/* ** ** File: fmopl.c -- software implementation of FM sound generator ** ** Copyright (C) 1999,2000 Tatsuyuki Satoh , MultiArcadeMachineEmurator development ** ** Version 0.37a ** */ /* preliminary : Problem : note: */ /* This version of fmopl.c is a fork of the MAME one, relicensed under the LGPL. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #define INLINE __inline #define HAS_YM3812 1 #include #include #include #include #include //#include "driver.h" /* use M.A.M.E. */ #include "fmopl.h" #ifndef PI #define PI 3.14159265358979323846 #endif /* -------------------- for debug --------------------- */ /* #define OPL_OUTPUT_LOG */ #ifdef OPL_OUTPUT_LOG static FILE *opl_dbg_fp = NULL; static FM_OPL *opl_dbg_opl[16]; static int opl_dbg_maxchip,opl_dbg_chip; #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 */ #define DELTAT_MIXING_LEVEL (1) /* DELTA-T ADPCM MIXING LEVEL */ #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<pre { line-height: 125%; margin: 0; } td.linenos pre { color: #000000; background-color: #f0f0f0; padding: 0 5px 0 5px; } span.linenos { color: #000000; background-color: #f0f0f0; padding: 0 5px 0 5px; } td.linenos pre.special { color: #000000; background-color: #ffffc0; padding: 0 5px 0 5px; } span.linenos.special { color: #000000; background-color: #ffffc0; padding: 0 5px 0 5px; } .highlight .hll { background-color: #ffffcc } .highlight { background: #ffffff; } .highlight .c { color: #888888 } /* Comment */ .highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */ .highlight .k { color: #008800; font-weight: bold } /* Keyword */ .highlight .ch { color: #888888 } /* Comment.Hashbang */ .highlight .cm { color: #888888 } /* Comment.Multiline */ .highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */ .highlight .cpf { color: #888888 } /* Comment.PreprocFile */ .highlight .c1 { color: #888888 } /* Comment.Single */ .highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */ .highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */ .highlight .ge { font-style: italic } /* Generic.Emph */ .highlight .gr { color: #aa0000 } /* Generic.Error */ .highlight .gh { color: #333333 } /* Generic.Heading */ .highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */ .highlight .go { color: #888888 } /* Generic.Output */ .highlight .gp { color: #555555 } /* Generic.Prompt */ .highlight .gs { font-weight: bold } /* Generic.Strong */ .highlight .gu { color: #666666 } /* Generic.Subheading */ .highlight .gt { color: #aa0000 } /* Generic.Traceback */ .highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */ .highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */ .highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */ .highlight .kp { color: #008800 } /* Keyword.Pseudo */ .highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */ .highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */ .highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */ .highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */ .highlight .na { color: #336699 } /* Name.Attribute */ .highlight .nb { color: #003388 } /* Name.Builtin */ .highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */ .highlight .no { color: #003366; font-weight: bold } /* Name.Constant */ .highlight .nd { color: #555555 } /* Name.Decorator */ .highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */ .highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */ .highlight .nl { color: #336699; font-style: italic } /* Name.Label */ .highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */ .highlight .py { color: #336699; font-weight: bold } /* Name.Property */ .highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */ .highlight .nv { color: #336699 } /* Name.Variable */ .highlight .ow { color: #008800 } /* Operator.Word */ .highlight .w { color: #bbbbbb } /* Text.Whitespace */ .highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;

