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fceugx/source/fceultra/boards/mmc5.cpp
dborth 2c662616c5 sync to FCEUX svn
2009-09-15 08:20:48 +00:00

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/* 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
*/
/* None of this code should use any of the iNES bank switching wrappers. */
#include "mapinc.h"
static void (*sfun)(int P);
static void (*psfun)(void);
void MMC5RunSound(int Count);
void MMC5RunSoundHQ(void);
static INLINE void MMC5SPRVROM_BANK1(uint32 A,uint32 V)
{
if(CHRptr[0])
{
V&=CHRmask1[0];
MMC5SPRVPage[(A)>>10]=&CHRptr[0][(V)<<10]-(A);
}
}
static INLINE void MMC5BGVROM_BANK1(uint32 A,uint32 V) {if(CHRptr[0]){V&=CHRmask1[0];MMC5BGVPage[(A)>>10]=&CHRptr[0][(V)<<10]-(A);}}
static INLINE void MMC5SPRVROM_BANK2(uint32 A,uint32 V) {if(CHRptr[0]){V&=CHRmask2[0];MMC5SPRVPage[(A)>>10]=MMC5SPRVPage[((A)>>10)+1]=&CHRptr[0][(V)<<11]-(A);}}
static INLINE void MMC5BGVROM_BANK2(uint32 A,uint32 V) {if(CHRptr[0]){V&=CHRmask2[0];MMC5BGVPage[(A)>>10]=MMC5BGVPage[((A)>>10)+1]=&CHRptr[0][(V)<<11]-(A);}}
static INLINE void MMC5SPRVROM_BANK4(uint32 A,uint32 V) {if(CHRptr[0]){V&=CHRmask4[0];MMC5SPRVPage[(A)>>10]=MMC5SPRVPage[((A)>>10)+1]= MMC5SPRVPage[((A)>>10)+2]=MMC5SPRVPage[((A)>>10)+3]=&CHRptr[0][(V)<<12]-(A);}}
static INLINE void MMC5BGVROM_BANK4(uint32 A,uint32 V) {if(CHRptr[0]){V&=CHRmask4[0];MMC5BGVPage[(A)>>10]=MMC5BGVPage[((A)>>10)+1]=MMC5BGVPage[((A)>>10)+2]=MMC5BGVPage[((A)>>10)+3]=&CHRptr[0][(V)<<12]-(A);}}
static INLINE void MMC5SPRVROM_BANK8(uint32 V) {if(CHRptr[0]){V&=CHRmask8[0];MMC5SPRVPage[0]=MMC5SPRVPage[1]=MMC5SPRVPage[2]=MMC5SPRVPage[3]=MMC5SPRVPage[4]=MMC5SPRVPage[5]=MMC5SPRVPage[6]=MMC5SPRVPage[7]=&CHRptr[0][(V)<<13];}}
static INLINE void MMC5BGVROM_BANK8(uint32 V) {if(CHRptr[0]){V&=CHRmask8[0];MMC5BGVPage[0]=MMC5BGVPage[1]=MMC5BGVPage[2]=MMC5BGVPage[3]=MMC5BGVPage[4]=MMC5BGVPage[5]=MMC5BGVPage[6]=MMC5BGVPage[7]=&CHRptr[0][(V)<<13];}}
static uint8 PRGBanks[4];
static uint8 WRAMPage;
static uint16 CHRBanksA[8], CHRBanksB[4];
static uint8 WRAMMaskEnable[2];
uint8 mmc5ABMode; /* A=0, B=1 */
static uint8 IRQScanline,IRQEnable;
static uint8 CHRMode, NTAMirroring, NTFill, ATFill;
static uint8 MMC5IRQR;
static uint8 MMC5LineCounter;
static uint8 mmc5psize, mmc5vsize;
static uint8 mul[2];
static uint8 *WRAM=NULL;
static uint8 *MMC5fill=NULL;
static uint8 *ExRAM=NULL;
static uint8 MMC5WRAMsize;
static uint8 MMC5WRAMIndex[8];
static uint8 MMC5ROMWrProtect[4];
static uint8 MMC5MemIn[5];
static void MMC5CHRA(void);
static void MMC5CHRB(void);
typedef struct __cartdata {
uint32 crc32;
uint8 size;
} cartdata;
#define Sprite16 (PPU[0]&0x20) //Sprites 8x16/8x8
//#define MMC5SPRVRAMADR(V) &MMC5SPRVPage[(V)>>10][(V)]
static inline uint8 * MMC5BGVRAMADR(uint32 A)
{
if(!Sprite16) {
if(mmc5ABMode==0)
return &MMC5SPRVPage[(A)>>10][(A)];
else
return &MMC5BGVPage[(A)>>10][(A)];
} else return &MMC5BGVPage[(A)>>10][(A)];
}
static void mmc5_PPUWrite(uint32 A, uint8 V) {
uint32 tmp = A;
extern uint8 PALRAM[0x20];
if(tmp>=0x3F00)
{
// hmmm....
