/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
* Copyright (C) 2002 Xodnizel
*
* 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"
static uint16 IRQCount;
static uint8 IRQa;
static uint8 WRAM[8192];
static uint8 IRAM[128];
static DECLFR(AWRAM)
{
return(WRAM[A-0x6000]);
}
static DECLFW(BWRAM)
{
WRAM[A-0x6000]=V;
}
void Mapper19_ESI(void);
static uint8 NTAPage[4];
static uint8 dopol;
static uint8 gorfus;
static uint8 gorko;
static void NamcoSound(int Count);
static void NamcoSoundHack(void);
static void DoNamcoSound(int32 *Wave, int Count);
static void DoNamcoSoundHQ(void);
static void SyncHQ(int32 ts);
static int is210; /* Lesser mapper. */
static uint8 PRG[3];
static uint8 CHR[8];
static SFORMAT N106_StateRegs[]={
{PRG,3,"PRG"},
{CHR,8,"CHR"},
{NTAPage,4,"NTA"},
{0}
};
static void SyncPRG(void)
{
setprg8(0x8000,PRG[0]);
setprg8(0xa000,PRG[1]);
setprg8(0xc000,PRG[2]);
setprg8(0xe000,0x3F);
}
static void FP_FASTAPASS(1) NamcoIRQHook(int a)
{
if(IRQa)
{
IRQCount+=a;
if(IRQCount>=0x7FFF)
{
X6502_IRQBegin(FCEU_IQEXT);
IRQa=0;
IRQCount=0x7FFF; //7FFF;
}
}
}
static DECLFR(Namco_Read4800)
{
uint8 ret=IRAM[dopol&0x7f];
/* Maybe I should call NamcoSoundHack() here? */
if(!fceuindbg)
if(dopol&0x80)
dopol=(dopol&0x80)|((dopol+1)&0x7f);
return ret;
}
static DECLFR(Namco_Read5000)
{
return(IRQCount);
}
static DECLFR(Namco_Read5800)
{
return(IRQCount>>8);
}
static void FASTAPASS(2) DoNTARAMROM(int w, uint8 V)
{
NTAPage[w]=V;
if(V>=0xE0)
setntamem(NTARAM+((V&1)<<10), 1, w);
else
{
V&=CHRmask1[0];
setntamem(CHRptr[0]+(V<<10), 0, w);
}
}
static void FixNTAR(void)
{
int x;
for(x=0;x<4;x++)
DoNTARAMROM(x,NTAPage[x]);
}
static void FASTAPASS(2) DoCHRRAMROM(int x, uint8 V)
{
CHR[x]=V;
if(!is210 && !((gorfus>>((x>>2)+6))&1) && (V>=0xE0))
{
// printf("BLAHAHA: %d, %02x\n",x,V);
//setchr1r(0x10,x<<10,V&7);
}
else
setchr1(x<<10,V);
}
static void FixCRR(void)
{
int x;
for(x=0;x<8;x++)
DoCHRRAMROM(x,CHR[x]);
}
static DECLFW(Mapper19C0D8_write)
{
DoNTARAMROM((A-0xC000)>>11,V);
}
static uint32 FreqCache[8];
static uint32 EnvCache[8];
static uint32 LengthCache[8];
static void FixCache(int a,int V)
{
int w=(a>>3)&0x7;
switch(a&0x07)
{
case 0x00:FreqCache[w]&=~0x000000FF;FreqCache[w]|=V;break;
case 0x02:FreqCache[w]&=~0x0000FF00;FreqCache[w]|=V<<8;break;
case 0x04:FreqCache[w]&=~0x00030000;FreqCache[w]|=(V&3)<<16;
LengthCache[w]=(8-((V>>2)&7))<<2;
break;
case 0x07:EnvCache[w]=(double)(V&0xF)*576716;break;
}
}
static DECLFW(Mapper19_write)
{
A&=0xF800;
if(A>=0x8000 && A<=0xb800)
DoCHRRAMROM((A-0x8000)>>11,V);
else switch(A)
{
case 0x4800:
if(dopol&0x40)
{
if(FSettings.SndRate)
{
NamcoSoundHack();
GameExpSound.Fill=NamcoSound;
GameExpSound.HiFill=DoNamcoSoundHQ;
GameExpSound.HiSync=SyncHQ;
}
FixCache(dopol,V);
}
IRAM[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;
PRG[0]=V&0x3F;
SyncPRG();
break;
case 0xE800:
gorfus=V&0xC0;
FixCRR();
PRG[1]=V&0x3F;
SyncPRG();
break;
case 0xF000:
PRG[2]=V&0x3F;
SyncPRG();
break;
}
}
static int dwave=0;
static void NamcoSoundHack(void)
{
int32 z,a;
if(FSettings.soundq>=1)
{
DoNamcoSoundHQ();
return;
}
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 uint32 PlayIndex[8];
static int32 vcount[8];
static int32 CVBC;
#define TOINDEX (16+1)
// 16:15
static void SyncHQ(int32 ts)
{
CVBC=ts;
}
/* Things to do:
1 Read freq low
2 Read freq mid
3 Read freq high
4 Read envelope
...?