entity ram1 is
  generic (
    WIDTHB      : integer := 32;
    SIZEB       : integer := 64;
    ADDRWIDTHB  : integer := 6
    );

  port (
    clkB   : in  std_logic;
    enB    : in  std_logic;
    weB    : in  std_logic;
    addrB  : in  std_logic_vector(ADDRWIDTHB-1 downto 0);
    diB    : in  std_logic_vector(WIDTHB-1 downto 0);
    doB    : out std_logic_vector(WIDTHB-1 downto 0)
    );

end ram1;

architecture behavioral of ram1 is
  type ramType is array (0 to SIZEB-1) of std_logic_vector(WIDTHB-1 downto 0);
  shared variable ram : ramType := (others => (others => '0'));
begin
  process (clkB)
  begin
    if rising_edge(clkB) then
      if enB = '1' then
        if weB = '1' then
          ram(to_integer(unsigned(addrB))) := diB;
        end if;
        doB <= ram(to_integer(unsigned(addrB)));
      end if;
    end if;
  end process;
end behavioral;
generated by cgit v1.2.3 (git 2.25.1) at 2026-01-04 14:21:53 +0000
LOT7_2,env_top,tone8)*2; /* HH */ if( env_hh < 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<AR_TABLE[i] = rate / ARRATE; OPL->DR_TABLE[i] = rate / DRRATE; } for (i = 60;i < 76;i++) { OPL->AR_TABLE[i] = EG_AED-1; OPL->DR_TABLE[i] = OPL->DR_TABLE[60]; } #if 0 for (i = 0;i < 64 ;i++){ /* make for overflow area */ LOG(LOG_WAR,("rate %2d , ar %f ms , dr %f ms \n",i, ((double)(EG_ENT<AR_TABLE[i]) * (1000.0 / OPL->rate), ((double)(EG_ENT<DR_TABLE[i]) * (1000.0 / OPL->rate) )); } #endif } /* ---------- generic table initialize ---------- */ static int OPLOpenTable( void ) { int s,t; double rate; int i,j; double pom; /* allocate dynamic tables */ if( (TL_TABLE = malloc(TL_MAX*2*sizeof(INT32))) == NULL) return 0; if( (SIN_TABLE = malloc(SIN_ENT*4 *sizeof(INT32 *))) == NULL) { free(TL_TABLE); return 0; } if( (AMS_TABLE = malloc(AMS_ENT*2 *sizeof(INT32))) == NULL) { free(TL_TABLE); free(SIN_TABLE); return 0; } if( (VIB_TABLE = malloc(VIB_ENT*2 *sizeof(INT32))) == NULL) { free(TL_TABLE); free(SIN_TABLE); free(AMS_TABLE); return 0; } /* make total level table */ for (t = 0;t < EG_ENT-1 ;t++){ rate = ((1< voltage */ TL_TABLE[ t] = (int)rate; TL_TABLE[TL_MAX+t] = -TL_TABLE[t]; /* LOG(LOG_INF,("TotalLevel(%3d) = %x\n",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; } /* 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 = 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]; /* LOG(LOG_INF,("sin(%3d) = %f:%f db\n",s,pom,(double)j * EG_STEP));*/ } 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]; } /* envelope counter -> envelope output table */ for (i=0; i= EG_ENT ) pom = EG_ENT-1; */ ENV_CURVE[i] = (int)pom; /* DECAY ,RELEASE curve */ ENV_CURVE[(EG_DST>>ENV_BITS)+i]= i; } /* off */ ENV_CURVE[EG_OFF>>ENV_BITS]= EG_ENT-1; /* make LFO ams table */ for (i=0; iSLOT[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; /* 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] = OPL->freqbase * fn * FREQ_RATE * (1<<7) / 2; } /* LFO freq.table */ OPL->amsIncr = OPL->rate ? (double)AMS_ENT*(1<rate * 3.7 * ((double)OPL->clock/3600000) : 0; OPL->vibIncr = OPL->rate ? (double)VIB_ENT*(1<rate * 6.4 * ((double)OPL->clock/3600000) : 0; } /* ---------- write a OPL registers ---------- */ static void OPLWriteReg(FM_OPL *OPL, int r, int