diff options
Diffstat (limited to 'source/apu.c')
| -rw-r--r-- | source/apu.c | 1284 |
1 files changed, 640 insertions, 644 deletions
diff --git a/source/apu.c b/source/apu.c index e117bd8..a63b42f 100644 --- a/source/apu.c +++ b/source/apu.c @@ -1,6 +1,6 @@ /******************************************************************************* Snes9x - Portable Super Nintendo Entertainment System (TM) emulator. - + (c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com) and Jerremy Koot (jkoot@snes9x.com) @@ -43,46 +43,46 @@ S-DD1 C emulator code (c) Copyright 2003 Brad Jorsch with research by Andreas Naive and John Weidman - + S-RTC C emulator code (c) Copyright 2001 John Weidman - + ST010 C++ emulator code (c) Copyright 2003 Feather, Kris Bleakley, John Weidman and Matthew Kendora - Super FX x86 assembler emulator code - (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault + Super FX x86 assembler emulator code + (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault - Super FX C emulator code + Super FX C emulator code (c) Copyright 1997 - 1999 Ivar, Gary Henderson and John Weidman SH assembler code partly based on x86 assembler code - (c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se) + (c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se) + - Specific ports contains the works of other authors. See headers in individual files. - + Snes9x homepage: http://www.snes9x.com - + Permission to use, copy, modify and distribute Snes9x in both binary and source form, for non-commercial purposes, is hereby granted without fee, providing that this license information and copyright notice appear with all copies and any derived work. - + This software is provided 'as-is', without any express or implied warranty. In no event shall the authors be held liable for any damages arising from the use of this software. - + Snes9x is freeware for PERSONAL USE only. Commercial users should seek permission of the copyright holders first. Commercial use includes charging money for Snes9x or software derived from Snes9x. - + The copyright holders request that bug fixes and improvements to the code should be forwarded to them so everyone can benefit from the modifications in future versions. - + Super NES and Super Nintendo Entertainment System are trademarks of Nintendo Co., Limited and its subsidiary companies. *******************************************************************************/ @@ -101,675 +101,671 @@ /* For note-triggered SPC dump support */ #include "snapshot.h" -const char *S9xGetFilenameInc (const char *); +const char* S9xGetFilenameInc(const char*); -int spc_is_dumping=0; +int spc_is_dumping = 0; int spc_is_dumping_temp; -uint8 spc_dump_dsp[0x100]; +uint8 spc_dump_dsp[0x100]; extern int NoiseFreq [32]; -bool8 S9xInitAPU () +bool8 S9xInitAPU() { - IAPU.RAM = (uint8 *) malloc (0x10000); - - if (!IAPU.RAM) - { - S9xDeinitAPU (); - return (FALSE); - } - - memset(IAPU.RAM, 0, 0x10000); - - return (TRUE); + IAPU.RAM = (uint8*) malloc(0x10000); + + if (!IAPU.RAM) + { + S9xDeinitAPU(); + return (FALSE); + } + + memset(IAPU.RAM, 0, 0x10000); + + return (TRUE); } -void S9xDeinitAPU () +void S9xDeinitAPU() { - if (IAPU.RAM) - { - free ((char *) IAPU.RAM); - IAPU.RAM = NULL; - } + if (IAPU.RAM) + { + free((char*) IAPU.RAM); + IAPU.RAM = NULL; + } } uint8 APUROM [64]; -void S9xResetAPU () +void S9xResetAPU() { - int i,j; - - Settings.APUEnabled = Settings.NextAPUEnabled; - - ZeroMemory(spc_dump_dsp, 0x100); - ZeroMemory(IAPU.RAM, 0x100); - memset(IAPU.RAM+0x20, 0xFF, 