if(!(tmp&0xf))
PALRAM[0x00]=PALRAM[0x04]=PALRAM[0x08]=PALRAM[0x0C]=V&0x3F;
else if(tmp&3) PALRAM[(tmp&0x1f)]=V&0x3f;
}
else if(tmp<0x2000)
{
if(PPUCHRRAM&(1<<(tmp>>10)))
VPage[tmp>>10][tmp]=V;
}
else
{
if(PPUNTARAM&(1<<((tmp&0xF00)>>10)))
vnapage[((tmp&0xF00)>>10)][tmp&0x3FF]=V;
}
}
uint8 FASTCALL mmc5_PPURead(uint32 A) {
if(A<0x2000)
{
if(ppuphase == PPUPHASE_BG)
return *MMC5BGVRAMADR(A);
else return MMC5SPRVPage[(A)>>10][(A)];
}
else
{
return vnapage[(A>>10)&0x3][A&0x3FF];
}
}
// ELROM seems to have 8KB of RAM
// ETROM seems to have 16KB of WRAM
// EWROM seems to have 32KB of WRAM
cartdata MMC5CartList[]=
{
{0x9c18762b,2}, /* L'Empereur */
{0x26533405,2},
{0x6396b988,2},
{0xaca15643,2}, /* Uncharted Waters */
{0xfe3488d1,2}, /* Dai Koukai Jidai */
{0x15fe6d0f,2}, /* BKAC */
{0x39f2ce4b,2}, /* Suikoden */
{0x8ce478db,2}, /* Nobunaga's Ambition 2 */
{0xeee9a682,2},
{0xf9b4240f,2},
{0x1ced086f,2}, /* Ishin no Arashi */
{0xf540677b,4}, /* Nobunaga...Bushou Fuuun Roku */
{0x6f4e4312,4}, /* Aoki Ookami..Genchou */
{0xf011e490,4}, /* Romance of the 3 Kingdoms 2 */
{0x184c2124,4}, /* Sangokushi 2 */
{0xee8e6553,4},
};
#define MMC5_NOCARTS (sizeof(MMC5CartList)/sizeof(MMC5CartList[0]))
int DetectMMC5WRAMSize(uint32 crc32)
{
int x;
for(x=0;x<MMC5_NOCARTS;x++) {
if(crc32==MMC5CartList[x].crc32) {
FCEU_printf(" >8KB external WRAM present. Use UNIF if you hack the ROM image.\n");
return(MMC5CartList[x].size*8);
}
}
//mbg 04-aug-08 - previously, this was returning 8KB
//but I changed it to return 64 because unlisted carts are probably homebrews, and they should probably use 64 (why not use it all?)
//ch4 10-dec-08 - then f***ng for what all this shit above? let's give em all this 64k shit! Damn
// homebrew must use it's own emulators or standart features.
//adelikat 20-dec-08 - reverting back to return 64, sounds like it was changed back to 8 simply on principle. FCEUX is all encompassing, and that include
//rom-hacking. We want it to be the best emulator for such purposes. So unless return 64 harms compatibility with anything else, I see now reason not to have it
//mbg 29-mar-09 - I should note that mmc5 is in principle capable of 64KB, even if no real carts ever supported it.
//This does not in principle break any games which share this mapper, and it should be OK for homebrew.
