnt>>FREQ_SH)>>3)&1; - - unsigned char res2 = (bit3e ^ bit5e); - /* when res2 = 0 pass the phase from calculation above (res1); */ - /* when res2 = 1 phase = 0x200 | 0x100; */ - if (res2) - phase = 0x300; - - output[0] += op_calc(phase<<FREQ_SH, env, 0, SLOT8_2->wavetable) * 2; + for (i = 60; i < 75; i++) { + OPL->AR_TABLE[i] = EG_AED-1; + OPL->DR_TABLE[i] = OPL->DR_TABLE[60]; } - } +/* ---------- generic table initialize ---------- */ +static int OPLOpenTable(void) { + int s,t; + double rate; + int i,j; + double pom; -/* generic table initialize */ -static int init_tables(void) -{ - signed int i,x; - signed int n; - double o,m; - - - for (x=0; x<TL_RES_LEN; x++) - { - m = (1<<16) / pow(2.0, (x+1) * (ENV_STEP/4.0) / 8.0); - m = floor(m); - - /* we never reach (1<<16) here due to the (x+1) */ - /* result fits within 16 bits at maximum */ - - n = (int)m; /* 16 bits here */ - n >>= 4; /* 12 bits here */ - if (n&1) /* round to nearest */ - n = (n>>1)+1; - else - n = n>>1; - /* 11 bits here (rounded) */ - n <<= 1; /* 12 bits here (as in real chip) */ - tl_tab[ x*2 + 0 ] = n; - tl_tab[ x*2 + 1 ] = -tl_tab[ x*2 + 0 ]; - - for (i=1; i<12; i++) - { - tl_tab[ x*2+0 + i*2*TL_RES_LEN ] = tl_tab[ x*2+0 ]>>i; - tl_tab[ x*2+1 + i*2*TL_RES_LEN ] = -tl_tab[ x*2+0 + i*2*TL_RES_LEN ]; - } - #if 0 - logerror("tl %04i", x*2); - for (i=0; i<12; i++) - logerror(", [%02i] %5i", i*2, tl_tab[ x*2 /*+1*/ + i*2*TL_RES_LEN ] ); - logerror("\n"); - #endif + /* allocate dynamic tables */ + if((TL_TABLE = (int *)malloc(TL_MAX * 2 * sizeof(int))) == NULL) + return 0; + if((SIN_TABLE = (int **)malloc(SIN_ENT * 4 * sizeof(int *))) == NULL) { + free(TL_TABLE); + return 0; } - /*logerror("FMOPL.C: TL_TAB_LEN = %i elements (%i bytes)\n",TL_TAB_LEN, (int)sizeof(tl_tab));*/ - - - for (i=0; i<SIN_LEN; i++) - { - /* non-standard sinus */ - m = sin( ((i*2)+1) * PI / SIN_LEN ); /* checked against the real chip */ - - /* we never reach zero here due to ((i*2)+1) */ - - if (m>0.0) - o = 8*log(1.0/m)/log(2.0); /* convert to 'decibels' */ - else - o = 8*log(-1.0/m)/log(2.0); /* convert to 'decibels' */ - - o = o / (ENV_STEP/4); - - n = (int)(2.0*o); - if (n&1) /* round to nearest */ - n = (n>>1)+1; - else - n = n>>1; - - sin_tab[ i ] = n*2 + (m>=0.0? 0: 1 ); - - /*logerror("FMOPL.C: sin [%4i (hex=%03x)]= %4i (tl_tab value=%5i)\n", i, i, sin_tab[i], tl_tab[sin_tab[i]] );*/ + if((AMS_TABLE = (int *)malloc(AMS_ENT * 2 * sizeof(int))) == NULL) { + free(TL_TABLE); + free(SIN_TABLE); + return 0; } - - for (i=0; i<SIN_LEN; i++) - { - /* waveform 1: __ __ */ - /* / \____/ \____*/ - /* output only first half of the sinus waveform (positive one) */ - - if (i & (1<<(SIN_BITS-1)) ) - sin_tab[1*SIN_LEN+i] = TL_TAB_LEN; - else - sin_tab[1*SIN_LEN+i] = sin_tab[i]; - - /* waveform 2: __ __ __ __ */ - /* / \/ \/ \/ \*/ - /* abs(sin) */ - - sin_tab[2*SIN_LEN+i] = sin_tab[i & (SIN_MASK>>1) ]; - - /* waveform 3: _ _ _ _ */ - /* / |_/ |_/ |_/ |_*/ - /* abs(output only first quarter of the sinus waveform) */ - - if (i & (1<<(SIN_BITS-2)) ) - sin_tab[3*SIN_LEN+i] = TL_TAB_LEN; - else - sin_tab[3*SIN_LEN+i] = sin_tab[i & (SIN_MASK>>2)]; - - /*logerror("FMOPL.C: sin1[%4i]= %4i (tl_tab value=%5i)\n", i, sin_tab[1*SIN_LEN+i], tl_tab[sin_tab[1*SIN_LEN+i]] ); - logerror("FMOPL.C: sin2[%4i]= %4i (tl_tab value=%5i)\n", i, sin_tab[2*SIN_LEN+i], tl_tab[sin_tab[2*SIN_LEN+i]] ); - logerror("FMOPL.C: sin3[%4i]= %4i (tl_tab value=%5i)\n", i, sin_tab[3*SIN_LEN+i], tl_tab[sin_tab[3*SIN_LEN+i]] );*/ + if((VIB_TABLE = (int *)malloc(VIB_ENT * 2 * sizeof(int))) == NULL) { + free(TL_TABLE); + free(SIN_TABLE); + free(AMS_TABLE); + return 0; } - /*logerror("FMOPL.C: ENV_QUIET= %08x (dec*8=%i)\n", ENV_QUIET, ENV_QUIET*8 );*/ - - -#ifdef SAVE_SAMPLE - sample[0]=fopen("sampsum.pcm","wb"); -#endif - - return 1; -} - -static void OPLCloseTable( void ) -{ -#ifdef SAVE_SAMPLE - fclose(sample[0]); -#endif -} - - - -static void OPL_initalize(FM_OPL *OPL) -{ - int i; - - /* frequency base */ -#if 1 - OPL->freqbase = (OPL->rate) ? ((double)OPL->clock / 72.0) / OPL->rate : 0; -#else - OPL->rate = (double)OPL->clock / 72.0; - OPL->freqbase = 1.0; -#endif - - /* Timer base time */ - OPL->TimerBase = 1.0 / ((double)OPL->clock / 72.0 ); - - /* make fnumber -> increment counter table */ - for( i=0 ; i < 1024 ; i++ ) - { - /* opn phase increment counter = 20bit */ - OPL->fn_tab[i] = (UINT32)( (double)i * 64 * OPL->freqbase * (1<<(FREQ_SH-10)) ); /* -10 because chip works with 10.10 fixed point, while we use 16.16 */ -#if 0 - logerror("FMOPL.C: fn_tab[%4i] = %08x (dec=%8i)\n", - i, OPL->fn_tab[i]>>6, OPL->fn_tab[i]>>6 ); -#endif + /* make total level table */ + for (t = 0; t < EG_ENT - 1 ; t++){ + rate = ((1 << TL_BITS) - 1) / pow(10, EG_STEP * t / 20); /* dB -> voltage */ + TL_TABLE[ t] = (int)rate; + TL_TABLE[TL_MAX + t] = -TL_TABLE[t]; + } + /* fill volume off area */ + for (t = EG_ENT - 1; t < TL_MAX; t++){ + TL_TABLE[t] = TL_TABLE[TL_MAX + t] = 0; } -#if 0 - for( i=0 ; i < 16 ; i++ ) - { - logerror("FMOPL.C: sl_tab[%i] = %08x\n", - i, sl_tab[i] ); + /* make sinwave table (total level offet) */ + /* degree 0 = degree 180 = off */ + SIN_TABLE[0] = SIN_TABLE[SIN_ENT /2 ] = &TL_TABLE[EG_ENT - 1]; + for (s = 1;s <= SIN_ENT / 4; s++){ + pom = sin(2 * PI * s / SIN_ENT); /* sin */ + pom = 20 * log10(1 / pom); /* decibel */ + j = int(pom / EG_STEP); /* TL_TABLE steps */ + + /* degree 0 - 90 , degree 180 - 90 : plus section */ + SIN_TABLE[ s] = SIN_TABLE[SIN_ENT / 2 - s] = &TL_TABLE[j]; + /* degree 180 - 270 , degree 360 - 270 : minus section */ + SIN_TABLE[SIN_ENT / 2 + s] = SIN_TABLE[SIN_ENT - s] = &TL_TABLE[TL_MAX + j]; } - for( i=0 ; i < 8 ; i++ ) - { - int j; - logerror("FMOPL.C: ksl_tab[oct=%2i] =",i); - for (j=0; j<16; j++) - { - logerror("%08x ", ksl_tab[i*16+j] ); - } - logerror("\n"); + for (s = 0;s < SIN_ENT; s++) { + SIN_TABLE[SIN_ENT * 1 + s] = s < (SIN_ENT / 2) ? SIN_TABLE[s] : &TL_TABLE[EG_ENT]; + SIN_TABLE[SIN_ENT * 2 + s] = SIN_TABLE[s % (SIN_ENT / 2)]; + SIN_TABLE[SIN_ENT * 3 + s] = (s / (SIN_ENT / 4)) & 1 ? &TL_TABLE[EG_ENT] : SIN_TABLE[SIN_ENT * 2 + s]; } -#endif - - - /* Amplitude modulation: 27 output levels (triangle waveform); 1 level takes one of: 192, 256 or 448 samples */ - /* One entry from LFO_AM_TABLE lasts for 64 samples */ - OPL->lfo_am_inc = (UINT32)((1.0 / 64.0 ) * (1<<LFO_SH) * OPL->freqbase); - - /* Vibrato: 8 output levels (triangle waveform); 1 level takes 1024 samples */ - OPL->lfo_pm_inc = (UINT32)((1.0 / 1024.0) * (1<<LFO_SH) * OPL->freqbase); - /*logerror ("OPL->lfo_am_inc = %8x ; OPL->lfo_pm_inc = %8x\n", OPL->lfo_am_inc, OPL->lfo_pm_inc);*/ - - /* Noise generator: a step takes 1 sample */ - OPL->noise_f = (UINT32)((1.0 / 1.0) * (1<<FREQ_SH) * OPL->freqbase); - - OPL->eg_timer_add = (UINT32)((1<<EG_SH) * OPL->freqbase); - OPL->eg_timer_overflow = ( 1 ) * (1<<EG_SH); - /*logerror("OPLinit eg_timer_add=%8x eg_timer_overflow=%8x\n", OPL->eg_timer_add, OPL->eg_timer_overflow);*/ - -} - -INLINE void FM_KEYON(OPL_SLOT *SLOT, UINT32 key_set) -{ - if( !SLOT->key ) - { - /* restart Phase Generator */ - SLOT->Cnt = 0; - /* phase -> Attack */ - SLOT->state = EG_ATT; + /* envelope counter -> envelope output table */ + for (i=0; i < EG_ENT; i++) { + /* ATTACK curve */ + pom = pow(((double)(EG_ENT - 1 - i) / EG_ENT), 8) * EG_ENT; + /* if( pom >= EG_ENT ) pom = EG_ENT-1; */ + ENV_CURVE[i] = (int)pom; + /* DECAY ,RELEASE curve */ + ENV_CURVE[(EG_DST >> ENV_BITS) + i]= i; } - SLOT->key |= key_set; -} - -INLINE void FM_KEYOFF(OPL_SLOT *SLOT, UINT32 key_clr) -{ - if( SLOT->key ) - { - SLOT->key &= key_clr; - - if( !SLOT->key ) - { - /* phase -> Release */ - if (SLOT->state>EG_REL) - SLOT->state = EG_REL; - } + /* off */ + ENV_CURVE[EG_OFF >> ENV_BITS]= EG_ENT - 1; + /* make LFO ams table */ + for (i=0; i < AMS_ENT; i++) { + pom = (1.0 + sin(2 * PI * i / AMS_ENT)) / 2; /* sin */ + AMS_TABLE[i] = (int)((1.0 / EG_STEP) * pom); /* 1dB */ + AMS_TABLE[AMS_ENT + i] = (int)((4.8 / EG_STEP) * pom); /* 4.8dB */ } -} - -/* update phase increment counter of operator (also update the EG rates if necessary) */ -INLINE void CALC_FCSLOT(OPL_CH *CH,OPL_SLOT *SLOT) -{ - int ksr; - - /* (frequency) phase increment counter */ - SLOT->Incr = CH->fc * SLOT->mul; - ksr = CH->kcode >> SLOT->KSR; - - if( SLOT->ksr != ksr ) - { - SLOT->ksr = ksr; - - /* calculate envelope generator rates */ - if ((SLOT->ar + SLOT->ksr) < 16+62) - { - SLOT->eg_sh_ar = eg_rate_shift [SLOT->ar + SLOT->ksr ]; - SLOT->eg_sel_ar = eg_rate_select[SLOT->ar + SLOT->ksr ]; - } - else - { - SLOT->eg_sh_ar = 0; - SLOT->eg_sel_ar = 13*RATE_STEPS; - } - SLOT->eg_sh_dr = eg_rate_shift [SLOT->dr + SLOT->ksr ]; - SLOT->eg_sel_dr = eg_rate_select[SLOT->dr + SLOT->ksr ]; - SLOT->eg_sh_rr = eg_rate_shift [SLOT->rr + SLOT->ksr ]; - SLOT->eg_sel_rr = eg_rate_select[SLOT->rr + SLOT->ksr ]; + /* make LFO vibrate table */ + for (i=0; i < VIB_ENT; i++) { + /* 100cent = 1seminote = 6% ?? */ + pom = (double)VIB_RATE * 0.06 * sin(2 * PI * i / VIB_ENT); /* +-100sect step */ + VIB_TABLE[i] = (int)(VIB_RATE + (pom * 0.07)); /* +- 7cent */ + VIB_TABLE[VIB_ENT + i] = (int)(VIB_RATE + (pom * 0.14)); /* +-14cent */ } + return 1; } -/* set multi,am,vib,EG-TYP,KSR,mul */ -INLINE void set_mul(FM_OPL *OPL,int slot,int v) -{ - OPL_CH *CH = &OPL->P_CH[slot/2]; - OPL_SLOT *SLOT = &CH->SLOT[slot&1]; - - SLOT->mul = mul_tab[v&0x0f]; - SLOT->KSR = (v&0x10) ? 0 : 2; - SLOT->eg_type = (v&0x20); - SLOT->vib = (v&0x40); - SLOT->AMmask = (v&0x80) ? ~0 : 0; - CALC_FCSLOT(CH,SLOT); -} - -/* set ksl & tl */ -INLINE void set_ksl_tl(FM_OPL *OPL,int slot,int v) -{ - OPL_CH *CH = &OPL->P_CH[slot/2]; - OPL_SLOT *SLOT = &CH->SLOT[slot&1]; - int ksl = v>>6; /* 0 / 1.5 / 3.0 / 6.0 dB/OCT */ - - SLOT->ksl = ksl ? 3-ksl : 31; - SLOT->TL = (v&0x3f)<<(ENV_BITS-1-7); /* 7 bits TL (bit 6 = always 0) */ - - SLOT->TLL = SLOT->TL + (CH->ksl_base>>SLOT->ksl); +static void OPLCloseTable(void) { + free(TL_TABLE); + free(SIN_TABLE); + free(AMS_TABLE); + free(VIB_TABLE); } -/* set attack rate & decay rate */ -INLINE void set_ar_dr(FM_OPL *OPL,int slot,int v) -{ - OPL_CH *CH = &OPL->P_CH[slot/2]; - OPL_SLOT *SLOT = &CH->SLOT[slot&1]; - - SLOT->ar = (v>>4) ? 