3 ** File: fmopl.c -- software implementation of FM sound generator
5 ** Copyright (C) 1999,2000 Tatsuyuki Satoh , MultiArcadeMachineEmurator development
17 /* This version of fmopl.c is a fork of the MAME one, relicensed under the LGPL.
19 * This library is free software; you can redistribute it and/or
20 * modify it under the terms of the GNU Lesser General Public
21 * License as published by the Free Software Foundation; either
22 * version 2.1 of the License, or (at your option) any later version.
24 * This library is distributed in the hope that it will be useful,
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27 * Lesser General Public License for more details.
29 * You should have received a copy of the GNU Lesser General Public
30 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
33 #define INLINE static inline
41 //#include "driver.h" /* use M.A.M.E. */
45 #define PI 3.14159265358979323846
49 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
52 /* -------------------- for debug --------------------- */
53 /* #define OPL_OUTPUT_LOG */
55 static FILE *opl_dbg_fp
= NULL
;
56 static FM_OPL
*opl_dbg_opl
[16];
57 static int opl_dbg_maxchip
,opl_dbg_chip
;
60 /* -------------------- preliminary define section --------------------- */
61 /* attack/decay rate time rate */
62 #define OPL_ARRATE 141280 /* RATE 4 = 2826.24ms @ 3.6MHz */
63 #define OPL_DRRATE 1956000 /* RATE 4 = 39280.64ms @ 3.6MHz */
65 #define DELTAT_MIXING_LEVEL (1) /* DELTA-T ADPCM MIXING LEVEL */
67 #define FREQ_BITS 24 /* frequency turn */
69 /* counter bits = 20 , octerve 7 */
70 #define FREQ_RATE (1<<(FREQ_BITS-20))
71 #define TL_BITS (FREQ_BITS+2)
73 /* final output shift , limit minimum and maximum */
74 #define OPL_OUTSB (TL_BITS+3-16) /* OPL output final shift 16bit */
75 #define OPL_MAXOUT (0x7fff<<OPL_OUTSB)
76 #define OPL_MINOUT (-0x8000<<OPL_OUTSB)
78 /* -------------------- quality selection --------------------- */
81 /* used static memory = SIN_ENT * 4 (byte) */
84 /* output level entries (envelope,sinwave) */
85 /* envelope counter lower bits */
87 /* envelope output entries */
89 /* used dynamic memory = EG_ENT*4*4(byte)or EG_ENT*6*4(byte) */
90 /* used static memory = EG_ENT*4 (byte) */
92 #define EG_OFF ((2*EG_ENT)<<ENV_BITS) /* OFF */
94 #define EG_DST (EG_ENT<<ENV_BITS) /* DECAY START */
96 #define EG_AST 0 /* ATTACK START */
98 #define EG_STEP (96.0/EG_ENT) /* OPL is 0.1875 dB step */
100 /* LFO table entries */
102 #define VIB_SHIFT (32-9)
104 #define AMS_SHIFT (32-9)
108 /* -------------------- local defines , macros --------------------- */
110 /* register number to channel number , slot offset */
115 #define ENV_MOD_RR 0x00
116 #define ENV_MOD_DR 0x01
117 #define ENV_MOD_AR 0x02
119 /* -------------------- tables --------------------- */
120 static const int slot_array
[32]=
122 0, 2, 4, 1, 3, 5,-1,-1,
123 6, 8,10, 7, 9,11,-1,-1,
124 12,14,16,13,15,17,-1,-1,
125 -1,-1,-1,-1,-1,-1,-1,-1
128 /* key scale level */
129 /* table is 3dB/OCT , DV converts this in TL step at 6dB/OCT */
130 #define DV (EG_STEP/2)
131 static const UINT32 KSL_TABLE
[8*16]=
134 0.000/DV
, 0.000/DV
, 0.000/DV
, 0.000/DV
,
135 0.000/DV
, 0.000/DV
, 0.000/DV
, 0.000/DV
,
136 0.000/DV
, 0.000/DV
, 0.000/DV
, 0.000/DV
,
137 0.000/DV
, 0.000/DV
, 0.000/DV
, 0.000/DV
,
139 0.000/DV
, 0.000/DV
, 0.000/DV
, 0.000/DV
,
140 0.000/DV
, 0.000/DV
, 0.000/DV
, 0.000/DV
,
141 0.000/DV
, 0.750/DV
, 1.125/DV
, 1.500/DV
,
142 1.875/DV
, 2.250/DV
, 2.625/DV
, 3.000/DV
,
144 0.000/DV
, 0.000/DV
, 0.000/DV
, 0.000/DV
,
145 0.000/DV
, 1.125/DV
, 1.875/DV
, 2.625/DV
,
146 3.000/DV
, 3.750/DV
, 4.125/DV
, 4.500/DV
,
147 4.875/DV
, 5.250/DV
, 5.625/DV
, 6.000/DV
,
149 0.000/DV
, 0.000/DV
, 0.000/DV
, 1.875/DV
,
150 3.000/DV
, 4.125/DV
, 4.875/DV
, 5.625/DV
,
151 6.000/DV
, 6.750/DV
, 7.125/DV
, 7.500/DV
,
152 7.875/DV
, 8.250/DV
, 8.625/DV
, 9.000/DV
,
154 0.000/DV
, 0.000/DV
, 3.000/DV
, 4.875/DV
,
155 6.000/DV
, 7.125/DV
, 7.875/DV
, 8.625/DV
,
156 9.000/DV
, 9.750/DV
,10.125/DV
,10.500/DV
,
157 10.875/DV
,11.250/DV
,11.625/DV
,12.000/DV
,