//if there are games which need 8KB instead of 64KB default then lets add them to the list
return 64;
}
static void BuildWRAMSizeTable(void)
{
int x;
for(x=0;x<8;x++)
{
switch(MMC5WRAMsize)
{
case 0: MMC5WRAMIndex[x]=255; break; //X,X,X,X,X,X,X,X
case 1: MMC5WRAMIndex[x]=(x>3)?255:0; break; //0,0,0,0,X,X,X,X
case 2: MMC5WRAMIndex[x]=(x&4)>>2; break; //0,0,0,0,1,1,1,1
case 4: MMC5WRAMIndex[x]=(x>3)?255:(x&3); break; //0,1,2,3,X,X,X,X
case 8: MMC5WRAMIndex[x]=x; break; //0,1,2,3,4,5,6,7,8
//mbg 8/6/08 - i added this to support 64KB of wram
//now, I have at least one example (laser invasion) which actually uses size 1 but isnt in the crc list
//so, whereas before my change on 8/4/08 we would have selected size 1, now we select size 8
//this means that we could have just introduced an emulation bug, in case those games happened to
//address, say, page 3. with size 1 that would resolve to [0] but in size 8 it resolves to [3].
//so, you know what to do if there are problems.
}
}
}
static void MMC5CHRA(void)
{
int x;
switch(mmc5vsize&3)
{
case 0: setchr8(CHRBanksA[7]);
MMC5SPRVROM_BANK8(CHRBanksA[7]);
break;
case 1: setchr4(0x0000,CHRBanksA[3]);
setchr4(0x1000,CHRBanksA[7]);
MMC5SPRVROM_BANK4(0x0000,CHRBanksA[3]);
MMC5SPRVROM_BANK4(0x1000,CHRBanksA[7]);
break;
case 2: setchr2(0x0000,CHRBanksA[1]);
setchr2(0x0800,CHRBanksA[3]);
setchr2(0x1000,CHRBanksA[5]);
setchr2(0x1800,CHRBanksA[7]);
MMC5SPRVROM_BANK2(0x0000,CHRBanksA[1]);
MMC5SPRVROM_BANK2(0x0800,CHRBanksA[3]);
MMC5SPRVROM_BANK2(0x1000,CHRBanksA[5]);
MMC5SPRVROM_BANK2(0x1800,CHRBanksA[7]);
break;
case 3: for(x=0;x<8;x++)
{
setchr1(x<<10,CHRBanksA[x]);
MMC5SPRVROM_BANK1(x<<10,CHRBanksA[x]);
}
break;
}
}
static void MMC5CHRB(void)
{
int x;
switch(mmc5vsize&3)
{
case 0: setchr8(CHRBanksB[3]);
MMC5BGVROM_BANK8(CHRBanksB[3]);
break;
case 1: setchr4(0x0000,CHRBanksB[3]);
setchr4(0x1000,CHRBanksB[3]);
MMC5BGVROM_BANK4(0x0000,CHRBanksB[3]);
MMC5BGVROM_BANK4(0x1000,CHRBanksB[3]);
break;
case 2: setchr2(0x0000,CHRBanksB[1]);
setchr2(0x0800,CHRBanksB[3]);
setchr2(0x1000,CHRBanksB[1]);
setchr2(0x1800,CHRBanksB[3]);
MMC5BGVROM_BANK2(0x0000,CHRBanksB[1]);
MMC5BGVROM_BANK2(0x0800,CHRBanksB[3]);
MMC5BGVROM_BANK2(0x1000,CHRBanksB[1]);
MMC5BGVROM_BANK2(0x1800,CHRBanksB[3]);
break;
case 3: for(x=0;x<8;x++)
{
setchr1(x<<10,CHRBanksB[x&3]);
MMC5BGVROM_BANK1(x<<10,CHRBanksB[x&3]);