16 + ((v>>4) <<2) : 0; +/* CSM Key Controll */ +inline void CSMKeyControll(OPL_CH *CH) { + OPL_SLOT *slot1 = &CH->SLOT[SLOT1]; + OPL_SLOT *slot2 = &CH->SLOT[SLOT2]; + /* all key off */ + OPL_KEYOFF(slot1); + OPL_KEYOFF(slot2); + /* total level latch */ + slot1->TLL = slot1->TL + (CH->ksl_base>>slot1->ksl); + slot1->TLL = slot1->TL + (CH->ksl_base>>slot1->ksl); + /* key on */ + CH->op1_out[0] = CH->op1_out[1] = 0; + OPL_KEYON(slot1); + OPL_KEYON(slot2); +} + +/* ---------- opl initialize ---------- */ +static void OPL_initalize(FM_OPL *OPL) { + int fn; - if ((SLOT->ar + SLOT->ksr) < 16+62) - { - SLOT->eg_sh_ar = eg_rate_shift [SLOT->ar + SLOT->ksr ]; - SLOT->eg_sel_ar = eg_rate_select[SLOT->ar + SLOT->ksr ]; - } - else - { - SLOT->eg_sh_ar = 0; - SLOT->eg_sel_ar = 13*RATE_STEPS; + /* frequency base */ + OPL->freqbase = (OPL->rate) ? ((double)OPL->clock / OPL->rate) / 72 : 0; + /* Timer base time */ + OPL->TimerBase = 1.0/((double)OPL->clock / 72.0 ); + /* make time tables */ + init_timetables(OPL, OPL_ARRATE, OPL_DRRATE); + /* make fnumber -> increment counter table */ + for( fn=0; fn < 1024; fn++) { + OPL->FN_TABLE[fn] = (uint)(OPL->freqbase * fn * FREQ_RATE * (1<<7) / 2); } - - SLOT->dr = (v&0x0f)? 16 + ((v&0x0f)<<2) : 0; - SLOT->eg_sh_dr = eg_rate_shift [SLOT->dr + SLOT->ksr ]; - SLOT->eg_sel_dr = eg_rate_select[SLOT->dr + SLOT->ksr ]; + /* LFO freq.table */ + OPL->amsIncr = (int)(OPL->rate ? (double)AMS_ENT * (1 << AMS_SHIFT) / OPL->rate * 3.7 * ((double)OPL->clock/3600000) : 0); + OPL->vibIncr = (int)(OPL->rate ? (double)VIB_ENT * (1 << VIB_SHIFT) / OPL->rate * 6.4 * ((double)OPL->clock/3600000) : 0); } -/* set sustain level & release rate */ -INLINE void set_sl_rr(FM_OPL *OPL,int slot,int v) -{ - OPL_CH *CH = &OPL->P_CH[slot/2]; - OPL_SLOT *SLOT = &CH->SLOT[slot&1]; - - SLOT->sl = sl_tab[ v>>4 ]; - - SLOT->rr = (v&0x0f)? 16 + ((v&0x0f)<<2) : 0; - SLOT->eg_sh_rr = eg_rate_shift [SLOT->rr + SLOT->ksr ]; - SLOT->eg_sel_rr = eg_rate_select[SLOT->rr + SLOT->ksr ]; -} - - -/* write a value v to register r on OPL chip */ -static void OPLWriteReg(FM_OPL *OPL, int r, int v) -{ +/* ---------- write a OPL registers ---------- */ +void OPLWriteReg(FM_OPL *OPL, int r, int v) { OPL_CH *CH; int slot; - UINT32 block_fnum; - - - /* adjust bus to 8 bits */ - r &= 0xff; - v &= 0xff; - -#ifdef LOG_CYM_FILE - if ((cymfile) && (r!=0) ) - { - fputc( (unsigned char)r, cymfile ); - fputc( (unsigned char)v, cymfile ); - } -#endif - - - switch(r&0xe0) - { - case 0x00: /* 00-1f:control */ - switch(r&0x1f) - { - case 0x01: /* waveform select enable */ - if(OPL->type&OPL_TYPE_WAVESEL) - { - OPL->wavesel = v&0x20; - /* do not change the waveform previously selected */ + uint block_fnum; + + switch(r & 0xe0) { + case 0x00: /* 00-1f:controll */ + switch(r & 0x1f) { + case 0x01: + /* wave selector enable */ + if(OPL->type&OPL_TYPE_WAVESEL) { + OPL->wavesel = v & 0x20; + if(!OPL->wavesel) { + /* preset compatible mode */ + int c; + for(c=0; c<OPL->max_ch; c++) { + OPL->P_CH[c].SLOT[SLOT1].wavetable = &SIN_TABLE[0]; + OPL->P_CH[c].SLOT[SLOT2].wavetable = &SIN_TABLE[0]; + } + } } - break; + return; case 0x02: /* Timer 1 */ - OPL->T[0] = (256-v)*4; + OPL->T[0] = (256-v) * 4; break; case 0x03: /* Timer 2 */ - OPL->T[1] = (256-v)*16; - break; + OPL->T[1] = (256-v) * 16; + return; case 0x04: /* IRQ clear / mask and Timer enable */ - if(v&0x80) - { /* IRQ flag clear */ - OPL_STATUS_RESET(OPL,0x7f); + if(v & 0x80) { /* IRQ flag clear */ + OPL_STATUS_RESET(OPL, 0x7f); } - else - { /* set IRQ mask ,timer enable*/ - UINT8 st1 = v&1; - UINT8 st2 = (v>>1)&1; + else { /* set IRQ mask ,timer enable*/ + uint8 st1 = v & 1; + uint8 st2 = (v >> 1) & 1; /* IRQRST,T1MSK,t2MSK,EOSMSK,BRMSK,x,ST2,ST1 */ - OPL_STATUS_RESET(OPL,v&0x78); - OPL_STATUSMASK_SET(OPL,((~v)&0x78)|0x01); + OPL_STATUS_RESET(OPL, v & 0x78); + OPL_STATUSMASK_SET(OPL,((~v) & 0x78) | 0x01); /* timer 2 */ - if(OPL->st[1] != st2) - { - double interval = st2 ? (double)OPL->T[1]*OPL->TimerBase : 0.0; + if(OPL->st[1] != st2) { + double interval = st2 ? (double)OPL->T[1] * OPL->TimerBase : 0.0; OPL->st[1] = st2; - if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam+1,interval); + if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam + 1, interval); } /* timer 1 */ - if(OPL->st[0] != st1) - { - double interval = st1 ? (double)OPL->T[0]*OPL->TimerBase : 0.0; + if(OPL->st[0] != st1) { + double interval = st1 ? (double)OPL->T[0] * OPL->TimerBase : 0.0; OPL->st[0] = st1; - if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam+0,interval); + if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam + 0, interval); } } - break; -#if BUILD_Y8950 - case 0x06: /* Key Board OUT */ - if(OPL->type&OPL_TYPE_KEYBOARD) - { - if(OPL->keyboardhandler_w) - OPL->keyboardhandler_w(OPL->keyboard_param,v); - else - logerror("OPL:write unmapped KEYBOARD port\n"); - } - break; - case 0x07: /* DELTA-T controll : START,REC,MEMDATA,REPT,SPOFF,x,x,RST */ - if(OPL->type&OPL_TYPE_ADPCM) - YM_DELTAT_ADPCM_Write(OPL->deltat,r-0x07,v); - break; -#endif - case 0x08: /* MODE,DELTA-T : CSM,NOTESEL,x,x,smpl,da/ad,64k,rom */ - OPL->mode = v; -#if !