+++ /dev/null
-/* FCE Ultra - NES/Famicom Emulator
- *
- * Copyright notice for this file:
- * Copyright (C) 2002 Ben Parnell
- *
- * 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
- */
-
-#include "mapinc.h"
-
-#define dopol mapbyte1[0]
-#define gorfus mapbyte1[1]
-#define gorko mapbyte1[2]
-
-static void NamcoSound(int Count);
-static void NamcoSoundHack(void);
-
-static int32 inc;
-void FP_FASTAPASS(1) NamcoIRQHook(int a)
-{
- if(IRQa)
- {
- IRQCount+=a;
- if(IRQCount>=0x7fff)
- {
- X6502_IRQBegin(FCEU_IQEXT);
- IRQa=0;
- IRQCount=0x7fff;
- }
- }
-}
-
-DECLFR(Namco_Read4800)
-{
- uint8 ret=MapperExRAM[dopol&0x7f];
- if(dopol&0x80)
- dopol=(dopol&0x80)|((dopol+1)&0x7f);
- return ret;
-}
-
-DECLFR(Namco_Read5000)
-{
- return(IRQCount);
-}
-
-DECLFR(Namco_Read5800)
-{
- return(IRQCount>>8);
-}
-
-static void FASTAPASS(2) DoNTARAMROM(int w, uint8 V)
-{
- mapbyte2[w]=V;
- //if(V>=0xE0)
- // setntamem(NTARAM+((V&1)<<10), 1, w);
- if((V>=0xE0)) // || ((gorko>>(6+(w>>1)))&1) )
- setntamem(NTARAM+((V&1)<<10), 1, w);
- else
- {
- V&=CHRmask1[0];
- setntamem(VROM+(V<<10), 0, w);
- }
-// else
-// setntamem(NTARAM+((V&1)<<10), 1, w);
-}
-
-static void FixNTAR(void)
-{
- int x;
-
- for(x=0;x<4;x++)
- DoNTARAMROM(x,mapbyte2[x]);
-}
-
-static void FASTAPASS(2) DoCHRRAMROM(int x, uint8 V)
-{
- mapbyte3[x]=V;
- if(!((gorfus>>((x>>2)+6))&1) && (V>=0xE0))
- VRAM_BANK1(x<<10,V&7);
- else
- VROM_BANK1(x<<10,V);
-}
-
-static void FixCRR(void)
-{
- int x;
- for(x=0;x<8;x++)
- DoCHRRAMROM(x,mapbyte3[x]);
-}
-
-static DECLFW(Mapper19_write)
-{
- A&=0xF800;
-
- if(A>=0x8000 && A<=0xb800)
- DoCHRRAMROM((A-0x8000)>>11,V);
- else if(A>=0xC000 && A<=0xd800)
- DoNTARAMROM((A-0xC000)>>11,V);
- else switch(A)
- {
- case 0x4800:
- if(dopol&0x40)
- {
- if(FSettings.SndRate)
- {
- NamcoSoundHack();
- GameExpSound.Fill=NamcoSound;
- }
- }
- MapperExRAM[dopol&0x7f]=V;
- if(dopol&0x80)
- dopol=(dopol&0x80)|((dopol+1)&0x7f);
- break;
-
- case 0xf800: dopol=V;break;
- case 0x5000: IRQCount&=0xFF00;IRQCount|=V;X6502_IRQEnd(FCEU_IQEXT);break;
- case 0x5800: IRQCount&=0x00ff;IRQCount|=(V&0x7F)<<8;
- IRQa=V&0x80;
- X6502_IRQEnd(FCEU_IQEXT);
- break;
-
- case 0xE000:gorko=V&0xC0;
- //FixNTAR();
- ROM_BANK8(0x8000,V);
- X6502_Rebase();
- break;
- case 0xE800:gorfus=V&0xC0;
- FixCRR();
- ROM_BANK8(0xA000,V);
- X6502_Rebase();
- break;
- case 0xF000:
- ROM_BANK8(0xC000,V);
- X6502_Rebase();
- break;
- }
-}
-
-static int dwave=0;
-static void DoNamcoSound(uint32 *Wave, int Count);
-
-static void NamcoSoundHack(void)
-{
- int32 z,a;
-
- z=((SOUNDTS<<16)/soundtsinc)>>4;
- a=z-dwave;
- if(a)
- DoNamcoSound(&Wave[dwave], a);