}
break;
}
}
static void MMC5WRAM(uint32 A, uint32 V)
{
//printf("%02x\n",V);
V=MMC5WRAMIndex[V&7];
if(V!=255)
{
setprg8r(0x10,A,V);
MMC5MemIn[(A-0x6000)>>13]=1;
}
else
MMC5MemIn[(A-0x6000)>>13]=0;
}
static void MMC5PRG(void)
{
int x;
switch(mmc5psize&3)
{
case 0: MMC5ROMWrProtect[0]=MMC5ROMWrProtect[1]=
MMC5ROMWrProtect[2]=MMC5ROMWrProtect[3]=1;
setprg32(0x8000,((PRGBanks[1]&0x7F)>>2));
for(x=0;x<4;x++)
MMC5MemIn[1+x]=1;
break;
case 1: if(PRGBanks[1]&0x80)
{
MMC5ROMWrProtect[0]=MMC5ROMWrProtect[1]=1;
setprg16(0x8000,(PRGBanks[1]>>1));
MMC5MemIn[1]=MMC5MemIn[2]=1;
}
else
{
MMC5ROMWrProtect[0]=MMC5ROMWrProtect[1]=0;
MMC5WRAM(0x8000,PRGBanks[1]&7&0xFE);
MMC5WRAM(0xA000,(PRGBanks[1]&7&0xFE)+1);
}
MMC5MemIn[3]=MMC5MemIn[4]=1;
MMC5ROMWrProtect[2]=MMC5ROMWrProtect[3]=1;
setprg16(0xC000,(PRGBanks[3]&0x7F)>>1);
break;
case 2: if(PRGBanks[1]&0x80)
{
MMC5MemIn[1]=MMC5MemIn[2]=1;
MMC5ROMWrProtect[0]=MMC5ROMWrProtect[1]=1;
setprg16(0x8000,(PRGBanks[1]&0x7F)>>1);
}
else
{
MMC5ROMWrProtect[0]=MMC5ROMWrProtect[1]=0;
MMC5WRAM(0x8000,PRGBanks[1]&7&0xFE);
MMC5WRAM(0xA000,(PRGBanks[1]&7&0xFE)+1);
}
if(PRGBanks[2]&0x80)
{
MMC5ROMWrProtect[2]=1;
MMC5MemIn[3]=1;
setprg8(0xC000,PRGBanks[2]&0x7F);
}
else
{
MMC5ROMWrProtect[2]=0;
MMC5WRAM(0xC000,PRGBanks[2]&7);
}
MMC5MemIn[4]=1;
MMC5ROMWrProtect[3]=1;
setprg8(0xE000,PRGBanks[3]&0x7F);
break;
case 3: for(x=0;x<3;x++)
if(PRGBanks[x]&0x80)
{
MMC5ROMWrProtect[x]=1;
setprg8(0x8000+(x<<13),PRGBanks[x]&0x7F);
MMC5MemIn[1+x]=1;
}
else
{
MMC5ROMWrProtect[x]=0;
MMC5WRAM(0x8000+(x<<13),PRGBanks[x]&7);
}
MMC5MemIn[4]=1;
MMC5ROMWrProtect[3]=1;
setprg8(0xE000,PRGBanks[3]&0x7F);
break;
}
}
static DECLFW(Mapper5_write)
{
if(A>=0x5120&&A<=0x5127)
{
mmc5ABMode = 0;
CHRBanksA[A&7]=V | ((MMC50x5130&0x3)<<8); //if we had a test case for this then we could test this, but it hasnt been verified
//CHRBanksA[A&7]=V;
MMC5CHRA();
}
else switch(A)
{
case 0x5105: {
int x;
for(x=0;x<4;x++)
{
switch((V>>(x<<1))&3)
{
case 0:
PPUNTARAM|=1<<x;vnapage[x]=NTARAM;break;
case 1:
PPUNTARAM|=1<<x;vnapage[x]=NTARAM+0x400;break;
case 2:
PPUNTARAM|=1<<x;vnapage[x]=ExRAM;break;
case 3:
PPUNTARAM&=~(1<<x);vnapage[x]=MMC5fill;break;
}
}
}
NTAMirroring=V;
break;
case 0x5113: WRAMPage=V;MMC5WRAM(0x6000,V&7);break;
case 0x5100: mmc5psize=V;MMC5PRG();break;
case 0x5101: mmc5vsize=V;
if(!mmc5ABMode)
{ MMC5CHRB();MMC5CHRA();}
