X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=boards%2Fmmc5.c;fp=boards%2Fmmc5.c;h=d14ca0ebaaf8161871a7a2ed7d6bcfd440adda7c;hb=d97315ac0bca825d2d50a44453bc5652946e2c67;hp=0000000000000000000000000000000000000000;hpb=890e37ba2b8ea1c7593dc05926d7431e3bd00bfb;p=fceu.git

diff --git a/boards/mmc5.c b/boards/mmc5.c
new file mode 100644
index 0000000..d14ca0e
--- /dev/null
+++ b/boards/mmc5.c
@@ -0,0 +1,839 @@
+/* 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 uint8 CHRBanksA[8], CHRBanksB[4];
+static uint8 WRAMMaskEnable[2];
+static uint8 ABMode;                /* 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;
+
+
+// ETROM seems to have 16KB of WRAM, ELROM seems to have 8KB
+// EWROM seems to have 32KB of WRAM
+
+#define MMC5_NOCARTS 14
+cartdata MMC5CartList[MMC5_NOCARTS]=
+{
+ {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},
+
+ {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 */
+};
+
+
+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);
+  }
+ return(8);
+}
+
+static void BuildWRAMSizeTable(void)
+{
+ int x;
+ for(x=0;x<8;x++)
+ {
+  switch(MMC5WRAMsize)
+  {
+      case 0: MMC5WRAMIndex[x]=255; break;
+      case 1: MMC5WRAMIndex[x]=(x>3)?255:0; break;
+      case 2: MMC5WRAMIndex[x]=(x&4)>>2; break;
+      case 4: MMC5WRAMIndex[x]=(x>3)?255:(x&3); break;
+  }
+ }
+}
+
+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 FASTAPASS(2) 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)
+ {
+  ABMode = 0;
+  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(!ABMode)
+                 { 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: ABMode=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 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(!ABMode)
+ {
+  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;
+}
+
+#if 0
+static void Do5PCMHQ()
+{
+   int32 V;
+   if(!(MMC5Sound.rawcontrol&0x40) && MMC5Sound.raw)
+    for(V=MMC5Sound.BC[2];V<SOUNDTS;V++)
+     WaveHi[V]+=MMC5Sound.raw<<5;
+   MMC5Sound.BC[2]=SOUNDTS;
+}
+#endif
+
+static DECLFW(Mapper5_SW)
+{
+ A&=0x1F;
+
+ GameExpSound.Fill=MMC5RunSound;
+ GameExpSound.HiFill=0;//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;
+ }
+}
+
+#if 0
+static void Do5SQHQ(int P)
+{
+ static int tal[4]={1,2,4,6};
+ int32 V,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;
+}
+#endif
+
+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 0
+  if(FSettings.soundq>=1)
+  {
+   sfun=Do5SQHQ;
+   psfun=Do5PCMHQ;
+  }
+  else
+#endif
+  {
+   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=0;//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, 8, "CHRA"},
+        { CHRBanksB, 4, "CHRB"},
+        { &WRAMPage, 1, "WRMP"},
+        { WRAMMaskEnable, 2, "WRME"},
+        { &ABMode, 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");
+
+ 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();
+}
+
+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);
+}