0x20); - memset(IAPU.RAM+0x60, 0xFF, 0x20); - memset(IAPU.RAM+0xA0, 0xFF, 0x20); - memset(IAPU.RAM+0xE0, 0xFF, 0x20); - - for(i=1;i<256;i++) - { - memcpy(IAPU.RAM+(i<<8), IAPU.RAM, 0x100); - } - - ZeroMemory (APU.OutPorts, 4); - IAPU.DirectPage = IAPU.RAM; - // memmove converted: Different mallocs [Neb] - // DS2 DMA notes: The APU ROM is not 32-byte aligned [Neb] - memcpy (&IAPU.RAM [0xffc0], APUROM, sizeof (APUROM)); - // memmove converted: Different mallocs [Neb] - // DS2 DMA notes: The APU ROM is not 32-byte aligned [Neb] - memcpy (APU.ExtraRAM, APUROM, sizeof (APUROM)); - IAPU.PC = IAPU.RAM + IAPU.RAM [0xfffe] + (IAPU.RAM [0xffff] << 8); - APU.Cycles = 0; - IAPU.Registers.YA.W = 0; - IAPU.Registers.X = 0; - IAPU.Registers.S = 0xff; - IAPU.Registers.P = 0; - S9xAPUUnpackStatus (); - IAPU.Registers.PC = 0; - IAPU.APUExecuting = Settings.APUEnabled; + int i, j; + + Settings.APUEnabled = Settings.NextAPUEnabled; + + ZeroMemory(spc_dump_dsp, 0x100); + ZeroMemory(IAPU.RAM, 0x100); + memset(IAPU.RAM + 0x20, 0xFF, 0x20); + memset(IAPU.RAM + 0x60, 0xFF, 0x20); + memset(IAPU.RAM + 0xA0, 0xFF, 0x20); + memset(IAPU.RAM + 0xE0, 0xFF, 0x20); + + for (i = 1; i < 256; i++) + memcpy(IAPU.RAM + (i << 8), IAPU.RAM, 0x100); + + ZeroMemory(APU.OutPorts, 4); + IAPU.DirectPage = IAPU.RAM; + // memmove converted: Different mallocs [Neb] + // DS2 DMA notes: The APU ROM is not 32-byte aligned [Neb] + memcpy(&IAPU.RAM [0xffc0], APUROM, sizeof(APUROM)); + // memmove converted: Different mallocs [Neb] + // DS2 DMA notes: The APU ROM is not 32-byte aligned [Neb] + memcpy(APU.ExtraRAM, APUROM, sizeof(APUROM)); + IAPU.PC = IAPU.RAM + IAPU.RAM [0xfffe] + (IAPU.RAM [0xffff] << 8); + APU.Cycles = 0; + IAPU.Registers.YA.W = 0; + IAPU.Registers.X = 0; + IAPU.Registers.S = 0xff; + IAPU.Registers.P = 0; + S9xAPUUnpackStatus(); + IAPU.Registers.PC = 0; + IAPU.APUExecuting = Settings.APUEnabled; #ifdef SPC700_SHUTDOWN - IAPU.WaitAddress1 = NULL; - IAPU.WaitAddress2 = NULL; - IAPU.WaitCounter = 0; + IAPU.WaitAddress1 = NULL; + IAPU.WaitAddress2 = NULL; + IAPU.WaitCounter = 0; #endif - APU.ShowROM = TRUE; - IAPU.RAM [0xf1] = 0x80; - - for (i = 0; i < 3; i++) - { - APU.TimerEnabled [i] = FALSE; - APU.TimerValueWritten [i] = 0; - APU.TimerTarget [i] = 0; - APU.Timer [i] = 0; - } - for (j = 0; j < 0x80; j++) - APU.DSP [j] = 0; - - IAPU.TwoCycles = IAPU.OneCycle * 2; - - for (i = 0; i < 256; i++) - S9xAPUCycles [i] = S9xAPUCycleLengths [i] * IAPU.OneCycle; - - APU.DSP [APU_ENDX] = 0; - APU.DSP [APU_KOFF] = 0; - APU.DSP [APU_KON] = 0; - APU.DSP [APU_FLG] = APU_MUTE | APU_ECHO_DISABLED; - APU.KeyedChannels = 0; - - S9xResetSound (TRUE); - S9xSetEchoEnable (0); + APU.ShowROM = TRUE; + IAPU.RAM [0xf1] = 0x80; + + for (i = 0; i < 3; i++) + { + APU.TimerEnabled [i] = FALSE; + APU.TimerValueWritten [i] = 0; + APU.TimerTarget [i] = 0; + APU.Timer [i] = 0; + } + for (j = 0; j < 0x80; j++) + APU.DSP [j] = 0; + + IAPU.TwoCycles = IAPU.OneCycle * 2; + + for (i = 0; i < 256; i++) + S9xAPUCycles [i] = S9xAPUCycleLengths [i] * IAPU.OneCycle; + + APU.DSP [APU_ENDX] = 0; + APU.DSP [APU_KOFF] = 0; + APU.DSP [APU_KON] = 0; + APU.DSP [APU_FLG] = APU_MUTE | APU_ECHO_DISABLED; + APU.KeyedChannels = 0; + + S9xResetSound(TRUE); + S9xSetEchoEnable(0); } -void S9xSetAPUDSP (uint8 byte) +void S9xSetAPUDSP(uint8 byte) { - uint8 reg = IAPU.RAM [0xf2]; - static uint8 KeyOn; - static uint8 KeyOnPrev; - int i; - - spc_dump_dsp[reg] = byte; - - switch (reg) - { - case APU_FLG: - if (byte & APU_SOFT_RESET) - { - APU.DSP [reg] = APU_MUTE | APU_ECHO_DISABLED | (byte & 