else
{ MMC5CHRA();MMC5CHRB();}
break;
case 0x5114:
case 0x5115:
case 0x5116:
case 0x5117: PRGBanks[A&3]=V;MMC5PRG();break;
case 0x5128:
case 0x5129:
case 0x512a:
case 0x512b: mmc5ABMode=1;
CHRBanksB[A&3]=V;
MMC5CHRB();
break;
case 0x5102: WRAMMaskEnable[0]=V;break;
case 0x5103: WRAMMaskEnable[1]=V;break;
case 0x5104: CHRMode=V;MMC5HackCHRMode=V&3;break;
case 0x5106: if(V!=NTFill)
{
uint32 t;
t=V|(V<<8)|(V<<16)|(V<<24);
FCEU_dwmemset(MMC5fill,t,0x3c0);
}
NTFill=V;
break;
case 0x5107: if(V!=ATFill)
{
unsigned char moop;
uint32 t;
moop=V|(V<<2)|(V<<4)|(V<<6);
t=moop|(moop<<8)|(moop<<16)|(moop<<24);
FCEU_dwmemset(MMC5fill+0x3c0,t,0x40);
}
ATFill=V;
break;
case 0x5130: MMC50x5130=V;break;
case 0x5200: MMC5HackSPMode=V;break;
case 0x5201: MMC5HackSPScroll=(V>>3)&0x1F;break;
case 0x5202: MMC5HackSPPage=V&0x3F;break;
case 0x5203: X6502_IRQEnd(FCEU_IQEXT);IRQScanline=V;break;
case 0x5204: X6502_IRQEnd(FCEU_IQEXT);IRQEnable=V&0x80;break;
case 0x5205: mul[0]=V;break;
case 0x5206: mul[1]=V;break;
}
}
static DECLFR(MMC5_ReadROMRAM)
{
if(MMC5MemIn[(A-0x6000)>>13])
return Page[A>>11][A];
else
return X.DB;
}
static DECLFW(MMC5_WriteROMRAM)
{
if(A>=0x8000)
if(MMC5ROMWrProtect[(A-0x8000)>>13]) return;
if(MMC5MemIn[(A-0x6000)>>13])
if(((WRAMMaskEnable[0]&3)|((WRAMMaskEnable[1]&3)<<2)) == 6)
Page[A>>11][A]=V;
}
static DECLFW(MMC5_ExRAMWr)
{
if(MMC5HackCHRMode!=3)
ExRAM[A&0x3ff]=V;
}
static DECLFR(MMC5_ExRAMRd)
{
/* Not sure if this is correct, so I'll comment it out for now. */
//if(MMC5HackCHRMode>=2)
return ExRAM[A&0x3ff];
//else
// return(X.DB);
}
static DECLFR(MMC5_read)
{
switch(A)
{
case 0x5204: X6502_IRQEnd(FCEU_IQEXT);
{
uint8 x;
x=MMC5IRQR;
if(!fceuindbg)
MMC5IRQR&=0x40;
return x;
}
case 0x5205: return (mul[0]*mul[1]);
case 0x5206: return ((mul[0]*mul[1])>>8);
}
return(X.DB);
}
void MMC5Synco(void)
{
int x;
MMC5PRG();
for(x=0;x<4;x++)
{
switch((NTAMirroring>>(x<<1))&3)
{
case 0:PPUNTARAM|=1<<x;vnapage[x]=NTARAM;break;
case 1:PPUNTARAM|=1<<x;vnapage[x]=NTARAM+0x400;break;
case 2:PPUNTARAM|=1<<x;vnapage[x]=ExRAM;break;
case 3:PPUNTARAM&=~(1<<x);vnapage[x]=MMC5fill;break;
}
}
MMC5WRAM(0x6000,WRAMPage&7);
if(!mmc5ABMode)
{
MMC5CHRB();
MMC5CHRA();
}
else
{
MMC5CHRA();
MMC5CHRB();
}
{
uint32 t;
t=NTFill|(NTFill<<8)|(NTFill<<16)|(NTFill<<24);
FCEU_dwmemset(MMC5fill,t,0x3c0);
}
{
unsigned char moop;
uint32 t;