v) { OPL_CH *CH; int slot; int 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;cmax_ch;c++) { OPL->P_CH[c].SLOT[SLOT1].wavetable = &SIN_TABLE[0]; OPL->P_CH[c].SLOT[SLOT2].wavetable = &SIN_TABLE[0]; } } } return; case 0x02: /* Timer 1 */ OPL->T[0] = (256-v)*4; break; case 0x03: /* Timer 2 */ 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); } 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); /* timer 2 */ 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); } /* timer 1 */ 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); } } return; #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 LOG(LOG_WAR,("OPL:write unmapped KEYBOARD port\n")); } return; 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); return; case 0x08: /* MODE,DELTA-T : CSM,NOTESEL,x,x,smpl,da/ad,64k,rom */ OPL->mode = v; 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); return; #if 0 case 0x15: /* DAC data */ case 0x16: case 0x17: /* SHIFT */ return; case 0x18: /* I/O CTRL (Direction) */ if(OPL->type&OPL_TYPE_IO) OPL->portDirection = v&0x0f; return; 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); } return; case 0x1a: /* PCM data */ return; #endif #endif } break; case 0x20: /* am,vib,ksr,eg type,mul */ slot = slot_array[r&0x1f]; if(slot == -1) return; set_mul(OPL,slot,v); return; case 0x40: slot = slot_array[r&0x1f]; if(slot == -1) return; set_ksl_tl(OPL,slot,v); return; case 0x60: slot = slot_array[r&0x1f]; if(slot == -1) return; set_ar_dr(OPL,slot,v); return; case 0x80: slot = slot_array[r&0x1f]; if(slot == -1) return; set_sl_rr(OPL,slot,v); return; case 0xa0: 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) { #if 0 usrintf_showmessage("OPL Rythm mode select"); #endif /* BD key on/off */ 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]); } } /* SD key on/off */ 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(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]); } } } 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; } 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) { int blockRv = 7-(block_fnum>>10); int fnum = block_fnum&0x3ff; CH->block_fnum = block_fnum; 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]); } return; case 0xc0: /* FB,C */ if( (r&0x0f) > 8) return; CH = &OPL->P_CH[r&0x0f]; { int feedback = (v>>1)&7; CH->FB = feedback ? (8+1) - feedback : 0; CH->CON = v&1; set_algorythm(CH); } return; case 0xe0: /* wave type */ slot = slot_array[r&0x1f]; if(slot == -1) return; CH = &OPL->P_CH[slot/2]; if(OPL->wavesel) { /* LOG(LOG_INF,("OPL SLOT %d wave select %d\n",slot,v&3)); */ CH->SLOT[slot&1].wavetable = &SIN_TABLE[(v&0x03)*SIN_ENT]; } return; } } /* lock/unlock for common table */ static int OPL_LockTable(void) { num_lock++; if(num_lock>1) return 0; /* first time */ cur_chip = NULL; /* allocate total level table (128kb space) */ if( !OPLOpenTable() ) { num_lock--; return -1; } return 0; } static void OPL_UnLockTable(void) { if(num_lock) num_lock--; if(num_lock) return; /* last time */ cur_chip = NULL; OPLCloseTable(); } #if (BUILD_YM3812 || BUILD_YM3526) /*******************************************************************************/ /* YM3812 local section */ /*******************************************************************************/ /* ---------- update one of chip ----------- */ void YM3812UpdateOne(FM_OPL *OPL, INT16 *buffer, int length) { int i; int data; OPLSAMPLE *buf = buffer; UINT32 amsCnt = OPL->amsCnt; UINT32 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; #ifdef OPL_OUTPUT_LOG if(opl_dbg_fp) { for(opl_dbg_chip=0;opl_dbg_chipamsCnt; UINT32 