159 0.000/DV
, 3.000/DV
, 6.000/DV
, 7.875/DV
,
160 9.000/DV
,10.125/DV
,10.875/DV
,11.625/DV
,
161 12.000/DV
,12.750/DV
,13.125/DV
,13.500/DV
,
162 13.875/DV
,14.250/DV
,14.625/DV
,15.000/DV
,
164 0.000/DV
, 6.000/DV
, 9.000/DV
,10.875/DV
,
165 12.000/DV
,13.125/DV
,13.875/DV
,14.625/DV
,
166 15.000/DV
,15.750/DV
,16.125/DV
,16.500/DV
,
167 16.875/DV
,17.250/DV
,17.625/DV
,18.000/DV
,
169 0.000/DV
, 9.000/DV
,12.000/DV
,13.875/DV
,
170 15.000/DV
,16.125/DV
,16.875/DV
,17.625/DV
,
171 18.000/DV
,18.750/DV
,19.125/DV
,19.500/DV
,
172 19.875/DV
,20.250/DV
,20.625/DV
,21.000/DV
176 /* sustain lebel table (3db per step) */
177 /* 0 - 15: 0, 3, 6, 9,12,15,18,21,24,27,30,33,36,39,42,93 (dB)*/
178 #define SC(db) (db*((3/EG_STEP)*(1<<ENV_BITS)))+EG_DST
179 static const INT32 SL_TABLE
[16]={
180 SC( 0),SC( 1),SC( 2),SC(3 ),SC(4 ),SC(5 ),SC(6 ),SC( 7),
181 SC( 8),SC( 9),SC(10),SC(11),SC(12),SC(13),SC(14),SC(31)
185 #define TL_MAX (EG_ENT*2) /* limit(tl + ksr + envelope) + sinwave */
186 /* TotalLevel : 48 24 12 6 3 1.5 0.75 (dB) */
187 /* TL_TABLE[ 0 to TL_MAX ] : plus section */
188 /* TL_TABLE[ TL_MAX to TL_MAX+TL_MAX-1 ] : minus section */
189 static INT32
*TL_TABLE
;
191 /* pointers to TL_TABLE with sinwave output offset */
192 static INT32
**SIN_TABLE
;
195 static INT32
*AMS_TABLE
;
196 static INT32
*VIB_TABLE
;
198 /* envelope output curve table */
199 /* attack + decay + OFF */
200 static INT32 ENV_CURVE
[2*EG_ENT
+1];
204 static const UINT32 MUL_TABLE
[16]= {
205 /* 1/2, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15 */
206 0.50*ML
, 1.00*ML
, 2.00*ML
, 3.00*ML
, 4.00*ML
, 5.00*ML
, 6.00*ML
, 7.00*ML
,
207 8.00*ML
, 9.00*ML
,10.00*ML
,10.00*ML
,12.00*ML
,12.00*ML
,15.00*ML
,15.00*ML
211 /* dummy attack / decay rate ( when rate == 0 ) */
212 static INT32 RATE_0
[16]=
213 {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
215 /* -------------------- static state --------------------- */
217 /* lock level of common table */
218 static int num_lock
= 0;
221 static void *cur_chip
= NULL
; /* current chip point */
222 /* currenct chip state */
223 /* static OPLSAMPLE *bufL,*bufR; */
226 OPL_SLOT
*SLOT7_1
,*SLOT7_2
,*SLOT8_1
,*SLOT8_2
;
228 static INT32 outd
[1];
233 static INT32 amsIncr
;
234 static INT32 vibIncr
;
235 static INT32 feedback2
; /* connect for SLOT 2 */
237 /* log output level */
238 #define LOG_ERR 3 /* ERROR */
239 #define LOG_WAR 2 /* WARNING */
240 #define LOG_INF 1 /* INFORMATION */
242 //#define LOG_LEVEL LOG_INF
243 #define LOG_LEVEL LOG_ERR
245 //#define LOG(n,x) if( (n)>=LOG_LEVEL ) logerror x
248 /* --------------------- subroutines --------------------- */
250 INLINE
int Limit( int val
, int max
, int min
) {
253 else if ( val
< min
)
259 /* status set and IRQ handling */
260 INLINE
void OPL_STATUS_SET(FM_OPL
*OPL
,int flag
)
262 /* set status flag */
264 if(!(OPL
->status
& 0x80))
266 if(OPL
->status
& OPL
->statusmask
)
269 /* callback user interrupt handler (IRQ is OFF to ON) */
270 if(OPL
->IRQHandler
) (OPL
->IRQHandler
)(OPL
->IRQParam
,1);
275 /* status reset and IRQ handling */
276 INLINE
void OPL_STATUS_RESET(FM_OPL
*OPL
,int flag
)
278 /* reset status flag */
280 if((OPL
->status
& 0x80))
282 if (!(OPL
->status
& OPL
->statusmask
) )
285 /* callback user interrupt handler (IRQ is ON to OFF) */
286 if(OPL
->IRQHandler
) (OPL
->IRQHandler
)(OPL
->IRQParam
,0);
292 INLINE
void OPL_STATUSMASK_SET(FM_OPL
*OPL
,int flag
)
294 OPL
->statusmask
= flag
;
295 /* IRQ handling check */
296 OPL_STATUS_SET(OPL
,0);
297 OPL_STATUS_RESET(OPL
,0);
300 /* ----- key on ----- */
301 INLINE
void OPL_KEYON(OPL_SLOT
*SLOT
)
303 /* sin wave restart */
306 SLOT
->evm
= ENV_MOD_AR
;
307 SLOT
->evs
= SLOT
->evsa
;
311 /* ----- key off ----- */
312 INLINE
void OPL_KEYOFF(OPL_SLOT
*SLOT
)
314 if( SLOT
->evm
> ENV_MOD_RR
)
316 /* set envelope counter from envleope output */
317 SLOT
->evm
= ENV_MOD_RR
;
318 if( !(SLOT
->evc
&EG_DST
) )
319 //SLOT->evc = (ENV_CURVE[SLOT->evc>>ENV_BITS]<<ENV_BITS) + EG_DST;
322 SLOT
->evs
= SLOT
->evsr
;
326 /* ---------- calcrate Envelope Generator & Phase Generator ---------- */