moop=ATFill|(ATFill<<2)|(ATFill<<4)|(ATFill<<6);
t=moop|(moop<<8)|(moop<<16)|(moop<<24);
FCEU_dwmemset(MMC5fill+0x3c0,t,0x40);
}
X6502_IRQEnd(FCEU_IQEXT);
MMC5HackCHRMode=CHRMode&3;
}
void MMC5_hb(int scanline)
{
if(scanline==240)
{
MMC5LineCounter=0;
MMC5IRQR=0x40;
return;
}
if(MMC5LineCounter<240)
{
if(MMC5LineCounter==IRQScanline)
{
MMC5IRQR|=0x80;
if(IRQEnable&0x80)
X6502_IRQBegin(FCEU_IQEXT);
}
MMC5LineCounter++;
}
if(MMC5LineCounter==240)
MMC5IRQR=0;
}
void MMC5_StateRestore(int version)
{
MMC5Synco();
}
typedef struct {
uint16 wl[2];
uint8 env[2];
uint8 enable;
uint8 running;
uint8 raw;
uint8 rawcontrol;
int32 dcount[2];
int32 BC[3];
int32 vcount[2];
} MMC5APU;
static MMC5APU MMC5Sound;
static void Do5PCM()
{
int32 V;
int32 start,end;
start=MMC5Sound.BC[2];
end=(SOUNDTS<<16)/soundtsinc;
if(end<=start) return;
MMC5Sound.BC[2]=end;
if(!(MMC5Sound.rawcontrol&0x40) && MMC5Sound.raw)
for(V=start;V<end;V++)
Wave[V>>4]+=MMC5Sound.raw<<1;
}
static void Do5PCMHQ()
{
uint32 V; //mbg merge 7/17/06 made uint32
if(!(MMC5Sound.rawcontrol&0x40) && MMC5Sound.raw)
for(V=MMC5Sound.BC[2];V<SOUNDTS;V++)
WaveHi[V]+=MMC5Sound.raw<<5;
MMC5Sound.BC[2]=SOUNDTS;
}
static DECLFW(Mapper5_SW)
{
A&=0x1F;
GameExpSound.Fill=MMC5RunSound;
GameExpSound.HiFill=MMC5RunSoundHQ;
switch(A)
{
case 0x10:if(psfun) psfun();MMC5Sound.rawcontrol=V;break;
case 0x11:if(psfun) psfun();MMC5Sound.raw=V;break;
case 0x0:
case 0x4://printf("%04x:$%02x\n",A,V&0x30);
if(sfun) sfun(A>>2);
MMC5Sound.env[A>>2]=V;
break;
case 0x2:
case 0x6: if(sfun) sfun(A>>2);
MMC5Sound.wl[A>>2]&=~0x00FF;
MMC5Sound.wl[A>>2]|=V&0xFF;
break;
case 0x3:
case 0x7://printf("%04x:$%02x\n",A,V>>3);
MMC5Sound.wl[A>>2]&=~0x0700;
MMC5Sound.wl[A>>2]|=(V&0x07)<<8;
MMC5Sound.running|=1<<(A>>2);
break;
case 0x15:if(sfun)
{
sfun(0);
sfun(1);
}
MMC5Sound.running&=V;
MMC5Sound.enable=V;
//printf("%02x\n",V);
break;
}
}
static void Do5SQ(int P)
{
static int tal[4]={1,2,4,6};
int32 V,amp,rthresh,wl;
int32 start,end;
start=MMC5Sound.BC[P];
end=(SOUNDTS<<16)/soundtsinc;
if(end<=start) return;
MMC5Sound.BC[P]=end;
wl=MMC5Sound.wl[P]+1;
amp=(MMC5Sound.env[P]&0xF)<<4;
rthresh=tal[(MMC5Sound.env[P]&0xC0)>>6];
if(wl>=8 && (MMC5Sound.running&(P+1)))
{
int dc,vc;
wl<<=18;
dc=MMC5Sound.dcount[P];
vc=MMC5Sound.vcount[P];
for(V=start;V<end;V++)
{
if(dc<rthresh)
Wave[V>>4]+=amp;
vc-=nesincsize;