vibCnt = OPL->vibCnt; UINT8 rythm = OPL->rythm&0x20; OPL_CH *CH,*R_CH; YM_DELTAT *DELTAT = OPL->deltat; /* setup DELTA-T unit */ YM_DELTAT_DECODE_PRESET(DELTAT); 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; /* deltaT ADPCM */ if( DELTAT->portstate ) YM_DELTAT_ADPCM_CALC(DELTAT); /* 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; /* deltaT START flag */ if( !DELTAT->portstate ) OPL->status &= 0xfe; } #endif /* ---------- reset one of chip ---------- */ void OPLResetChip(FM_OPL *OPL) { int c,s; int i; /* reset chip */ OPL->mode = 0; /* normal mode */ OPL_STATUS_RESET(OPL,0x7f); /* reset with register write */ 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]; /* OPL->P_CH[c].PAN = OPN_CENTER; */ for(s = 0 ; s < 2 ; s++ ) { /* wave table */ 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 = outd; DELTAT->portshift = 5; DELTAT->output_range = DELTAT_MIXING_LEVEL<P_CH = (OPL_CH *)ptr; ptr+=sizeof(OPL_CH)*max_ch; #if BUILD_Y8950 if(type&OPL_TYPE_ADPCM) OPL->deltat = (YM_DELTAT *)ptr; ptr+=sizeof(YM_DELTAT); #endif /* set channel state pointer */ OPL->type = type; OPL->clock = clock; OPL->rate = rate; OPL->max_ch = max_ch; /* init grobal tables */ OPL_initalize(OPL); /* reset chip */ OPLResetChip(OPL); #ifdef OPL_OUTPUT_LOG if(!opl_dbg_fp) { opl_dbg_fp = fopen("opllog.opl","wb"); opl_dbg_maxchip = 0; } if(opl_dbg_fp) { opl_dbg_opl[opl_dbg_maxchip] = OPL; fprintf(opl_dbg_fp,"%c%c%c%c%c%c",0x00+opl_dbg_maxchip, type, clock&0xff, (clock/0x100)&0xff, (clock/0x10000)&0xff, (clock/0x1000000)&0xff); opl_dbg_maxchip++; } #endif return OPL; } /* ---------- Destroy one of vietual YM3812 ---------- */ void OPLDestroy(FM_OPL *OPL) { #ifdef OPL_OUTPUT_LOG if(opl_dbg_fp) { fclose(opl_dbg_fp); opl_dbg_fp = NULL; } #endif OPL_UnLockTable(); free(OPL); } /* ---------- Option handlers ---------- */ void OPLSetTimerHandler(FM_OPL *OPL,OPL_TIMERHANDLER TimerHandler,int channelOffset) { OPL->TimerHandler = TimerHandler; OPL->TimerParam = channelOffset; } void OPLSetIRQHandler(FM_OPL *OPL,OPL_IRQHANDLER IRQHandler,int param) { OPL->IRQHandler = IRQHandler; OPL->IRQParam = param; } void OPLSetUpdateHandler(FM_OPL *OPL,OPL_UPDATEHANDLER UpdateHandler,int param) { OPL->UpdateHandler = UpdateHandler; OPL->UpdateParam = param; } #if BUILD_Y8950 void OPLSetPortHandler(FM_OPL *OPL,OPL_PORTHANDLER_W PortHandler_w,OPL_PORTHANDLER_R PortHandler_r,int param) { OPL->porthandler_w = PortHandler_w; OPL->porthandler_r = PortHandler_r; OPL->port_param = param; } void OPLSetKeyboardHandler(FM_OPL *OPL,OPL_PORTHANDLER_W KeyboardHandler_w,OPL_PORTHANDLER_R KeyboardHandler_r,int param) { OPL->keyboardhandler_w = KeyboardHandler_w; OPL->keyboardhandler_r = KeyboardHandler_r; OPL->keyboard_param = param; } #endif /* ---------- 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); #ifdef OPL_OUTPUT_LOG if(opl_dbg_fp) { for(opl_dbg_chip=0;opl_dbg_chipaddress,v); } #endif OPLWriteReg(OPL,OPL->address,v); } return OPL->status>>7; } unsigned char OPLRead(FM_OPL *OPL,int a) { if( !(a&1) ) { /* status port */ return OPL->status & (OPL->statusmask|0x80); } /* data port */ 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 LOG(LOG_WAR,("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 LOG(LOG_WAR,("OPL:read unmapped I/O port\n")); } return 0; case 0x1a: /* PCM-DATA */ return 0; } return 0; } int OPLTimerOver(FM_OPL *OPL,int c) { if( c ) { /* Timer B */ OPL_STATUS_SET(OPL,0x20); } 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 */ int 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; }