327 /* return : envelope output */
328 INLINE UINT32
OPL_CALC_SLOT( OPL_SLOT
*SLOT
)
330 /* calcrate envelope generator */
331 if( (SLOT
->evc
+=SLOT
->evs
) >= SLOT
->eve
)
334 case ENV_MOD_AR
: /* ATTACK -> DECAY1 */
336 SLOT
->evm
= ENV_MOD_DR
;
338 SLOT
->eve
= SLOT
->SL
;
339 SLOT
->evs
= SLOT
->evsd
;
341 case ENV_MOD_DR
: /* DECAY -> SL or RR */
342 SLOT
->evc
= SLOT
->SL
;
350 SLOT
->evm
= ENV_MOD_RR
;
351 SLOT
->evs
= SLOT
->evsr
;
354 case ENV_MOD_RR
: /* RR -> OFF */
356 SLOT
->eve
= EG_OFF
+1;
361 /* calcrate envelope */
362 return SLOT
->TLL
+ENV_CURVE
[SLOT
->evc
>>ENV_BITS
]+(SLOT
->ams
? ams
: 0);
365 /* set algorythm connection */
366 static void set_algorythm( OPL_CH
*CH
)
368 INT32
*carrier
= &outd
[0];
369 CH
->connect1
= CH
->CON
? carrier
: &feedback2
;
370 CH
->connect2
= carrier
;
373 /* ---------- frequency counter for operater update ---------- */
374 INLINE
void CALC_FCSLOT(OPL_CH
*CH
,OPL_SLOT
*SLOT
)
378 /* frequency step counter */
379 SLOT
->Incr
= CH
->fc
* SLOT
->mul
;
380 ksr
= CH
->kcode
>> SLOT
->KSR
;
382 if( SLOT
->ksr
!= ksr
)
385 /* attack , decay rate recalcration */
386 SLOT
->evsa
= SLOT
->AR
[ksr
];
387 SLOT
->evsd
= SLOT
->DR
[ksr
];
388 SLOT
->evsr
= SLOT
->RR
[ksr
];
390 SLOT
->TLL
= SLOT
->TL
+ (CH
->ksl_base
>>SLOT
->ksl
);
393 /* set multi,am,vib,EG-TYP,KSR,mul */
394 INLINE
void set_mul(FM_OPL
*OPL
,int slot
,int v
)
396 OPL_CH
*CH
= &OPL
->P_CH
[slot
/2];
397 OPL_SLOT
*SLOT
= &CH
->SLOT
[slot
&1];
399 SLOT
->mul
= MUL_TABLE
[v
&0x0f];
400 SLOT
->KSR
= (v
&0x10) ? 0 : 2;
401 SLOT
->eg_typ
= (v
&0x20)>>5;
402 SLOT
->vib
= (v
&0x40);
403 SLOT
->ams
= (v
&0x80);
404 CALC_FCSLOT(CH
,SLOT
);
408 INLINE
void set_ksl_tl(FM_OPL
*OPL
,int slot
,int v
)
410 OPL_CH
*CH
= &OPL
->P_CH
[slot
/2];
411 OPL_SLOT
*SLOT
= &CH
->SLOT
[slot
&1];
412 int ksl
= v
>>6; /* 0 / 1.5 / 3 / 6 db/OCT */
414 SLOT
->ksl
= ksl
? 3-ksl
: 31;
415 SLOT
->TL
= (v
&0x3f)*(0.75/EG_STEP
); /* 0.75db step */
417 if( !(OPL
->mode
&0x80) )
418 { /* not CSM latch total level */
419 SLOT
->TLL
= SLOT
->TL
+ (CH
->ksl_base
>>SLOT
->ksl
);
423 /* set attack rate & decay rate */
424 INLINE
void set_ar_dr(FM_OPL
*OPL
,int slot
,int v
)
426 OPL_CH
*CH
= &OPL
->P_CH
[slot
/2];
427 OPL_SLOT
*SLOT
= &CH
->SLOT
[slot
&1];
431 SLOT
->AR
= ar
? &OPL
->AR_TABLE
[ar
<<2] : RATE_0
;
432 SLOT
->evsa
= SLOT
->AR
[SLOT
->ksr
];
433 if( SLOT
->evm
== ENV_MOD_AR
) SLOT
->evs
= SLOT
->evsa
;
435 SLOT
->DR
= dr
? &OPL
->DR_TABLE
[dr
<<2] : RATE_0
;
436 SLOT
->evsd
= SLOT
->DR
[SLOT
->ksr
];
437 if( SLOT
->evm
== ENV_MOD_DR
) SLOT
->evs
= SLOT
->evsd
;
440 /* set sustain level & release rate */
441 INLINE
void set_sl_rr(FM_OPL
*OPL
,int slot
,int v
)
443 OPL_CH
*CH
= &OPL
->P_CH
[slot
/2];
444 OPL_SLOT
*SLOT
= &CH
->SLOT
[slot
&1];
448 SLOT
->SL
= SL_TABLE
[sl
];
449 if( SLOT
->evm
== ENV_MOD_DR
) SLOT
->eve
= SLOT
->SL
;
450 SLOT
->RR
= &OPL
->DR_TABLE
[rr
<<2];
451 SLOT
->evsr
= SLOT
->RR
[SLOT
->ksr
];
452 if( SLOT
->evm
== ENV_MOD_RR
) SLOT
->evs
= SLOT
->evsr
;
455 /* operator output calcrator */
456 #define OP_OUT(slot,env,con) slot->wavetable[((slot->Cnt+con)/(0x1000000/SIN_ENT))&(SIN_ENT-1)][env]
457 /* ---------- calcrate one of channel ---------- */
458 INLINE
void OPL_CALC_CH( OPL_CH
*CH
)
465 SLOT
= &CH
->SLOT
[SLOT1
];
466 env_out
=OPL_CALC_SLOT(SLOT
);
467 if( env_out
< EG_ENT
-1 )
470 if(SLOT
->vib
) SLOT
->Cnt
+= (SLOT
->Incr
*vib
/VIB_RATE
);
471 else SLOT
->Cnt
+= SLOT
->Incr
;
475 int feedback1
= (CH
->op1_out
[0]+CH
->op1_out
[1])>>CH
->FB
;
476 CH
->op1_out
[1] = CH
->op1_out
[0];
477 *CH
->connect1
+= CH
->op1_out
[0] = OP_OUT(SLOT
,env_out
,feedback1
);
481 *CH
->connect1
+= OP_OUT(SLOT
,env_out
,0);
485 CH
->op1_out
[1] = CH
->op1_out
[0];
489 SLOT
= &CH
->SLOT
[SLOT2
];
490 env_out
=OPL_CALC_SLOT(SLOT
);
491 if( env_out
< EG_ENT
-1 )
494 if(SLOT
->vib
) SLOT
->Cnt
+= (SLOT
->Incr
*vib
/VIB_RATE
);
495 else SLOT
->Cnt
+= SLOT
->Incr
;
497 outd
[0] += OP_OUT(SLOT
,env_out
, feedback2
);
501 /* ---------- calcrate rythm block ---------- */
502 #define WHITE_NOISE_db 6.0
503 INLINE