while(vc<=0)
{
vc+=wl;
dc=(dc+1)&7;
}
}
MMC5Sound.dcount[P]=dc;
MMC5Sound.vcount[P]=vc;
}
}
static void Do5SQHQ(int P)
{
static int tal[4]={1,2,4,6};
uint32 V; //mbg merge 7/17/06 made uint32
int32 amp,rthresh,wl;
wl=MMC5Sound.wl[P]+1;
amp=((MMC5Sound.env[P]&0xF)<<8);
rthresh=tal[(MMC5Sound.env[P]&0xC0)>>6];
if(wl>=8 && (MMC5Sound.running&(P+1)))
{
int dc,vc;
wl<<=1;
dc=MMC5Sound.dcount[P];
vc=MMC5Sound.vcount[P];
for(V=MMC5Sound.BC[P];V<SOUNDTS;V++)
{
if(dc<rthresh)
WaveHi[V]+=amp;
vc--;
if(vc<=0) /* Less than zero when first started. */
{
vc=wl;
dc=(dc+1)&7;
}
}
MMC5Sound.dcount[P]=dc;
MMC5Sound.vcount[P]=vc;
}
MMC5Sound.BC[P]=SOUNDTS;
}
void MMC5RunSoundHQ(void)
{
Do5SQHQ(0);
Do5SQHQ(1);
Do5PCMHQ();
}
void MMC5HiSync(int32 ts)
{
int x;
for(x=0;x<3;x++) MMC5Sound.BC[x]=ts;
}
void MMC5RunSound(int Count)
{
int x;
Do5SQ(0);
Do5SQ(1);
Do5PCM();
for(x=0;x<3;x++)
MMC5Sound.BC[x]=Count;
}
void Mapper5_ESI(void)
{
GameExpSound.RChange=Mapper5_ESI;
if(FSettings.SndRate)
{
if(FSettings.soundq>=1)
{
sfun=Do5SQHQ;
psfun=Do5PCMHQ;
}
else
{
sfun=Do5SQ;
psfun=Do5PCM;
}
}
else
{
sfun=0;
psfun=0;
}
memset(MMC5Sound.BC,0,sizeof(MMC5Sound.BC));
memset(MMC5Sound.vcount,0,sizeof(MMC5Sound.vcount));
GameExpSound.HiSync=MMC5HiSync;
}
void NSFMMC5_Init(void)
{
memset(&MMC5Sound,0,sizeof(MMC5Sound));
mul[0]=mul[1]=0;
ExRAM=(uint8*)FCEU_gmalloc(1024);
Mapper5_ESI();
SetWriteHandler(0x5c00,0x5fef,MMC5_ExRAMWr);
SetReadHandler(0x5c00,0x5fef,MMC5_ExRAMRd);
MMC5HackCHRMode=2;
SetWriteHandler(0x5000,0x5015,Mapper5_SW);
SetWriteHandler(0x5205,0x5206,Mapper5_write);
SetReadHandler(0x5205,0x5206,MMC5_read);
}
void NSFMMC5_Close(void)
{
FCEU_gfree(ExRAM);
ExRAM=0;
}
static void GenMMC5Reset(void)
{
int x;
for(x=0;x<4;x++) PRGBanks[x]=~0;
for(x=0;x<8;x++) CHRBanksA[x]=~0;
for(x=0;x<4;x++) CHRBanksB[x]=~0;
WRAMMaskEnable[0]=WRAMMaskEnable[1]=~0;
mmc5psize=mmc5vsize=3;
CHRMode=0;
NTAMirroring=NTFill=ATFill=0xFF;
MMC5Synco();
SetWriteHandler(0x4020,0x5bff,Mapper5_write);
SetReadHandler(0x4020,0x5bff,MMC5_read);
SetWriteHandler(0x5c00,0x5fff,MMC5_ExRAMWr);
SetReadHandler(0x5c00,0x5fff,MMC5_ExRAMRd);
SetWriteHandler(0x6000,0xFFFF,MMC5_WriteROMRAM);
SetReadHandler(0x6000,0xFFFF,MMC5_ReadROMRAM);
SetWriteHandler(0x5000,0x5015,Mapper5_SW);
SetWriteHandler(0x5205,0x5206,Mapper5_write);
SetReadHandler(0x5205,0x5206,MMC5_read);
//GameHBIRQHook=MMC5_hb;