(BUILD_Y8950) - break; -#endif - -#if BUILD_Y8950 - v&=0x1f; /* for DELTA-T unit */ - case 0x09: /* START ADD */ - case 0x0a: - case 0x0b: /* STOP ADD */ - case 0x0c: - case 0x0d: /* PRESCALE */ - case 0x0e: - case 0x0f: /* ADPCM data */ - case 0x10: /* DELTA-N */ - case 0x11: /* DELTA-N */ - case 0x12: /* EG-CTRL */ - if(OPL->type&OPL_TYPE_ADPCM) - YM_DELTAT_ADPCM_Write(OPL->deltat,r-0x07,v); - break; -#if 0 - case 0x15: /* DAC data */ - case 0x16: - case 0x17: /* SHIFT */ - break; - case 0x18: /* I/O CTRL (Direction) */ - if(OPL->type&OPL_TYPE_IO) - OPL->portDirection = v&0x0f; - break; - case 0x19: /* I/O DATA */ - if(OPL->type&OPL_TYPE_IO) - { - OPL->portLatch = v; - if(OPL->porthandler_w) - OPL->porthandler_w(OPL->port_param,v&OPL->portDirection); - } - break; - case 0x1a: /* PCM data */ - break; -#endif -#endif + return; } break; - case 0x20: /* am ON, vib ON, ksr, eg_type, mul */ + case 0x20: /* am,vib,ksr,eg type,mul */ slot = slot_array[r&0x1f]; - if(slot < 0) return; + if(slot == -1) + return; set_mul(OPL,slot,v); - break; + return; case 0x40: slot = slot_array[r&0x1f]; - if(slot < 0) return; + if(slot == -1) + return; set_ksl_tl(OPL,slot,v); - break; + return; case 0x60: slot = slot_array[r&0x1f]; - if(slot < 0) return; + if(slot == -1) + return; set_ar_dr(OPL,slot,v); - break; + return; case 0x80: slot = slot_array[r&0x1f]; - if(slot < 0) return; + if(slot == -1) + return; set_sl_rr(OPL,slot,v); - break; + return; case 0xa0: - if (r == 0xbd) /* am depth, vibrato depth, r,bd,sd,tom,tc,hh */ - { - OPL->lfo_am_depth = v & 0x80; - OPL->lfo_pm_depth_range = (v&0x40) ? 8 : 0; - - OPL->rhythm = v&0x3f; - - if(OPL->rhythm&0x20) + switch(r) { + case 0xbd: + /* amsep,vibdep,r,bd,sd,tom,tc,hh */ { + uint8 rkey = OPL->rythm ^ v; + OPL->ams_table = &AMS_TABLE[v & 0x80 ? AMS_ENT : 0]; + OPL->vib_table = &VIB_TABLE[v & 0x40 ? VIB_ENT : 0]; + OPL->rythm = v & 0x3f; + if(OPL->rythm & 0x20) { /* BD key on/off */ - if(v&0x10) - { - FM_KEYON (&OPL->P_CH[6].SLOT[SLOT1], 2); - FM_KEYON (&OPL->P_CH[6].SLOT[SLOT2], 2); - } - else - { - FM_KEYOFF(&OPL->P_CH[6].SLOT[SLOT1],~2); - FM_KEYOFF(&OPL->P_CH[6].SLOT[SLOT2],~2); + if(rkey & 0x10) { + if(v & 0x10) { + OPL->P_CH[6].op1_out[0] = OPL->P_CH[6].op1_out[1] = 0; + OPL_KEYON(&OPL->P_CH[6].SLOT[SLOT1]); + OPL_KEYON(&OPL->P_CH[6].SLOT[SLOT2]); + } + else { + OPL_KEYOFF(&OPL->P_CH[6].SLOT[SLOT1]); + OPL_KEYOFF(&OPL->P_CH[6].SLOT[SLOT2]); + } } - /* HH key on/off */ - if(v&0x01) FM_KEYON (&OPL->P_CH[7].SLOT[SLOT1], 2); - else FM_KEYOFF(&OPL->P_CH[7].SLOT[SLOT1],~2); /* SD key on/off */ - if(v&0x08) FM_KEYON (&OPL->P_CH[7].SLOT[SLOT2], 2); - else FM_KEYOFF(&OPL->P_CH[7].SLOT[SLOT2],~2); - /* TOM key on/off */ - if(v&0x04) FM_KEYON (&OPL->P_CH[8].SLOT[SLOT1], 2); - else FM_KEYOFF(&OPL->P_CH[8].SLOT[SLOT1],~2); + if(rkey & 0x08) { + if(v & 0x08) + OPL_KEYON(&OPL->P_CH[7].SLOT[SLOT2]); + else + OPL_KEYOFF(&OPL->P_CH[7].SLOT[SLOT2]); + }/* TAM key on/off */ + if(rkey & 0x04) { + if(v & 0x04) + OPL_KEYON(&OPL->P_CH[8].SLOT[SLOT1]); + else + OPL_KEYOFF(&OPL->P_CH[8].SLOT[SLOT1]); + } /* TOP-CY key on/off */ - if(v&0x02) FM_KEYON (&OPL->P_CH[8].SLOT[SLOT2], 2); - else FM_KEYOFF(&OPL->P_CH[8].SLOT[SLOT2],~2); + if(rkey & 0x02) { + if(v & 0x02) + OPL_KEYON(&OPL->P_CH[8].SLOT[SLOT2]); + else + OPL_KEYOFF(&OPL->P_CH[8].SLOT[SLOT2]); + } + /* HH key on/off */ + if(rkey & 0x01) { + if(v & 0x01) + OPL_KEYON(&OPL->P_CH[7].SLOT[SLOT1]); + else + OPL_KEYOFF(&OPL->P_CH[7].SLOT[SLOT1]); + } } - else - { - /* BD key off */ - FM_KEYOFF(&OPL->P_CH[6].SLOT[SLOT1],~2); - FM_KEYOFF(&OPL->P_CH[6].SLOT[SLOT2],~2); - /* HH key off */ - FM_KEYOFF(&OPL->P_CH[7].SLOT[SLOT1],~2); - /* SD key off */ - FM_KEYOFF(&OPL->P_CH[7].SLOT[SLOT2],~2); - /* TOM key off */ - FM_KEYOFF(&OPL->P_CH[8].SLOT[SLOT1],~2); - /* TOP-CY off */ - FM_KEYOFF(&OPL->P_CH[8].SLOT[SLOT2],~2); } return; } /* keyon,block,fnum */ - if( (r&0x0f) > 8) return; - CH = &OPL->P_CH[r&0x0f]; - if(!(r&0x10)) - { /* a0-a8 */ - block_fnum = (CH->block_fnum&0x1f00) | v; + if((r & 0x0f) > 8) + return; + CH = &OPL->P_CH[r & 0x0f]; + if(!(r&0x10)) { /* a0-a8 */ + block_fnum = (CH->block_fnum & 0x1f00) | v; } - else - { /* b0-b8 */ - block_fnum = ((v&0x1f)<<8) | (CH->block_fnum&0xff); - - if(v&0x20) - { - FM_KEYON (&CH->SLOT[SLOT1], 1); - FM_KEYON (&CH->SLOT[SLOT2], 1); - } - else - { - FM_KEYOFF(&CH->SLOT[SLOT1],~1); - FM_KEYOFF(&CH->SLOT[SLOT2],~1); + else { /* b0-b8 */ + int keyon = (v >> 5) & 1; + block_fnum = ((v & 0x1f) << 8) | (CH->block_fnum & 0xff); + if(CH->keyon != keyon) { + if((CH->keyon=keyon)) { + CH->op1_out[0] = CH->op1_out[1] = 0; + OPL_KEYON(&CH->SLOT[SLOT1]); + OPL_KEYON(&CH->SLOT[SLOT2]); + } + else { + OPL_KEYOFF(&CH->SLOT[SLOT1]); + OPL_KEYOFF(&CH->SLOT[SLOT2]); + } } } /* update */ - if(CH->block_fnum != block_fnum) - { - UINT8 block = block_fnum >> 10; - + if(CH->block_fnum != block_fnum) { + int blockRv = 7 - (block_fnum >> 10); + int fnum = block_fnum & 0x3ff; CH->block_fnum = block_fnum; - - CH->ksl_base = ksl_tab[block_fnum>>6]; - CH->fc = OPL->fn_tab[block_fnum&0x03ff] >> (7-block); - - /* BLK 2,1,0 bits -> bits 3,2,1 of kcode */ - CH->kcode = (CH->block_fnum&0x1c00)>>9; - - /* the info below is actually opposite to what is stated in the Manuals (verifed on real YM3812) */ - /* if notesel == 0 -> lsb of kcode is bit 10 (MSB) of fnum */ - /* if notesel == 1 -> lsb of kcode is bit 9 (MSB-1) of fnum */ - if (OPL->mode&0x40) - CH->kcode |= (CH->block_fnum&0x100)>>8; /* notesel == 1 */ - else - CH->kcode |= (CH->block_fnum&0x200)>>9; /* notesel == 0 */ - - /* refresh Total Level in both SLOTs of this channel */ - CH->SLOT[SLOT1].TLL = CH->SLOT[SLOT1].TL + (CH->ksl_base>>CH->SLOT[SLOT1].ksl); - CH->SLOT[SLOT2].TLL = CH->SLOT[SLOT2].TL + (CH->ksl_base>>CH->SLOT[SLOT2].ksl); - - /* refresh frequency counter in both SLOTs of this channel */ + CH->ksl_base = KSL_TABLE[block_fnum >> 6]; + CH->fc = OPL->FN_TABLE[fnum] >> blockRv; + CH->kcode = CH->block_fnum >> 9; + if((OPL->mode & 0x40) && CH->block_fnum & 0x100) + CH->kcode |=1; CALC_FCSLOT(CH,&CH->SLOT[SLOT1]); CALC_FCSLOT(CH,&CH->SLOT[SLOT2]); } - break; + return; case 0xc0: /* FB,C */ - if( (r&0x0f) > 8) return; + if((r & 0x0f) > 8) + return; CH = &OPL->P_CH[r&0x0f]; - CH->SLOT[SLOT1].FB = (v>>1)&7 ? ((v>>1)&7) + 7 : 0; - CH->SLOT[SLOT1].CON = v&1; - CH->SLOT[SLOT1].connect1 = CH->SLOT[SLOT1].CON ? &output[0] : &phase_modulation; - break; - case 0xe0: /* waveform select */ - /* simply ignore write to the waveform select register if selecting not enabled in test register */ - if(OPL->wavesel) { - slot = slot_array[r&0x1f]; - if(slot < 0) return; - CH = &OPL->P_CH[slot/2]; - - CH->SLOT[slot&1].wavetable = (v&0x03)*SIN_LEN; + int feedback = (v >> 1) & 7; + CH->FB = feedback ? (8 + 1) - feedback : 0; + CH->CON = v & 1; + set_algorythm(CH); } - break; - } -} - -#ifdef LOG_CYM_FILE -static void cymfile_callback (int n) -{ - if (cymfile) - { - fputc( (unsigned char)0, cymfile ); + return; + case 0xe0: /* wave type */ + slot = slot_array[r & 0x1f]; + if(slot == -1) + return; + CH = &OPL->P_CH[slot / 2]; + if(OPL->wavesel) { + CH->SLOT[slot&1].wavetable = &SIN_TABLE[(v & 0x03) * SIN_ENT]; + } + return; } } -#endif /* lock/unlock for common table */ static int OPL_LockTable(void) { num_lock++; - if(num_lock>1) return 0; - + if(num_lock>1) + return 0; /* first time */ - cur_chip = NULL; /* allocate total level table (128kb space) */ - if( !init_tables() ) - { + if(!OPLOpenTable()) { num_lock--; return -1; } - -#ifdef LOG_CYM_FILE - cymfile = fopen("3812_.cym","wb"); - if (cymfile) - timer_pulse ( TIME_IN_HZ(110), 0, cymfile_callback); /*110 Hz pulse timer*/ - else - logerror("Could not create file 3812_.cym\n"); -#endif - return 0; } -static void OPL_UnLockTable(void) -{ - if(num_lock) num_lock--; - if(num_lock) return; - +static void OPL_UnLockTable(void) { + if(num_lock) + num_lock--; + if(num_lock) + return; /* last time */ - cur_chip = NULL; OPLCloseTable(); +} -#ifdef LOG_CYM_FILE - fclose (cymfile); - cymfile = NULL; -#endif +/*******************************************************************************/ +/* YM3812 local section */ +/*******************************************************************************/ +/* ---------- update one of chip ----------- */ +void YM3812UpdateOne(FM_OPL *OPL, int16 *buffer, int length) { + int i; + int data; + int16 *buf = buffer; + uint amsCnt = OPL->amsCnt; + uint vibCnt = OPL->vibCnt; + uint8 rythm = OPL->rythm & 0x20; + OPL_CH *CH, *R_CH; + + if((void *)OPL != cur_chip){ + cur_chip = (void *)OPL; + /* channel pointers */ + S_CH = OPL->P_CH; + E_CH = &S_CH[9]; + /* rythm slot */ + SLOT7_1 = &S_CH[7].SLOT[SLOT1]; + SLOT7_2 = &S_CH[7].SLOT[SLOT2]; + SLOT8_1 = &S_CH[8].SLOT[SLOT1]; + SLOT8_2 = &S_CH[8].SLOT[SLOT2]; + /* LFO state */ + amsIncr = OPL->amsIncr; + vibIncr = OPL->vibIncr; + ams_table = OPL->ams_table; + vib_table = OPL->vib_table; + } + R_CH = rythm ? &S_CH[6] : E_CH; + for(i = 0; i < length; i++) { + /* channel A channel B channel C */ + /* LFO */ + ams = ams_table[(amsCnt += amsIncr) >> AMS_SHIFT]; + vib = vib_table[(vibCnt += vibIncr) >> VIB_SHIFT]; + outd[0] = 0; + /* FM part */ + for(CH=S_CH; CH < R_CH; CH++) + OPL_CALC_CH(CH); + /* Rythn part */ + if(rythm) + OPL_CALC_RH(S_CH); + /* limit check */ + data = Limit(outd[0], OPL_MAXOUT, OPL_MINOUT); + /* store to sound buffer */ + buf[i] = data >> OPL_OUTSB; + } + + OPL->amsCnt = amsCnt; + OPL->vibCnt = vibCnt; } -static void OPLResetChip(FM_OPL *OPL) -{ +/* ---------- reset a chip ---------- */ +void OPLResetChip(FM_OPL *OPL) { int c,s; int i; - OPL->eg_timer = 0; - OPL->eg_cnt = 0; - - OPL->noise_rng = 1; /* noise shift register */ - OPL->mode = 0; /* normal mode */ - OPL_STATUS_RESET(OPL,0x7f); - + /* reset chip */ + OPL->mode = 0; /* normal mode */ + OPL_STATUS_RESET(OPL, 0x7f); /* reset with register write */ - OPLWriteReg(OPL,0x01,0); /* wavesel disable */ - OPLWriteReg(OPL,0x02,0); /* Timer1 */ - OPLWriteReg(OPL,0x03,0); /* Timer2 */ - OPLWriteReg(OPL,0x04,0); /* IRQ mask clear */ - for(i = 0xff ; i >= 0x20 ; i-- ) OPLWriteReg(OPL,i,0); - - /* reset operator parameters */ - for( c = 0 ; c < 9 ; c++ ) - { + OPLWriteReg(OPL, 0x01,0); /* wabesel disable */ + OPLWriteReg(OPL, 0x02,0); /* Timer1 */ + OPLWriteReg(OPL, 0x03,0); /* Timer2 */ + OPLWriteReg(OPL, 0x04,0); /* IRQ mask clear */ + for(i = 0xff; i >= 0x20; i--) + OPLWriteReg(OPL,i,0); + /* reset OPerator paramater */ + for(c = 0; c < OPL->max_ch ;c++ ) { OPL_CH *CH = &OPL->P_CH[c]; - for(s = 0 ; s < 2 ; s++ ) - { + /* OPL->P_CH[c].PAN = OPN_CENTER; */ + for(s = 0; s < 2; s++ ) { /* wave table */ - CH->SLOT[s].wavetable = 0; - CH->SLOT[s].state = EG_OFF; - CH->SLOT[s].volume = MAX_ATT_INDEX; + CH->SLOT[s].wavetable = &SIN_TABLE[0]; + /* CH->SLOT[s].evm = ENV_MOD_RR; */ + CH->SLOT[s].evc = EG_OFF; + CH->SLOT[s].eve = EG_OFF + 1; + CH->SLOT[s].evs = 0; } } -#if BUILD_Y8950 - if(OPL->type&OPL_TYPE_ADPCM) - { - YM_DELTAT *DELTAT = OPL->deltat; - - DELTAT->freqbase = OPL->freqbase; - DELTAT->output_pointer = &output_deltat[0]; - DELTAT->portshift = 5; - DELTAT->output_range = 1<<23; - YM_DELTAT_ADPCM_Reset(DELTAT,0); - } -#endif } -/* Create one of virtual YM3812 */ -/* 'clock' is chip clock in Hz */ -/* 'rate' is sampling rate */ -static FM_OPL *OPLCreate(int type, int clock, int rate) -{ +/* ---------- Create a virtual YM3812 ---------- */ +/* 'rate' is sampling rate and 'bufsiz' is the size of the */ +FM_OPL *OPLCreate(int type, int clock, int rate) { char *ptr; FM_OPL *OPL; int state_size; + int max_ch = 9; /* normaly 9 channels */ - if (OPL_LockTable() ==-1) return NULL; - - /* calculate OPL state size */ + if( OPL_LockTable() == -1) + return NULL; + /* allocate OPL state space */ state_size = sizeof(FM_OPL); - -#if BUILD_Y8950 - if (type&OPL_TYPE_ADPCM) state_size+= sizeof(YM_DELTAT); -#endif + state_size += sizeof(OPL_CH) * max_ch; /* allocate memory block */ - ptr = (char *)malloc(state_size); - - if (ptr==NULL) + ptr = (char *)calloc(state_size, 1); + if(ptr == NULL) return NULL; /* clear */ - memset(ptr,0,state_size); - - OPL = (FM_OPL *)ptr; - - ptr += sizeof(FM_OPL); - -#if BUILD_Y8950 - if (type&OPL_TYPE_ADPCM) - OPL->deltat = (YM_DELTAT *)ptr; - ptr += sizeof(YM_DELTAT); -#endif + memset(ptr, 0, state_size); + OPL = (FM_OPL *)ptr; ptr += sizeof(FM_OPL); + OPL->P_CH = (OPL_CH *)ptr; ptr += sizeof(OPL_CH) * max_ch; + /* set channel state pointer */ OPL->type = type; OPL->clock = clock; OPL->rate = rate; + OPL->max_ch = max_ch; - /* init global tables */ + /* init grobal tables */ OPL_initalize(OPL); /* reset chip */ @@ -1834,602 +1048,76 @@ static FM_OPL *OPLCreate(int type, int clock, int rate) return OPL; } -/* Destroy one of virtual YM3812 */ -static void OPLDestroy(FM_OPL *OPL) -{ +/* ---------- Destroy one of vietual YM3812 ---------- */ +void OPLDestroy(FM_OPL *OPL) { OPL_UnLockTable(); free(OPL); } -/* Option handlers */ +/* ---------- Option handlers ---------- */ -static void OPLSetTimerHandler(FM_OPL *OPL,OPL_TIMERHANDLER TimerHandler,int channelOffset) -{ +void OPLSetTimerHandler(FM_OPL *OPL, OPL_TIMERHANDLER TimerHandler,int channelOffset) { OPL->TimerHandler = TimerHandler; OPL->TimerParam = channelOffset; } -static void OPLSetIRQHandler(FM_OPL *OPL,OPL_IRQHANDLER IRQHandler,int param) -{ + +void OPLSetIRQHandler(FM_OPL *OPL, OPL_IRQHANDLER IRQHandler, int param) { OPL->IRQHandler = IRQHandler; OPL->IRQParam = param; } -static void OPLSetUpdateHandler(FM_OPL *OPL,OPL_UPDATEHANDLER UpdateHandler,int param) -{ +void OPLSetUpdateHandler(FM_OPL *OPL, OPL_UPDATEHANDLER UpdateHandler,int param) { OPL->UpdateHandler = UpdateHandler; OPL->UpdateParam = param; } -/* YM3812 I/O interface */ -static int OPLWrite(FM_OPL *OPL,int a,int v) -{ - if( !(a&1) ) - { /* address port */ +/* ---------- YM3812 I/O interface ---------- */ +int OPLWrite(FM_OPL *OPL,int a,int v) { + if(!(a & 1)) { /* address port */ OPL->address = v & 0xff; } - else - { /* data port */ - if(OPL->UpdateHandler) OPL->UpdateHandler(OPL->UpdateParam,0); - OPLWriteReg(OPL,OPL->address,v); + else { /* data port */ + if(OPL->UpdateHandler) + OPL->UpdateHandler(OPL->UpdateParam,0); + OPLWriteReg(OPL, OPL->address,v); } - return OPL->status>>7; + return OPL->status >> 7; } -static unsigned char OPLRead(FM_OPL *OPL,int a) -{ - if( !(a&1) ) - { - /* status port */ - return OPL->status & (OPL->statusmask|0x80); +unsigned char OPLRead(FM_OPL *OPL,int a) { + if(!(a & 1)) { /* status port */ + return OPL->status & (OPL->statusmask | 0x80); } - -#if BUILD_Y8950 /* data port */ - switch(OPL->address) - { + switch(OPL->address) { case 0x05: /* KeyBoard IN */ - if(OPL->type&OPL_TYPE_KEYBOARD) - { - if(OPL->keyboardhandler_r) - return OPL->keyboardhandler_r(OPL->keyboard_param); - else - logerror("OPL:read unmapped KEYBOARD port\n"); - } + warning("OPL:read unmapped KEYBOARD port\n"); return 0; -#if 0 - case 0x0f: /* ADPCM-DATA */ - return 0; -#endif case 0x19: /* I/O DATA */ - if(OPL->type&OPL_TYPE_IO) - { - if(OPL->porthandler_r) - return OPL->porthandler_r(OPL->port_param); - else - logerror("OPL:read unmapped I/O port\n"); - } + warning("OPL:read unmapped I/O port\n"); return 0; case 0x1a: /* PCM-DATA */ return 0; } -#endif - - return 0xff; -} - -/* CSM Key Controll */ -INLINE void CSMKeyControll(OPL_CH *CH) -{ - FM_KEYON (&CH->SLOT[SLOT1], 4); - FM_KEYON (&CH->SLOT[SLOT2], 4); - - /* The key off should happen exactly one sample later - not implemented correctly yet */ - - FM_KEYOFF(&CH->SLOT[SLOT1], ~4); - FM_KEYOFF(&CH->SLOT[SLOT2], ~4); + return 0; } - -static int OPLTimerOver(FM_OPL *OPL,int c) -{ - if( c ) - { /* Timer B */ - OPL_STATUS_SET(OPL,0x20); +int OPLTimerOver(FM_OPL *OPL, int c) { + if(c) { /* Timer B */ + OPL_STATUS_SET(OPL, 0x20); } - else - { /* Timer A */ - OPL_STATUS_SET(OPL,0x40); + else { /* Timer A */ + OPL_STATUS_SET(OPL, 0x40); /* CSM mode key,TL controll */ - if( OPL->mode & 0x80 ) - { /* CSM mode total level latch and auto key on */ + if(OPL->mode & 0x80) { /* CSM mode total level latch and auto key on */ int ch; - if(OPL->UpdateHandler) OPL->UpdateHandler(OPL->UpdateParam,0); - for(ch=0; ch<9; ch++) - CSMKeyControll( &OPL->P_CH[ch] ); + if(OPL->UpdateHandler) + OPL->UpdateHandler(OPL->UpdateParam,0); + for(ch = 0; ch < 9; ch++) + CSMKeyControll(&OPL->P_CH[ch]); } } /* reload timer */ - if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam+c,(double)OPL->T[c]*OPL->TimerBase); - return OPL->status>>7; -} - - -#define MAX_OPL_CHIPS 2 - - -#if (BUILD_YM3812) - -static FM_OPL *OPL_YM3812[MAX_OPL_CHIPS]; /* array of pointers to the YM3812's */ -static int YM3812NumChips = 0; /* number of chips */ - -int YM3812Init(int num, int clock, int rate) -{ - int i; - - if (YM3812NumChips) - return -1; /* duplicate init. */ - - YM3812NumChips = num; - - for (i = 0;i < YM3812NumChips; i++) - { - /* emulator create */ - OPL_YM3812[i] = OPLCreate(OPL_TYPE_YM3812,clock,rate); - if(OPL_YM3812[i] == NULL) - { - /* it's really bad - we run out of memeory */ - YM3812NumChips = 0; - return -1; - } - } - - return 0; -} - -void YM3812Shutdown(void) -{ - int i; - - for (i = 0;i < YM3812NumChips; i++) - { - /* emulator shutdown */ - OPLDestroy(OPL_YM3812[i]); - OPL_YM3812[i] = NULL; - } - YM3812NumChips = 0; -} -void YM3812ResetChip(int which) -{ - OPLResetChip(OPL_YM3812[which]); -} - -int YM3812Write(int which, int a, int v) -{ - return OPLWrite(OPL_YM3812[which], a, v); -} - -unsigned char YM3812Read(int which, int a) -{ - /* YM3812 always returns bit2 and bit1 in HIGH state */ - return OPLRead(OPL_YM3812[which], a) | 0x06 ; -} -int YM3812TimerOver(int which, int c) -{ - return OPLTimerOver(OPL_YM3812[which], c); -} - -void YM3812SetTimerHandler(int which, OPL_TIMERHANDLER TimerHandler, int channelOffset) -{ - OPLSetTimerHandler(OPL_YM3812[which], TimerHandler, channelOffset); -} -void YM3812SetIRQHandler(int which,OPL_IRQHANDLER IRQHandler,int param) -{ - OPLSetIRQHandler(OPL_YM3812[which], IRQHandler, param); -} -void YM3812SetUpdateHandler(int which,OPL_UPDATEHANDLER UpdateHandler,int param) -{ - OPLSetUpdateHandler(OPL_YM3812[which], UpdateHandler, param); + if (OPL->TimerHandler) + (OPL->TimerHandler)(OPL->TimerParam + c, (double)OPL->T[c] * OPL->TimerBase); + return OPL->status >> 7; } - - -/* -** Generate samples for one of the YM3812's -** -** 'which' is the virtual YM3812 number -** '*buffer' is the output buffer pointer -** 'length' is the number of samples that should be generated -*/ -void YM3812UpdateOne(int which, INT16 *buffer, int length) -{ - FM_OPL *OPL = OPL_YM3812[which]; - UINT8 rhythm = OPL->rhythm&0x20; - OPLSAMPLE *buf = buffer; - int i; - - if( (void *)OPL != cur_chip ){ - cur_chip = (void *)OPL; - /* rhythm slots */ - SLOT7_1 = &OPL->P_CH[7].SLOT[SLOT1]; - SLOT7_2 = &OPL->P_CH[7].SLOT[SLOT2]; - SLOT8_1 = &OPL->P_CH[8].SLOT[SLOT1]; - SLOT8_2 = &OPL->P_CH[8].SLOT[SLOT2]; - } - for( i=0; i < length ; i++ ) - { - int lt; - - output[0] = 0; - - advance_lfo(OPL); - - /* FM part */ - OPL_CALC_CH(&OPL->P_CH[0]); - OPL_CALC_CH(&OPL->P_CH[1]); - OPL_CALC_CH(&OPL->P_CH[2]); - OPL_CALC_CH(&OPL->P_CH[3]); - OPL_CALC_CH(&OPL->P_CH[4]); - OPL_CALC_CH(&OPL->P_CH[5]); - - if(!rhythm) - { - OPL_CALC_CH(&OPL->P_CH[6]); - OPL_CALC_CH(&OPL->P_CH[7]); - OPL_CALC_CH(&OPL->P_CH[8]); - } - else /* Rhythm part */ - { - OPL_CALC_RH(&OPL->P_CH[0], (OPL->noise_rng>>0)&1 ); - } - - lt = output[0]; - - lt >>= FINAL_SH; - - /* limit check */ - lt = limit( lt , MAXOUT, MINOUT ); - - #ifdef SAVE_SAMPLE - SAVE_ALL_CHANNELS - #endif - - /* store to sound buffer */ - buf[i] = lt; - - advancex(OPL); - } - -} -#endif /* BUILD_YM3812 */ - - - -#if (BUILD_YM3526) - -static FM_OPL *OPL_YM3526[MAX_OPL_CHIPS]; /* array of pointers to the YM3526's */ -static int YM3526NumChips = 0; /* number of chips */ - -int YM3526Init(int num, int clock, int rate) -{ - int i; - - if (YM3526NumChips) - return -1; /* duplicate init. */ - - YM3526NumChips = num; - - for (i = 0;i < YM3526NumChips; i++) - { - /* emulator create */ - OPL_YM3526[i] = OPLCreate(OPL_TYPE_YM3526,clock,rate); - if(OPL_YM3526[i] == NULL) - { - /* it's really bad - we run out of memeory */ - YM3526NumChips = 0; - return -1; - } - } - - return 0; -} - -void YM3526Shutdown(void) -{ - int i; - - for (i = 0;i < YM3526NumChips; i++) - { - /* emulator shutdown */ - OPLDestroy(OPL_YM3526[i]); - OPL_YM3526[i] = NULL; - } - YM3526NumChips = 0; -} -void YM3526ResetChip(int which) -{ - OPLResetChip(OPL_YM3526[which]); -} - -int YM3526Write(int which, int a, int v) -{ - return OPLWrite(OPL_YM3526[which], a, v); -} - -unsigned char YM3526Read(int which, int a) -{ - return OPLRead(OPL_YM3526[which], a); -} -int YM3526TimerOver(int which, int c) -{ - return OPLTimerOver(OPL_YM3526[which], c); -} - -void YM3526SetTimerHandler(int which, OPL_TIMERHANDLER TimerHandler, int channelOffset) -{ - OPLSetTimerHandler(OPL_YM3526[which], TimerHandler, channelOffset); -} -void YM3526SetIRQHandler(int which,OPL_IRQHANDLER IRQHandler,int param) -{ - OPLSetIRQHandler(OPL_YM3526[which], IRQHandler, param); -} -void YM3526SetUpdateHandler(int which,OPL_UPDATEHANDLER UpdateHandler,int param) -{ - OPLSetUpdateHandler(OPL_YM3526[which], UpdateHandler, param); -} - - -/* -** Generate samples for one of the YM3526's -** -** 'which' is the virtual YM3526 number -** '*buffer' is the output buffer pointer -** 'length' is the number of samples that should be