void OPL_CALC_RH( OPL_CH
*CH
)
505 UINT32 env_tam
,env_sd
,env_top
,env_hh
;
506 int whitenoise
= (rand()&1)*(WHITE_NOISE_db
/EG_STEP
);
512 /* BD : same as FM serial mode and output level is large */
515 SLOT
= &CH
[6].SLOT
[SLOT1
];
516 env_out
=OPL_CALC_SLOT(SLOT
);
517 if( env_out
< EG_ENT
-1 )
520 if(SLOT
->vib
) SLOT
->Cnt
+= (SLOT
->Incr
*vib
/VIB_RATE
);
521 else SLOT
->Cnt
+= SLOT
->Incr
;
525 int feedback1
= (CH
[6].op1_out
[0]+CH
[6].op1_out
[1])>>CH
[6].FB
;
526 CH
[6].op1_out
[1] = CH
[6].op1_out
[0];
527 feedback2
= CH
[6].op1_out
[0] = OP_OUT(SLOT
,env_out
,feedback1
);
531 feedback2
= OP_OUT(SLOT
,env_out
,0);
536 CH
[6].op1_out
[1] = CH
[6].op1_out
[0];
537 CH
[6].op1_out
[0] = 0;
540 SLOT
= &CH
[6].SLOT
[SLOT2
];
541 env_out
=OPL_CALC_SLOT(SLOT
);
542 if( env_out
< EG_ENT
-1 )
545 if(SLOT
->vib
) SLOT
->Cnt
+= (SLOT
->Incr
*vib
/VIB_RATE
);
546 else SLOT
->Cnt
+= SLOT
->Incr
;
548 outd
[0] += OP_OUT(SLOT
,env_out
, feedback2
)*2;
551 // SD (17) = mul14[fnum7] + white noise
552 // TAM (15) = mul15[fnum8]
553 // TOP (18) = fnum6(mul18[fnum8]+whitenoise)
554 // HH (14) = fnum7(mul18[fnum8]+whitenoise) + white noise
555 env_sd
=OPL_CALC_SLOT(SLOT7_2
) + whitenoise
;
556 env_tam
=OPL_CALC_SLOT(SLOT8_1
);
557 env_top
=OPL_CALC_SLOT(SLOT8_2
);
558 env_hh
=OPL_CALC_SLOT(SLOT7_1
) + whitenoise
;
561 if(SLOT7_1
->vib
) SLOT7_1
->Cnt
+= (2*SLOT7_1
->Incr
*vib
/VIB_RATE
);
562 else SLOT7_1
->Cnt
+= 2*SLOT7_1
->Incr
;
563 if(SLOT7_2
->vib
) SLOT7_2
->Cnt
+= ((CH
[7].fc
*8)*vib
/VIB_RATE
);
564 else SLOT7_2
->Cnt
+= (CH
[7].fc
*8);
565 if(SLOT8_1
->vib
) SLOT8_1
->Cnt
+= (SLOT8_1
->Incr
*vib
/VIB_RATE
);
566 else SLOT8_1
->Cnt
+= SLOT8_1
->Incr
;
567 if(SLOT8_2
->vib
) SLOT8_2
->Cnt
+= ((CH
[8].fc
*48)*vib
/VIB_RATE
);
568 else SLOT8_2
->Cnt
+= (CH
[8].fc
*48);
570 tone8
= OP_OUT(SLOT8_2
,whitenoise
,0 );
573 if( env_sd
< EG_ENT
-1 )
574 outd
[0] += OP_OUT(SLOT7_1
,env_sd
, 0)*8;
576 if( env_tam
< EG_ENT
-1 )
577 outd
[0] += OP_OUT(SLOT8_1
,env_tam
, 0)*2;
579 if( env_top
< EG_ENT
-1 )
580 outd
[0] += OP_OUT(SLOT7_2
,env_top
,tone8
)*2;
582 if( env_hh
< EG_ENT
-1 )
583 outd
[0] += OP_OUT(SLOT7_2
,env_hh
,tone8
)*2;
586 /* ----------- initialize time tabls ----------- */
587 static void init_timetables( FM_OPL
*OPL
, int ARRATE
, int DRRATE
)
592 /* make attack rate & decay rate tables */
593 for (i
= 0;i
< 4;i
++) OPL
->AR_TABLE
[i
] = OPL
->DR_TABLE
[i
] = 0;
594 for (i
= 4;i
<= 60;i
++){
595 rate
= OPL
->freqbase
; /* frequency rate */
596 if( i
< 60 ) rate
*= 1.0+(i
&3)*0.25; /* b0-1 : x1 , x1.25 , x1.5 , x1.75 */
597 rate
*= 1<<((i
>>2)-1); /* b2-5 : shift bit */
598 rate
*= (double)(EG_ENT
<<ENV_BITS
);
599 OPL
->AR_TABLE
[i
] = rate
/ ARRATE
;
600 OPL
->DR_TABLE
[i
] = rate
/ DRRATE
;
602 for (i
= 60; i
< ARRAY_SIZE(OPL
->AR_TABLE
); i
++)
604 OPL
->AR_TABLE
[i
] = EG_AED
-1;
605 OPL
->DR_TABLE
[i
] = OPL
->DR_TABLE
[60];
608 for (i
= 0;i
< 64 ;i
++){ /* make for overflow area */
609 LOG(LOG_WAR
,("rate %2d , ar %f ms , dr %f ms \n",i
,
610 ((double)(EG_ENT
<<ENV_BITS
) / OPL
->AR_TABLE
[i
]) * (1000.0 / OPL
->rate
),
611 ((double)(EG_ENT
<<ENV_BITS
) / OPL
->DR_TABLE
[i
]) * (1000.0 / OPL
->rate
) ));
616 /* ---------- generic table initialize ---------- */
617 static int OPLOpenTable( void )
624 /* allocate dynamic tables */
625 if( (TL_TABLE
= malloc(TL_MAX
*2*sizeof(INT32
))) == NULL
)
627 if( (SIN_TABLE
= malloc(SIN_ENT
*4 *sizeof(INT32
*))) == NULL
)
632 if( (AMS_TABLE
= malloc(AMS_ENT
*2 *sizeof(INT32
))) == NULL
)
638 if( (VIB_TABLE
= malloc(VIB_ENT
*2 *sizeof(INT32
))) == NULL
)
645 /* make total level table */
646 for (t
= 0;t
< EG_ENT
-1 ;t
++){
647 rate
= ((1<<TL_BITS
)-1)/pow(10,EG_STEP
*t
/20); /* dB -> voltage */
648 TL_TABLE
[ t
] = (int)rate
;
649 TL_TABLE
[TL_MAX
+t
] = -TL_TABLE
[t
];
650 /* LOG(LOG_INF,("TotalLevel(%3d) = %x\n",t,TL_TABLE[t]));*/
652 /* fill volume off area */
653 for ( t
= EG_ENT
-1; t
< TL_MAX
;t
++){
654 TL_TABLE
[t
] = TL_TABLE
[TL_MAX
+t
] = 0;
657 /* make sinwave table (total level offet) */
658 /* degree 0 = degree 180 = off */
659 SIN_TABLE