FCEU_CheatAddRAM(8,0x6000,WRAM);
FCEU_CheatAddRAM(1,0x5c00,ExRAM);
}
static SFORMAT MMC5_StateRegs[]={
{ PRGBanks, 4, "PRGB"},
{ CHRBanksA, 16, "CHRA"},
{ CHRBanksB, 8, "CHRB"},
{ &WRAMPage, 1, "WRMP"},
{ WRAMMaskEnable, 2, "WRME"},
{ &mmc5ABMode, 1, "ABMD"},
{ &IRQScanline, 1, "IRQS"},
{ &IRQEnable, 1, "IRQE"},
{ &CHRMode, 1, "CHRM"},
{ &NTAMirroring, 1, "NTAM"},
{ &NTFill, 1, "NTFL"},
{ &ATFill, 1, "ATFL"},
{ &MMC5Sound.wl[0], 2|FCEUSTATE_RLSB, "SDW0"},
{ &MMC5Sound.wl[1], 2|FCEUSTATE_RLSB, "SDW1"},
{ MMC5Sound.env, 2, "SDEV"},
{ &MMC5Sound.enable, 1, "SDEN"},
{ &MMC5Sound.running, 1, "SDRU"},
{ &MMC5Sound.raw, 1, "SDRW"},
{ &MMC5Sound.rawcontrol, 1, "SDRC"},
{0}
};
static void GenMMC5_Init(CartInfo *info, int wsize, int battery)
{
if(wsize)
{
WRAM=(uint8*)FCEU_gmalloc(wsize*1024);
SetupCartPRGMapping(0x10,WRAM,wsize*1024,1);
AddExState(WRAM, wsize*1024, 0, "WRAM");
}
MMC5fill=(uint8*)FCEU_gmalloc(1024);
ExRAM=(uint8*)FCEU_gmalloc(1024);
AddExState(MMC5_StateRegs, ~0, 0, 0);
AddExState(WRAM, wsize*1024, 0, "WRAM");
AddExState(ExRAM, 1024, 0, "ERAM");
AddExState(&MMC5HackSPMode, 1, 0, "SPLM");
AddExState(&MMC5HackSPScroll, 1, 0, "SPLS");
AddExState(&MMC5HackSPPage, 1, 0, "SPLP");
AddExState(&MMC50x5130, 1, 0, "5130");
MMC5WRAMsize=wsize/8;
BuildWRAMSizeTable();
GameStateRestore=MMC5_StateRestore;
info->Power=GenMMC5Reset;
if(battery)
{
info->SaveGame[0]=WRAM;
if(wsize<=16)
info->SaveGameLen[0]=8192;
else
info->SaveGameLen[0]=32768;
}
MMC5HackVROMMask=CHRmask4[0];
MMC5HackExNTARAMPtr=ExRAM;
MMC5Hack=1;
MMC5HackVROMPTR=CHRptr[0];
MMC5HackCHRMode=0;
MMC5HackSPMode=MMC5HackSPScroll=MMC5HackSPPage=0;
Mapper5_ESI();
FFCEUX_PPURead = mmc5_PPURead;
FFCEUX_PPUWrite = mmc5_PPUWrite;
}
void Mapper5_Init(CartInfo *info)
{
GenMMC5_Init(info, DetectMMC5WRAMSize(info->CRC32), info->battery);
}
// ELROM seems to have 0KB of WRAM
// EKROM seems to have 8KB of WRAM
// ETROM seems to have 16KB of WRAM
// EWROM seems to have 32KB of WRAM
// ETROM and EWROM are battery-backed, EKROM isn't.
void ETROM_Init(CartInfo *info)
{
GenMMC5_Init(info, 16,info->battery);
}
void ELROM_Init(CartInfo *info)
{
GenMMC5_Init(info,0,0);
}
void EWROM_Init(CartInfo *info)
{
GenMMC5_Init(info,32,info->battery);
}
void EKROM_Init(CartInfo *info)
{
GenMMC5_Init(info,8,info->battery);
}
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