- dwave+=a;
-}
-
-static void NamcoSound(int Count)
-{
- int32 z,a;
-
- z=((SOUNDTS<<16)/soundtsinc)>>4;
- a=z-dwave;
- if(a)
- DoNamcoSound(&Wave[dwave], a);
- dwave=0;
-}
-
-static uint8 PlayIndex[8];
-static int32 vcount[8];
-
-static void DoNamcoSound(uint32 *Wave, int Count)
-{
- int P,V;
-
-
- //FCEU_DispMessage("%d",MapperExRAM[0x7F]>>4);
- for(P=7;P>=7-((MapperExRAM[0x7F]>>4)&7);P--)
- {
- if((MapperExRAM[0x44+(P<<3)]&0xE0) && (MapperExRAM[0x47+(P<<3)]&0xF))
- {
- uint32 freq;
- int32 vco;
- uint32 duff,duff2,lengo,envelope;
- //uint64 ta;
-
- vco=vcount[P];
- freq=MapperExRAM[0x40+(P<<3)];
- freq|=MapperExRAM[0x42+(P<<3)]<<8;
- freq|=(MapperExRAM[0x44+(P<<3)]&3)<<16;
-
- if(!freq) continue;
-
- {
- int c=((MapperExRAM[0x7F]>>4)&7)+1;
-
- inc=(long double)(FSettings.SndRate<<15)/((long double)freq*
- 21477272/((long double)0x400000*c*45));
- }
-
- envelope=((MapperExRAM[0x47+(P<<3)]&0xF)<<18)/15;
- duff=MapperExRAM[(((MapperExRAM[0x46+(P<<3)]+PlayIndex[P])>>1)&0xFF)];
- if((MapperExRAM[0x46+(P<<3)]+PlayIndex[P])&1)
- duff>>=4;
- duff&=0xF;
- duff2=(duff*envelope)>>14;
-
- lengo=((8-((MapperExRAM[0x44+(P<<3)]>>2)&7)))<<2;
- for(V=0;V<Count OVERSAMPLE;V++)
- {
- if(vco>=inc)
- {
- PlayIndex[P]++;
- if(PlayIndex[P]>=lengo)
- PlayIndex[P]=0;
- vco-=inc;
- duff=MapperExRAM[(((MapperExRAM[0x46+(P<<3)]+PlayIndex[P])&0xFF)>>1)];
- if((MapperExRAM[0x46+(P<<3)]+PlayIndex[P])&1)
- duff>>=4;
- duff&=0xF;
- duff2=(duff*envelope)>>14;
- }
- Wave[V>>4]+=duff2;
- vco+=0x8000;
- }
- vcount[P]=vco;
- }
- }
-}
-
-static void Mapper19_StateRestore(int version)
-{
- FixNTAR();
- if(version>=80)
- FixCRR();
-}
-
-static void M19SC(void)
-{
- if(FSettings.SndRate)
- Mapper19_ESI();
-}
-
-void Mapper19_ESI(void)
-{
- GameExpSound.RChange=M19SC;
- SetWriteHandler(0xf800,0xffff,Mapper19_write);
- SetWriteHandler(0x4800,0x4fff,Mapper19_write);
- SetReadHandler(0x4800,0x4fff,Namco_Read4800);
-}
-
-void Mapper19_init(void)
-{
- if(!Mirroring)
- {
- DoNTARAMROM(0,0xE0);
- DoNTARAMROM(1,0xE0);
- DoNTARAMROM(2,0xE1);
- DoNTARAMROM(3,0xE1);
- }
- else
- {
- DoNTARAMROM(0,0xE0);
- DoNTARAMROM(2,0xE0);
- DoNTARAMROM(1,0xE1);
- DoNTARAMROM(3,0xE1);
- }
- VROM_BANK8(~0);
- SetWriteHandler(0x8000,0xffff,Mapper19_write);
- SetWriteHandler(0x4020,0x5fff,Mapper19_write);
- SetReadHandler(0x4800,0x4fff,Namco_Read4800);
- SetReadHandler(0x5000,0x57ff,Namco_Read5000);
- SetReadHandler(0x5800,0x5fff,Namco_Read5800);
-
- MapIRQHook=NamcoIRQHook;
- MapStateRestore=Mapper19_StateRestore;
- GameExpSound.RChange=M19SC;
- if(FSettings.SndRate)
- Mapper19_ESI();
- gorfus=0xFF;
-}
-
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