[0] = SIN_TABLE
[SIN_ENT
/2] = &TL_TABLE
[EG_ENT
-1];
660 for (s
= 1;s
<= SIN_ENT
/4;s
++){
661 pom
= sin(2*PI
*s
/SIN_ENT
); /* sin */
662 pom
= 20*log10(1/pom
); /* decibel */
663 j
= pom
/ EG_STEP
; /* TL_TABLE steps */
665 /* degree 0 - 90 , degree 180 - 90 : plus section */
666 SIN_TABLE
[ s
] = SIN_TABLE
[SIN_ENT
/2-s
] = &TL_TABLE
[j
];
667 /* degree 180 - 270 , degree 360 - 270 : minus section */
668 SIN_TABLE
[SIN_ENT
/2+s
] = SIN_TABLE
[SIN_ENT
-s
] = &TL_TABLE
[TL_MAX
+j
];
669 /* LOG(LOG_INF,("sin(%3d) = %f:%f db\n",s,pom,(double)j * EG_STEP));*/
671 for (s
= 0;s
< SIN_ENT
;s
++)
673 SIN_TABLE
[SIN_ENT
*1+s
] = s
<(SIN_ENT
/2) ? SIN_TABLE
[s
] : &TL_TABLE
[EG_ENT
];
674 SIN_TABLE
[SIN_ENT
*2+s
] = SIN_TABLE
[s
% (SIN_ENT
/2)];
675 SIN_TABLE
[SIN_ENT
*3+s
] = (s
/(SIN_ENT
/4))&1 ? &TL_TABLE
[EG_ENT
] : SIN_TABLE
[SIN_ENT
*2+s
];
678 /* envelope counter -> envelope output table */
679 for (i
=0; i
<EG_ENT
; i
++)
682 pom
= pow( ((double)(EG_ENT
-1-i
)/EG_ENT
) , 8 ) * EG_ENT
;
683 /* if( pom >= EG_ENT ) pom = EG_ENT-1; */
684 ENV_CURVE
[i
] = (int)pom
;
685 /* DECAY ,RELEASE curve */
686 ENV_CURVE
[(EG_DST
>>ENV_BITS
)+i
]= i
;
689 ENV_CURVE
[EG_OFF
>>ENV_BITS
]= EG_ENT
-1;
690 /* make LFO ams table */
691 for (i
=0; i
<AMS_ENT
; i
++)
693 pom
= (1.0+sin(2*PI
*i
/AMS_ENT
))/2; /* sin */
694 AMS_TABLE
[i
] = (1.0/EG_STEP
)*pom
; /* 1dB */
695 AMS_TABLE
[AMS_ENT
+i
] = (4.8/EG_STEP
)*pom
; /* 4.8dB */
697 /* make LFO vibrate table */
698 for (i
=0; i
<VIB_ENT
; i
++)
700 /* 100cent = 1seminote = 6% ?? */
701 pom
= (double)VIB_RATE
*0.06*sin(2*PI
*i
/VIB_ENT
); /* +-100sect step */
702 VIB_TABLE
[i
] = VIB_RATE
+ (pom
*0.07); /* +- 7cent */
703 VIB_TABLE
[VIB_ENT
+i
] = VIB_RATE
+ (pom
*0.14); /* +-14cent */
704 /* LOG(LOG_INF,("vib %d=%d\n",i,VIB_TABLE[VIB_ENT+i])); */
710 static void OPLCloseTable( void )
718 /* CSM Key Controll */
719 INLINE
void CSMKeyControll(OPL_CH
*CH
)
721 OPL_SLOT
*slot1
= &CH
->SLOT
[SLOT1
];
722 OPL_SLOT
*slot2
= &CH
->SLOT
[SLOT2
];
726 /* total level latch */
727 slot1
->TLL
= slot1
->TL
+ (CH
->ksl_base
>>slot1
->ksl
);
728 slot1
->TLL
= slot1
->TL
+ (CH
->ksl_base
>>slot1
->ksl
);
730 CH
->op1_out
[0] = CH
->op1_out
[1] = 0;
735 /* ---------- opl initialize ---------- */
736 static void OPL_initalize(FM_OPL
*OPL
)
741 OPL
->freqbase
= (OPL
->rate
) ? ((double)OPL
->clock
/ OPL
->rate
) / 72 : 0;
742 /* Timer base time */
743 OPL
->TimerBase
= 1.0/((double)OPL
->clock
/ 72.0 );
744 /* make time tables */
745 init_timetables( OPL
, OPL_ARRATE
, OPL_DRRATE
);
746 /* make fnumber -> increment counter table */
747 for( fn
=0 ; fn
< 1024 ; fn
++ )
749 OPL
->FN_TABLE
[fn
] = OPL
->freqbase
* fn
* FREQ_RATE
* (1<<7) / 2;
752 OPL
->amsIncr
= OPL
->rate
? (double)AMS_ENT
*(1<<AMS_SHIFT
) / OPL
->rate
* 3.7 * ((double)OPL
->clock
/3600000) : 0;
753 OPL
->vibIncr
= OPL
->rate
? (double)VIB_ENT
*(1<<VIB_SHIFT
) / OPL
->rate
* 6.4 * ((double)OPL
->clock
/3600000) : 0;
756 /* ---------- write a OPL registers ---------- */
757 static void OPLWriteReg(FM_OPL
*OPL
, int r
, int v
)
765 case 0x00: /* 00-1f:controll */
769 /* wave selector enable */
770 if(OPL
->type
&OPL_TYPE_WAVESEL
)
772 OPL
->wavesel
= v
&0x20;
775 /* preset compatible mode */
777 for(c
=0;c
<OPL
->max_ch
;c
++)
779 OPL
->P_CH
[c
].SLOT
[SLOT1
].wavetable
= &SIN_TABLE
[0];
780 OPL
->P_CH
[c
].SLOT
[SLOT2
].wavetable
= &SIN_TABLE
[0];
785 case 0x02: /* Timer 1 */
786 OPL
->T
[0] = (256-v
)*4;
788 case 0x03: /* Timer 2 */
789 OPL
->T
[1] = (256-v
)*16;
791 case 0x04: /* IRQ clear / mask and Timer enable */
793 { /* IRQ flag clear */
794 OPL_STATUS_RESET(OPL
,0x7f);
797 { /* set IRQ mask ,timer enable*/
799 UINT8 st2
= (v
>>1)&1;
800 /* IRQRST,T1MSK,t2MSK,EOSMSK,BRMSK,x,ST2,ST1 */
801 OPL_STATUS_RESET(OPL
,v
&0x78);
802 OPL_STATUSMASK_SET(OPL
,((~v
)&0x78)|0x01);
804 if(OPL
->st
[1] != st2
)
806 double interval
= st2
? (double)OPL
->T
[1]*OPL
->TimerBase
: 0.0;
808 if (OPL
->TimerHandler
) (OPL
->TimerHandler
)(OPL
->TimerParam
+1,interval
);
811 if(OPL
->st
[0] != st1
)
813 double interval
= st1
? (double)OPL
->T