generated -*/ -void YM3526UpdateOne(int which, INT16 *buffer, int length) -{ - FM_OPL *OPL = OPL_YM3526[which]; - UINT8 rhythm = OPL->rhythm&0x20; - OPLSAMPLE *buf = buffer; - int i; - - if( (void *)OPL != cur_chip ){ - cur_chip = (void *)OPL; - /* rhythm slots */ - SLOT7_1 = &OPL->P_CH[7].SLOT[SLOT1]; - SLOT7_2 = &OPL->P_CH[7].SLOT[SLOT2]; - SLOT8_1 = &OPL->P_CH[8].SLOT[SLOT1]; - SLOT8_2 = &OPL->P_CH[8].SLOT[SLOT2]; - } - for( i=0; i < length ; i++ ) - { - int lt; - - output[0] = 0; - - advance_lfo(OPL); - - /* FM part */ - OPL_CALC_CH(&OPL->P_CH[0]); - OPL_CALC_CH(&OPL->P_CH[1]); - OPL_CALC_CH(&OPL->P_CH[2]); - OPL_CALC_CH(&OPL->P_CH[3]); - OPL_CALC_CH(&OPL->P_CH[4]); - OPL_CALC_CH(&OPL->P_CH[5]); - - if(!rhythm) - { - OPL_CALC_CH(&OPL->P_CH[6]); - OPL_CALC_CH(&OPL->P_CH[7]); - OPL_CALC_CH(&OPL->P_CH[8]); - } - else /* Rhythm part */ - { - OPL_CALC_RH(&OPL->P_CH[0], (OPL->noise_rng>>0)&1 ); - } - - lt = output[0]; - - lt >>= FINAL_SH; - - /* limit check */ - lt = limit( lt , MAXOUT, MINOUT ); - - #ifdef SAVE_SAMPLE - SAVE_ALL_CHANNELS - #endif - - /* store to sound buffer */ - buf[i] = lt; - - advance(OPL); - } - -} -#endif /* BUILD_YM3526 */ - - - - -#if BUILD_Y8950 - -static FM_OPL *OPL_Y8950[MAX_OPL_CHIPS]; /* array of pointers to the Y8950's */ -static int Y8950NumChips = 0; /* number of chips */ - -int Y8950Init(int num, int clock, int rate) -{ - int i; - - if (Y8950NumChips) - return -1; /* duplicate init. */ - - Y8950NumChips = num; - - for (i = 0;i < Y8950NumChips; i++) - { - /* emulator create */ - OPL_Y8950[i] = OPLCreate(OPL_TYPE_Y8950,clock,rate); - if(OPL_Y8950[i] == NULL) - { - /* it's really bad - we run out of memeory */ - Y8950NumChips = 0; - return -1; - } - } - - return 0; -} - -void Y8950Shutdown(void) -{ - int i; - - for (i = 0;i < Y8950NumChips; i++) - { - /* emulator shutdown */ - OPLDestroy(OPL_Y8950[i]); - OPL_Y8950[i] = NULL; - } - Y8950NumChips = 0; -} -void Y8950ResetChip(int which) -{ - OPLResetChip(OPL_Y8950[which]); -} - -int Y8950Write(int which, int a, int v) -{ - return OPLWrite(OPL_Y8950[which], a, v); -} - -unsigned char Y8950Read(int which, int a) -{ - return OPLRead(OPL_Y8950[which], a); -} -int Y8950TimerOver(int which, int c) -{ - return OPLTimerOver(OPL_Y8950[which], c); -} - -void Y8950SetTimerHandler(int which, OPL_TIMERHANDLER TimerHandler, int channelOffset) -{ - OPLSetTimerHandler(OPL_Y8950[which], TimerHandler, channelOffset); -} -void Y8950SetIRQHandler(int which,OPL_IRQHANDLER IRQHandler,int param) -{ - OPLSetIRQHandler(OPL_Y8950[which], IRQHandler, param); -} -void Y8950SetUpdateHandler(int which,OPL_UPDATEHANDLER UpdateHandler,int param) -{ - OPLSetUpdateHandler(OPL_Y8950[which], UpdateHandler, param); -} - -void Y8950SetDeltaTMemory(int which, void * deltat_rom, int deltat_rom_size ) -{ - FM_OPL *OPL = OPL_Y8950[which]; - OPL->deltat->memory = (UINT8 *)(deltat_rom); - OPL->deltat->memory_size = deltat_rom_size; -} - -/* -** Generate samples for one of the Y8950's -** -** 'which' is the virtual Y8950 number -** '*buffer' is the output buffer pointer -** 'length' is the number of samples that should be generated -*/ -void Y8950UpdateOne(int which, INT16 *buffer, int length) -{ - int i; - FM_OPL *OPL = OPL_Y8950[which]; - UINT8 rhythm = OPL->rhythm&0x20; - YM_DELTAT *DELTAT = OPL->deltat; - OPLSAMPLE *buf = buffer; - - /* setup DELTA-T unit */ - YM_DELTAT_DECODE_PRESET(DELTAT); - - if( (void *)OPL != cur_chip ){ - cur_chip = (void *)OPL; - /* rhythm slots */ - SLOT7_1 = &OPL->P_CH[7].SLOT[SLOT1]; - SLOT7_2 = &OPL->P_CH[7].SLOT[SLOT2]; - SLOT8_1 = &OPL->P_CH[8].SLOT[SLOT1]; - SLOT8_2 = &OPL->P_CH[8].SLOT[SLOT2]; - - } - for( i=0; i < length ; i++ ) - { - int lt; - - output[0] = 0; - output_deltat[0] = 0; - - advance_lfo(OPL); - - /* deltaT ADPCM */ - if( DELTAT->portstate ) - YM_DELTAT_ADPCM_CALC(DELTAT); - - /* FM part */ - OPL_CALC_CH(&OPL->P_CH[0]); - OPL_CALC_CH(&OPL->P_CH[1]); - OPL_CALC_CH(&OPL->P_CH[2]); - OPL_CALC_CH(&OPL->P_CH[3]); - OPL_CALC_CH(&OPL->P_CH[4]); - OPL_CALC_CH(&OPL->P_CH[5]); - - if(!rhythm) - { - OPL_CALC_CH(&OPL->P_CH[6]); - OPL_CALC_CH(&OPL->P_CH[7]); - OPL_CALC_CH(&OPL->P_CH[8]); - } - else /* Rhythm part */ - { - OPL_CALC_RH(&OPL->P_CH[0], (OPL->noise_rng>>0)&1 ); - } - - lt = output[0] + (output_deltat[0]>>11); - - lt >>= FINAL_SH; - - /* limit check */ - lt = limit( lt , MAXOUT, MINOUT ); - - #ifdef SAVE_SAMPLE - SAVE_ALL_CHANNELS - #endif - - /* store to sound buffer */ - buf[i] = lt; - - advance(OPL); - } - - /* deltaT START flag */ - if( !DELTAT->portstate ) - OPL->status &= 0xfe; - - if( DELTAT->eos ) //AT: set bit 4 of OPL status register on EOS - { - DELTAT->eos = 0; - OPL->status |= 0x10; - } -} - -void Y8950SetPortHandler(int which,OPL_PORTHANDLER_W PortHandler_w,OPL_PORTHANDLER_R PortHandler_r,int param) -{ - FM_OPL *OPL = OPL_Y8950[which]; - OPL->porthandler_w = PortHandler_w; - OPL->porthandler_r = PortHandler_r; - OPL->port_param = param; -} - -void Y8950SetKeyboardHandler(int which,OPL_PORTHANDLER_W KeyboardHandler_w,OPL_PORTHANDLER_R KeyboardHandler_r,int param) -{ - FM_OPL *OPL = OPL_Y8950[which]; - OPL->keyboardhandler_w = KeyboardHandler_w; - OPL->keyboardhandler_r = KeyboardHandler_r; - OPL->keyboard_param = param; -} - -#endif - |