+++ /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 <stdio.h>
-#include <stdlib.h>
-#include "mapinc.h"
-#include "fmopl.h"
-
-static void VRC7_LoadInstrument(uint8 Chan);
-void vrc7translate(uint8 Reg,uint8 V);
-
-FM_OPL *fmob=0;
-uint8 VRC7Chan[3][6];
-static void InitOPL(void);
-
-void OPL2_setreg(uint8 A, uint8 V)
-{
- if(fmob)
- OPLWrite(fmob,A,V);
-}
-
-
-void LoadOPL(void)
-{
- int x;
- int y;
-
- for(x=y=0;x<0x40;x++)
- y|=MapperExRAM[x];
- if(y)
- {
- InitOPL();
- for(x=0;x<6;x++)
- {
- VRC7_LoadInstrument(x);
- vrc7translate(0x10+x,VRC7Chan[0][x]);
- }
- }
-}
-
-static int dwave=0;
-
-void VRC7Update(void)
-{
- int32 z,a;
-
- z=((SOUNDTS<<16)/soundtsinc)>>4;
- a=z-dwave;
-
- if(a && fmob)
- YM3812UpdateOne(fmob, &Wave[dwave], a);
- dwave+=a;
-}
-
-void UpdateOPL(int Count)
-{
- int32 z,a;
-
- z=((SOUNDTS<<16)/soundtsinc)>>4;
- a=z-dwave;
-
- if(fmob && a)
- YM3812UpdateOne(fmob, &Wave[dwave], a);
-
- dwave=0;
-}
-
-void KillOPL(void)
-{
- if(fmob) OPLDestroy(fmob);
- fmob=0;
-}
-
-static void InitOPL(void)
-{
- int x;
-
- if(!fmob)
- {
- if(!( fmob=OPLCreate(OPL_TYPE_WAVESEL,1789772*2,FSettings.SndRate)))
- return;
- }
- GameExpSound.Kill=KillOPL;
- OPLResetChip(fmob);
-
- for(x=0x1;x<0xF6;x++)
- OPL2_setreg(x,0);
- OPL2_setreg(0xBD,0xC0);
- OPL2_setreg(1,0x20); /* Enable waveform type manipulation */
-}
-
-/* This following code is in the public domain, but the author, Quietust(see */
-/* the "AUTHORS" file, would appreciate credit to go to him if this code */
-/* is used. */
-
-uint8 VRC7Instrument[16][8] = {
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, /* Custom instrument. */
- {0x03,0x01,0x14,0x80,0xC2,0x90,0x43,0x14}, /* Currently working on this one */
- {0x13,0x41,0x10,0x0B,0xFF,0xF2,0x32,0xD6},
- {0x01,0x01,0x10,0x08,0xF0,0xF4,0x00,0x04}, /* 90% perfect */
- {0x21,0x41,0x1B,0x08,0x66,0x80,0x30,0x85},
- {0x22,0x21,0x20,0x03,0x75,0x70,0x24,0x14},
- {0x02,0x01,0x06,0x00,0xF0,0xF2,0x03,0x95}, /* Do not touch! 98% perfect! */
- {0x21,0x41,0x18,0x10,0x93,0xE0,0x21,0x15},
- {0x01,0x22,0x13,0x00,0xF0,0x82,0x00,0x15},
- {0x05,0x01,0x22,0x00,0x60,0xE3,0xA0,0xF5}, /* 90% perfect */
- {0x85,0x01,0x20,0x00,0xD7,0xA2,0x22,0xF5}, /* 90% perfect */
- {0x07,0x81,0x2B,0x05,0xF4,0xF2,0x14,0xF4}, /* 95% perfect */
- {0x21,0x41,0x20,0x18,0xF3,0x80,0x13,0x95},
- {0x01,0x02,0x20,0x00,0xF9,0x92,0x41,0x75}, /* Do not touch! 98% perfect! */
- {0x21,0x62,0x0E,0x00,0x84,0x85,0x45,0x15}, /* 90% perfect */
- {0x21,0x62,0x0E,0x00,0xA1,0xA0,0x34,0x16} /* Do not touch! 98% perfect! */
-};
-
-static uint8 InstTrans[6] = {0x00,0x01,0x02,0x08,0x09,0x0A};
-
-static void VRC7_LoadInstrument(uint8 Chan)
-{
- uint8 *i;
- uint8 x = InstTrans[Chan];
- uint8 y = (VRC7Chan[2][Chan] >> 4) & 0xF;
-
- i=VRC7Instrument[y];
-
- OPL2_setreg((0x20+x),i[0]);
- OPL2_setreg((0x23+x),i[1]);
- OPL2_setreg((0x40+x),i[2]);
- OPL2_setreg((0x43+x),((i[3] & 0xC0)
- | ((VRC7Chan[2][Chan] << 2) & 0x3C))); // quiet
- OPL2_setreg(0xe0+x,(i[3] >> 3) & 0x01);
- OPL2_setreg(0xe3+x,(i[3] >> 4) & 0x01);
- OPL2_setreg(0xC0+Chan,(i[3] << 1) & 0x0E);
- OPL2_setreg(0x60+x,i[4]);
- OPL2_setreg(0x63+x,i[5]);
- OPL2_setreg(0x80+x,i[6]);
- OPL2_setreg(0x83+x,i[7]);
-}
-
-void vrc7translate(uint8 Reg,uint8 V)
-{
- uint8 x = Reg & 0x0F, y;
- if(!fmob) InitOPL();
-
- MapperExRAM[Reg]=V;
-
- VRC7Update();
- switch ((Reg & 0xF0) >> 4)
- {
- case 0:
- if (x & 0x08) break;
- VRC7Instrument[0][x] = V;
- for (y = 0; y < 6; y++)
- if (!(VRC7Chan[2][y]&0xF0))
- VRC7_LoadInstrument(y);
- break;
- case 1:
- if(x>5) break;
- VRC7Chan[0][x] = V;
- OPL2_setreg(0xA0 + x,(VRC7Chan[0][x] << 1) & 0xFE);
- OPL2_setreg(0xB0 + x,((VRC7Chan[0][x] >> 7) & 0x01) | ((VRC7Chan[1][x] << 1) & 0x3E));
- break;
- case 2:
- if(x>5) break;
- VRC7Chan[1][x] = V;
- OPL2_setreg(0xB0 + x,(((VRC7Chan[0][x] >> 7) & 0x01) | ((VRC7Chan[1][x] << 1) & 0x3E)));
- break;
- case 3:
- if(x>5) break;
- VRC7Chan[2][x] = V;
- VRC7_LoadInstrument(x);
- break;
- }
-}
notaz.gp2x.de / fceu.git / blobdiff