[0]*OPL
->TimerBase
: 0.0;
815 if (OPL
->TimerHandler
) (OPL
->TimerHandler
)(OPL
->TimerParam
+0,interval
);
820 case 0x06: /* Key Board OUT */
821 if(OPL
->type
&OPL_TYPE_KEYBOARD
)
823 if(OPL
->keyboardhandler_w
)
824 OPL
->keyboardhandler_w(OPL
->keyboard_param
,v
);
826 LOG(LOG_WAR
,("OPL:write unmapped KEYBOARD port\n"));
829 case 0x07: /* DELTA-T controll : START,REC,MEMDATA,REPT,SPOFF,x,x,RST */
830 if(OPL
->type
&OPL_TYPE_ADPCM
)
831 YM_DELTAT_ADPCM_Write(OPL
->deltat
,r
-0x07,v
);
833 case 0x08: /* MODE,DELTA-T : CSM,NOTESEL,x,x,smpl,da/ad,64k,rom */
835 v
&=0x1f; /* for DELTA-T unit */
836 case 0x09: /* START ADD */
838 case 0x0b: /* STOP ADD */
840 case 0x0d: /* PRESCALE */
842 case 0x0f: /* ADPCM data */
843 case 0x10: /* DELTA-N */
844 case 0x11: /* DELTA-N */
845 case 0x12: /* EG-CTRL */
846 if(OPL
->type
&OPL_TYPE_ADPCM
)
847 YM_DELTAT_ADPCM_Write(OPL
->deltat
,r
-0x07,v
);
850 case 0x15: /* DAC data */
852 case 0x17: /* SHIFT */
854 case 0x18: /* I/O CTRL (Direction) */
855 if(OPL
->type
&OPL_TYPE_IO
)
856 OPL
->portDirection
= v
&0x0f;
858 case 0x19: /* I/O DATA */
859 if(OPL
->type
&OPL_TYPE_IO
)
862 if(OPL
->porthandler_w
)
863 OPL
->porthandler_w(OPL
->port_param
,v
&OPL
->portDirection
);
866 case 0x1a: /* PCM data */
872 case 0x20: /* am,vib,ksr,eg type,mul */
873 slot
= slot_array
[r
&0x1f];
874 if(slot
== -1) return;
878 slot
= slot_array
[r
&0x1f];
879 if(slot
== -1) return;
880 set_ksl_tl(OPL
,slot
,v
);
883 slot
= slot_array
[r
&0x1f];
884 if(slot
== -1) return;
885 set_ar_dr(OPL
,slot
,v
);
888 slot
= slot_array
[r
&0x1f];
889 if(slot
== -1) return;
890 set_sl_rr(OPL
,slot
,v
);
896 /* amsep,vibdep,r,bd,sd,tom,tc,hh */
898 UINT8 rkey
= OPL
->rythm
^v
;
899 OPL
->ams_table
= &AMS_TABLE
[v
&0x80 ? AMS_ENT
: 0];
900 OPL
->vib_table
= &VIB_TABLE
[v
&0x40 ? VIB_ENT
: 0];
905 usrintf_showmessage("OPL Rythm mode select");
912 OPL
->P_CH
[6].op1_out
[0] = OPL
->P_CH
[6].op1_out
[1] = 0;
913 OPL_KEYON(&OPL
->P_CH
[6].SLOT
[SLOT1
]);
914 OPL_KEYON(&OPL
->P_CH
[6].SLOT
[SLOT2
]);
918 OPL_KEYOFF(&OPL
->P_CH
[6].SLOT
[SLOT1
]);
919 OPL_KEYOFF(&OPL
->P_CH
[6].SLOT
[SLOT2
]);
925 if(v
&0x08) OPL_KEYON(&OPL
->P_CH
[7].SLOT
[SLOT2
]);
926 else OPL_KEYOFF(&OPL
->P_CH
[7].SLOT
[SLOT2
]);
927 }/* TAM key on/off */
930 if(v
&0x04) OPL_KEYON(&OPL
->P_CH
[8].SLOT
[SLOT1
]);
931 else OPL_KEYOFF(&OPL
->P_CH
[8].SLOT
[SLOT1
]);
933 /* TOP-CY key on/off */
936 if(v
&0x02) OPL_KEYON(&OPL
->P_CH
[8].SLOT
[SLOT2
]);
937 else OPL_KEYOFF(&OPL
->P_CH
[8].SLOT
[SLOT2
]);
942 if(v
&0x01) OPL_KEYON(&OPL
->P_CH
[7].SLOT
[SLOT1
]);
943 else OPL_KEYOFF(&OPL
->P_CH
[7].SLOT
[SLOT1
]);
949 /* keyon,block,fnum */
950 if( (r
&0x0f) > 8) return;
951 CH
= &OPL
->P_CH
[r
&0x0f];
954 block_fnum
= (CH
->block_fnum
&0x1f00) | v
;
958 int keyon
= (v
>>5)&1;
959 block_fnum
= ((v
&0x1f)<<8) | (CH
->block_fnum
&0xff);
960 if(CH
->keyon
!= keyon
)
962 if( (CH
->keyon
=keyon
) )
964 CH
->op1_out
[0] = CH
->op1_out
[1] = 0;
965 OPL_KEYON(&CH
->SLOT
[SLOT1
]);
966 OPL_KEYON(&CH
->SLOT
[SLOT2
]);
970 OPL_KEYOFF(&CH
->SLOT
[SLOT1
]);
971 OPL_KEYOFF(&CH
->SLOT
[SLOT2
]);
976 if(CH
->block_fnum
!= block_fnum
)
978 int blockRv
= 7-(block_fnum
>>10);
979 int fnum
= block_fnum
&0x3ff;
980 CH
->block_fnum
= block_fnum
;
982 CH
->ksl_base
= KSL_TABLE
[block_fnum
>>6];
983 CH
->fc
= OPL
->FN_TABLE
[fnum
]>>blockRv
;
984 CH
->kcode
= CH
->block_fnum
>>9;
985 if( (OPL
->mode
&0x40) && CH
->block_fnum
&0x100) CH
->kcode
|=1;
986 CALC_FCSLOT(CH
,&CH
->SLOT
[SLOT1
]);
987 CALC_FCSLOT(CH
,&CH
->SLOT
[SLOT2
]);
992 if( (r
&0x0f) > 8) return;
993 CH
= &OPL
->P_CH
[r
&0x0f];
995 int feedback
= (v
>>1)&7;
996 CH
->FB
= feedback
? (8+1) - feedback
: 0;
1001 case 0xe0: /* wave type */
1002 slot
= slot_array
[r
&0x1f];
1003 if(slot
== -1) return;
1004 CH
= &OPL
->P_CH
[slot
/2];
1007 /* LOG(LOG_INF,("OPL SLOT %d wave select %d\n",slot,v&3)); */
1008 CH
->SLOT
[slot
&1].wavetable
= &SIN_TABLE
[(v
&0x03)*SIN_ENT
];
1014 /* lock/unlock for common table */
1015 static int OPL_LockTable(void)
1018 if(num_lock
>1) return 0;
1021 /* allocate total level table (128kb space) */