*/
static INLINE uint32 FetchDuff(uint32 P, uint32 envelope)
{
uint32 duff;
duff=IRAM[((IRAM[0x46+(P<<3)]+(PlayIndex[P]>>TOINDEX))&0xFF)>>1];
if((IRAM[0x46+(P<<3)]+(PlayIndex[P]>>TOINDEX))&1)
duff>>=4;
duff&=0xF;
duff=(duff*envelope)>>16;
return(duff);
}
static void DoNamcoSoundHQ(void)
{
uint32 V; //mbg merge 7/17/06 made uint32
int32 P;
int32 cyclesuck=(((IRAM[0x7F]>>4)&7)+1)*15;
for(P=7;P>=(7-((IRAM[0x7F]>>4)&7));P--)
{
if((IRAM[0x44+(P<<3)]&0xE0) && (IRAM[0x47+(P<<3)]&0xF))
{
uint32 freq;
int32 vco;
uint32 duff2,lengo,envelope;
vco=vcount[P];
freq=FreqCache[P];
envelope=EnvCache[P];
lengo=LengthCache[P];
duff2=FetchDuff(P,envelope);
for(V=CVBC<<1;V<SOUNDTS<<1;V++)
{
WaveHi[V>>1]+=duff2;
if(!vco)
{
PlayIndex[P]+=freq;
while((PlayIndex[P]>>TOINDEX)>=lengo) PlayIndex[P]-=lengo<<TOINDEX;
duff2=FetchDuff(P,envelope);
vco=cyclesuck;
}
vco--;
}
vcount[P]=vco;
}
}
CVBC=SOUNDTS;
}
static void DoNamcoSound(int32 *Wave, int Count)
{
int P,V;
for(P=7;P>=7-((IRAM[0x7F]>>4)&7);P--)
{
if((IRAM[0x44+(P<<3)]&0xE0) && (IRAM[0x47+(P<<3)]&0xF))
{
int32 inc;
uint32 freq;
int32 vco;
uint32 duff,duff2,lengo,envelope;
vco=vcount[P];
freq=FreqCache[P];
envelope=EnvCache[P];
lengo=LengthCache[P];
if(!freq) {/*printf("Ack");*/ continue;}
{
int c=((IRAM[0x7F]>>4)&7)+1;
inc=(long double)(FSettings.SndRate<<15)/((long double)freq*21477272/((long double)0x400000*c*45));
}
duff=IRAM[(((IRAM[0x46+(P<<3)]+PlayIndex[P])&0xFF)>>1)];
if((IRAM[0x46+(P<<3)]+PlayIndex[P])&1)
duff>>=4;
duff&=0xF;
duff2=(duff*envelope)>>19;
for(V=0;V<Count*16;V++)
{
if(vco>=inc)
{
PlayIndex[P]++;
if(PlayIndex[P]>=lengo)
PlayIndex[P]=0;
vco-=inc;
duff=IRAM[(((IRAM[0x46+(P<<3)]+PlayIndex[P])&0xFF)>>1)];
if((IRAM[0x46+(P<<3)]+PlayIndex[P])&1)
duff>>=4;
duff&=0xF;
duff2=(duff*envelope)>>19;
}
Wave[V>>4]+=duff2;
vco+=0x8000;
}
vcount[P]=vco;
}
}
}
static void Mapper19_StateRestore(int version)
{
int x;
SyncPRG();
FixNTAR();
FixCRR();
for(x=0x40;x<0x80;x++)
FixCache(x,IRAM[x]);
}
static void M19SC(void)
{
if(FSettings.SndRate)
Mapper19_ESI();
}
void Mapper19_ESI(void)
{
GameExpSound.RChange=M19SC;
memset(vcount,0,sizeof(vcount));
memset(PlayIndex,0,sizeof(PlayIndex));
CVBC=0;
}
void NSFN106_Init(void)
{
SetWriteHandler(0xf800,0xffff,Mapper19_write);
SetWriteHandler(0x4800,0x4fff,Mapper19_write);
SetReadHandler(0x4800,0x4fff,Namco_Read4800);
Mapper19_ESI();
}
static int battery=0;
static void N106_Power(void)
{
int x;
SetReadHandler(0x8000,0xFFFF,CartBR);
SetWriteHandler(0x8000,0xffff,Mapper19_write);
SetWriteHandler(0x4020,0x5fff,Mapper19_write);
if(!is210)
{
SetWriteHandler(0xc000,0xdfff,Mapper19C0D8_write);
SetReadHandler(0x4800,0x4fff,Namco_Read4800);
SetReadHandler(0x5000,0x57ff,Namco_Read5000);
SetReadHandler(0x5800,0x5fff,Namco_Read5800);
NTAPage[0]=NTAPage[1]=NTAPage[2]=NTAPage[3]=0xFF;
FixNTAR();
}
SetReadHandler(0x6000,0x7FFF,AWRAM);
SetWriteHandler(0x6000,0x7FFF,BWRAM);
FCEU_CheatAddRAM(8,0x6000,WRAM);
gorfus=0xFF;
SyncPRG();
FixCRR();
if(!battery)
{
FCEU_dwmemset(WRAM,0,8192);
FCEU_dwmemset(IRAM,0,128);
}
for(x=0x40;x<0x80;x++)
FixCache(x,IRAM[x]);
}
void Mapper19_Init(CartInfo *info)
{
is210=0;
battery=info->battery;
info->Power=N106_Power;
MapIRQHook=NamcoIRQHook;
GameStateRestore=Mapper19_StateRestore;
GameExpSound.RChange=M19SC;
if(FSettings.SndRate)
Mapper19_ESI();
AddExState(WRAM, 8192, 0, "WRAM");
AddExState(IRAM, 128, 0, "WRAM");
AddExState(N106_StateRegs, ~0, 0, 0);
if(info->battery)
{
info->SaveGame[0]=WRAM;
info->SaveGameLen[0]=8192;
info->SaveGame[1]=IRAM;
info->SaveGameLen[1]=128;
}
}
static void Mapper210_StateRestore(int version)
{
SyncPRG();
FixCRR();
}
void Mapper210_Init(CartInfo *info)
{
is210=1;
GameStateRestore=Mapper210_StateRestore;
info->Power=N106_Power;
AddExState(WRAM, 8192, 0, "WRAM");
}