1022 if( !OPLOpenTable() )
1030 static void OPL_UnLockTable(void)
1032 if(num_lock
) num_lock
--;
1033 if(num_lock
) return;
1039 #if (BUILD_YM3812 || BUILD_YM3526)
1040 /*******************************************************************************/
1041 /* YM3812 local section */
1042 /*******************************************************************************/
1044 /* ---------- update one of chip ----------- */
1045 void YM3812UpdateOne(FM_OPL
*OPL
, INT16
*buffer
, int length
)
1049 OPLSAMPLE
*buf
= buffer
;
1050 UINT32 amsCnt
= OPL
->amsCnt
;
1051 UINT32 vibCnt
= OPL
->vibCnt
;
1052 UINT8 rythm
= OPL
->rythm
&0x20;
1055 if( (void *)OPL
!= cur_chip
){
1056 cur_chip
= (void *)OPL
;
1057 /* channel pointers */
1061 SLOT7_1
= &S_CH
[7].SLOT
[SLOT1
];
1062 SLOT7_2
= &S_CH
[7].SLOT
[SLOT2
];
1063 SLOT8_1
= &S_CH
[8].SLOT
[SLOT1
];
1064 SLOT8_2
= &S_CH
[8].SLOT
[SLOT2
];
1066 amsIncr
= OPL
->amsIncr
;
1067 vibIncr
= OPL
->vibIncr
;
1068 ams_table
= OPL
->ams_table
;
1069 vib_table
= OPL
->vib_table
;
1071 R_CH
= rythm
? &S_CH
[6] : E_CH
;
1072 for( i
=0; i
< length
; i
++ )
1074 /* channel A channel B channel C */
1076 ams
= ams_table
[(amsCnt
+=amsIncr
)>>AMS_SHIFT
];
1077 vib
= vib_table
[(vibCnt
+=vibIncr
)>>VIB_SHIFT
];
1080 for(CH
=S_CH
; CH
< R_CH
; CH
++)
1086 data
= Limit( outd
[0] , OPL_MAXOUT
, OPL_MINOUT
);
1087 /* store to sound buffer */
1088 buf
[i
] = data
>> OPL_OUTSB
;
1091 OPL
->amsCnt
= amsCnt
;
1092 OPL
->vibCnt
= vibCnt
;
1093 #ifdef OPL_OUTPUT_LOG
1096 for(opl_dbg_chip
=0;opl_dbg_chip
<opl_dbg_maxchip
;opl_dbg_chip
++)
1097 if( opl_dbg_opl
[opl_dbg_chip
] == OPL
) break;
1098 fprintf(opl_dbg_fp
,"%c%c%c",0x20+opl_dbg_chip
,length
&0xff,length
/256);
1102 #endif /* (BUILD_YM3812 || BUILD_YM3526) */
1106 void Y8950UpdateOne(FM_OPL
*OPL
, INT16
*buffer
, int length
)
1110 OPLSAMPLE
*buf
= buffer
;
1111 UINT32 amsCnt
= OPL
->amsCnt
;
1112 UINT32 vibCnt
= OPL
->vibCnt
;
1113 UINT8 rythm
= OPL
->rythm
&0x20;
1115 YM_DELTAT
*DELTAT
= OPL
->deltat
;
1117 /* setup DELTA-T unit */
1118 YM_DELTAT_DECODE_PRESET(DELTAT
);
1120 if( (void *)OPL
!= cur_chip
){
1121 cur_chip
= (void *)OPL
;
1122 /* channel pointers */
1126 SLOT7_1
= &S_CH
[7].SLOT
[SLOT1
];
1127 SLOT7_2
= &S_CH
[7].SLOT
[SLOT2
];
1128 SLOT8_1
= &S_CH
[8].SLOT
[SLOT1
];
1129 SLOT8_2
= &S_CH
[8].SLOT
[SLOT2
];
1131 amsIncr
= OPL
->amsIncr
;
1132 vibIncr
= OPL
->vibIncr
;
1133 ams_table
= OPL
->ams_table
;
1134 vib_table
= OPL
->vib_table
;
1136 R_CH
= rythm
? &S_CH
[6] : E_CH
;
1137 for( i
=0; i
< length
; i
++ )
1139 /* channel A channel B channel C */
1141 ams
= ams_table
[(amsCnt
+=amsIncr
)>>AMS_SHIFT
];
1142 vib
= vib_table
[(vibCnt
+=vibIncr
)>>VIB_SHIFT
];
1145 if( DELTAT
->portstate
)
1146 YM_DELTAT_ADPCM_CALC(DELTAT
);
1148 for(CH
=S_CH
; CH
< R_CH
; CH
++)
1154 data
= Limit( outd
[0] , OPL_MAXOUT
, OPL_MINOUT
);
1155 /* store to sound buffer */
1156 buf
[i
] = data
>> OPL_OUTSB
;
1158 OPL
->amsCnt
= amsCnt
;
1159 OPL
->vibCnt
= vibCnt
;
1160 /* deltaT START flag */
1161 if( !DELTAT
->portstate
)
1162 OPL
->status
&= 0xfe;
1166 /* ---------- reset one of chip ---------- */
1167 void OPLResetChip(FM_OPL
*OPL
)
1173 OPL
->mode
= 0; /* normal mode */
1174 OPL_STATUS_RESET(OPL
,0x7f);
1175 /* reset with register write */
1176 OPLWriteReg(OPL
,0x01,0); /* wabesel disable */
1177 OPLWriteReg(OPL
,0x02,0); /* Timer1 */
1178 OPLWriteReg(OPL
,0x03,0); /* Timer2 */
1179 OPLWriteReg(OPL
,0x04,0); /* IRQ mask clear */
1180 for(i
= 0xff ; i
>= 0x20 ; i
-- ) OPLWriteReg(OPL
,i
,0);
1181 /* reset OPerator paramater */
1182 for( c
= 0 ; c
< OPL
->max_ch
; c
++ )
1184 OPL_CH
*CH
= &OPL
->P_CH
[c
];
1185 /* OPL->P_CH[c].PAN = OPN_CENTER; */
1186 for(s
= 0 ; s
< 2 ; s
++ )
1189 CH
->SLOT
[s
].wavetable
= &SIN_TABLE
[0];
1190 /* CH->SLOT[s].evm = ENV_MOD_RR; */
1191 CH
->SLOT
[s
].evc
= EG_OFF
;
1192 CH
->SLOT
[s
].eve
= EG_OFF
+1;
1193 CH
->SLOT
[s
].evs
= 0;
1197 if(OPL
->type
&OPL_TYPE_ADPCM
)
1199 YM_DELTAT
*DELTAT
= OPL
->deltat
;
1201 DELTAT
->freqbase
= OPL
->freqbase
;
1202 DELTAT
->output_pointer
= outd
;
1203 DELTAT
->portshift
= 5;
1204 DELTAT
->output_range
= DELTAT_MIXING_LEVEL
<<TL_BITS
;
1205 YM_DELTAT_ADPCM_Reset(DELTAT
,0);
1210 /* ---------- Create one of vietual YM3812 ---------- */
1211 /* 'rate' is sampling rate and 'bufsiz' is the size of the */
1212 FM_OPL
*OPLCreate(int type
, int clock
, int rate
)
1217 int max_ch
= 9; /* normaly 9 channels */
1219 if( OPL_LockTable() ==-1) return NULL
;
1220 /* allocate OPL state space */
1221 state_size
= sizeof(FM_OPL
);
1222 state_size
+= sizeof(OPL_CH
)*max_ch
;
1224 if(type
&OPL_TYPE_ADPCM
) state_size
+= sizeof(YM_DELTAT
);
1226 /* allocate memory block */
1227 ptr
= malloc(state_size
);
1228 if(ptr
==NULL
) return NULL
;
1230 memset(ptr
,0,state_size
);
1231 OPL
= (FM_OPL
*)ptr
; ptr
+=sizeof(FM_OPL
);
1232 OPL
->P_CH
= (OPL_CH
*)ptr
; ptr
+=sizeof(OPL_CH
)*max_ch
;
1234 if(type
&OPL_TYPE_ADPCM
) OPL
->deltat
= (YM_DELTAT
*)ptr
; ptr
+=sizeof(YM_DELTAT
);
1236 /* set channel state pointer */
1240 OPL
->max_ch
= max_ch
;
1241 /* init grobal tables */
1245 #ifdef OPL_OUTPUT_LOG
1248 opl_dbg_fp
= fopen("opllog.opl","wb");
1249 opl_dbg_maxchip
= 0;
1253 opl_dbg_opl
[opl_dbg_maxchip
] = OPL
;
1254 fprintf(opl_dbg_fp
,"%c%c%c%c%c%c",0x00+opl_dbg_maxchip
,
1258 (clock
/0x10000)&0xff,
1259 (clock
/0x1000000)&0xff);
1266 /* ---------- Destroy one of vietual YM3812 ---------- */
1267 void OPLDestroy(FM_OPL
*OPL
)
1269 #ifdef OPL_OUTPUT_LOG
1280 /* ---------- Option handlers ---------- */
1282 void OPLSetTimerHandler(FM_OPL
*OPL
,OPL_TIMERHANDLER TimerHandler
,int channelOffset
)
1284 OPL
->TimerHandler
= TimerHandler
;
1285 OPL
->TimerParam
= channelOffset
;
1287 void OPLSetIRQHandler(FM_OPL
*OPL
,OPL_IRQHANDLER IRQHandler
,int param
)
1289 OPL
->IRQHandler
= IRQHandler
;
1290 OPL
->IRQParam
= param
;
1292 void OPLSetUpdateHandler(FM_OPL
*OPL
,OPL_UPDATEHANDLER UpdateHandler
,int param
)
1294 OPL
->UpdateHandler
= UpdateHandler
;
1295 OPL
->UpdateParam
= param
;
1298 void OPLSetPortHandler(FM_OPL
*OPL
,OPL_PORTHANDLER_W PortHandler_w
,OPL_PORTHANDLER_R PortHandler_r
,int param
)
1300 OPL
->porthandler_w
= PortHandler_w
;
1301 OPL
->porthandler_r
= PortHandler_r
;
1302 OPL
->port_param
= param
;
1305 void OPLSetKeyboardHandler(FM_OPL
*OPL
,OPL_PORTHANDLER_W KeyboardHandler_w
,OPL_PORTHANDLER_R KeyboardHandler_r
,int param
)
1307 OPL
->keyboardhandler_w
= KeyboardHandler_w
;
1308 OPL
->keyboardhandler_r
= KeyboardHandler_r
;
1309 OPL
->keyboard_param
= param
;
1312 /* ---------- YM3812 I/O interface ---------- */
1313 int OPLWrite(FM_OPL
*OPL
,int a
,int v
)
1316 { /* address port */
1317 OPL
->address
= v
& 0xff;
1321 if(OPL
->UpdateHandler
) OPL
->UpdateHandler(OPL
->UpdateParam
,0);
1322 #ifdef OPL_OUTPUT_LOG
1325 for(opl_dbg_chip
=0;opl_dbg_chip
<opl_dbg_maxchip
;opl_dbg_chip
++)
1326 if( opl_dbg_opl
[opl_dbg_chip
] == OPL
) break;
1327 fprintf(opl_dbg_fp
,"%c%c%c",0x10+opl_dbg_chip
,OPL
->address
,v
);
1330 OPLWriteReg(OPL
,OPL
->address
,v
);
1332 return OPL
->status
>>7;
1335 unsigned char OPLRead(FM_OPL
*OPL
,int a
)
1339 return OPL
->status
& (OPL
->statusmask
|0x80);
1342 switch(OPL
->address
)
1344 case 0x05: /* KeyBoard IN */
1345 if(OPL
->type
&OPL_TYPE_KEYBOARD
)
1347 if(OPL
->keyboardhandler_r
)
1348 return OPL
->keyboardhandler_r(OPL
->keyboard_param
);
1350 LOG(LOG_WAR
,("OPL:read unmapped KEYBOARD port\n"));
1355 case 0x0f: /* ADPCM-DATA */
1358 case 0x19: /* I/O DATA */
1359 if(OPL
->type
&OPL_TYPE_IO
)
1361 if(OPL
->porthandler_r
)
1362 return OPL
->porthandler_r(OPL
->port_param
);
1364 LOG(LOG_WAR
,("OPL:read unmapped I/O port\n"));
1368 case 0x1a: /* PCM-DATA */
1374 int OPLTimerOver(FM_OPL
*OPL
,int c
)
1378 OPL_STATUS_SET(OPL
,0x20);
1382 OPL_STATUS_SET(OPL
,0x40);
1383 /* CSM mode key,TL controll */
1384 if( OPL
->mode
& 0x80 )
1385 { /* CSM mode total level latch and auto key on */
1387 if(OPL
->UpdateHandler
) OPL
->UpdateHandler(OPL
->UpdateParam
,0);
1389 CSMKeyControll( &OPL
->P_CH
[ch
] );
1393 if (OPL
->TimerHandler
) (OPL
->TimerHandler
)(OPL
->TimerParam
+c
,(double)OPL
->T
[c
]*OPL
->TimerBase
);
1394 return OPL
->status
>>7;