0x1f); - APU.DSP [APU_ENDX] = 0; - APU.DSP [APU_KOFF] = 0; - APU.DSP [APU_KON] = 0; - S9xSetEchoWriteEnable (FALSE); + uint8 reg = IAPU.RAM [0xf2]; + static uint8 KeyOn; + static uint8 KeyOnPrev; + int i; + + spc_dump_dsp[reg] = byte; + + switch (reg) + { + case APU_FLG: + if (byte & APU_SOFT_RESET) + { + APU.DSP [reg] = APU_MUTE | APU_ECHO_DISABLED | (byte & 0x1f); + APU.DSP [APU_ENDX] = 0; + APU.DSP [APU_KOFF] = 0; + APU.DSP [APU_KON] = 0; + S9xSetEchoWriteEnable(FALSE); // Kill sound - S9xResetSound (FALSE); - } - else - { - S9xSetEchoWriteEnable (!(byte & APU_ECHO_DISABLED)); - if (byte & APU_MUTE) - { - S9xSetSoundMute (TRUE); - } - else - S9xSetSoundMute (FALSE); - - SoundData.noise_hertz = NoiseFreq [byte & 0x1f]; - for (i = 0; i < 8; i++) - { - if (SoundData.channels [i].type == SOUND_NOISE) - S9xSetSoundFrequency (i, SoundData.noise_hertz); - } - } - break; - case APU_NON: - if (byte != APU.DSP [APU_NON]) - { - int c; - uint8 mask = 1; - for (c = 0; c < 8; c++, mask <<= 1) - { - int type; - - if (byte & mask) - type = SOUND_NOISE; - else - type = SOUND_SAMPLE; - - S9xSetSoundType (c, type); - } - } - break; - case APU_MVOL_LEFT: - if (byte != APU.DSP [APU_MVOL_LEFT]) - { - S9xSetMasterVolume ((signed char) byte, - (signed char) APU.DSP [APU_MVOL_RIGHT]); - } - break; - case APU_MVOL_RIGHT: - if (byte != APU.DSP [APU_MVOL_RIGHT]) - { - S9xSetMasterVolume ((signed char) APU.DSP [APU_MVOL_LEFT], - (signed char) byte); - } - break; - case APU_EVOL_LEFT: - if (byte != APU.DSP [APU_EVOL_LEFT]) - { - S9xSetEchoVolume ((signed char) byte, - (signed char) APU.DSP [APU_EVOL_RIGHT]); - } - break; - case APU_EVOL_RIGHT: - if (byte != APU.DSP [APU_EVOL_RIGHT]) - { - S9xSetEchoVolume ((signed char) APU.DSP [APU_EVOL_LEFT], - (signed char) byte); - } - break; - case APU_ENDX: - byte = 0; - break; - - case APU_KOFF: - // if (byte) - { + S9xResetSound(FALSE); + } + else + { + S9xSetEchoWriteEnable(!(byte & APU_ECHO_DISABLED)); + if (byte & APU_MUTE) + S9xSetSoundMute(TRUE); + else + S9xSetSoundMute(FALSE); + + SoundData.noise_hertz = NoiseFreq [byte & 0x1f]; + for (i = 0; i < 8; i++) + { + if (SoundData.channels [i].type == SOUND_NOISE) + S9xSetSoundFrequency(i, SoundData.noise_hertz); + } + } + break; + case APU_NON: + if (byte != APU.DSP [APU_NON]) + { int c; - uint8 mask = 1; + uint8 mask = 1; for (c = 0; c < 8; c++, mask <<= 1) - { - if ((byte & mask) != 0) - { - if (APU.KeyedChannels & mask) - { - { - KeyOnPrev&=~mask; - APU.KeyedChannels &= ~mask; - APU.DSP [APU_KON] &= ~mask; - //APU.DSP [APU_KOFF] |= mask; - S9xSetSoundKeyOff (c); - } - } - } - else if((KeyOnPrev&mask)!=0) - { - KeyOnPrev&=~mask; - APU.KeyedChannels |= mask; - //APU.DSP [APU_KON] |= mask; - APU.DSP [APU_KOFF] &= ~mask; - APU.DSP [APU_ENDX] &= ~mask; - S9xPlaySample (c); - } - } - } - //KeyOnPrev=0; - APU.DSP [APU_KOFF] = byte; - return; - case APU_KON: - if (spc_is_dumping) - { - if (byte & ~spc_is_dumping_temp) - { - IAPU.Registers.PC = IAPU.PC - IAPU.RAM; - S9xAPUPackStatus(); - S9xSPCDump (".spc"); - spc_is_dumping = 0; - } - } - if (byte) - { + { + int type; + + if (byte & mask) + type = SOUND_NOISE; + else + type = SOUND_SAMPLE; + + S9xSetSoundType(c, type); + } + } + break; + case APU_MVOL_LEFT: + if (byte != APU.DSP [APU_MVOL_LEFT]) + { + S9xSetMasterVolume((signed char) byte, + (signed char) APU.DSP [APU_MVOL_RIGHT]); + } + break; + case APU_MVOL_RIGHT: + if (byte != APU.DSP [APU_MVOL_RIGHT]) + { + S9xSetMasterVolume((signed char) APU.DSP [APU_MVOL_LEFT], + (signed char) byte); + } + break; + case APU_EVOL_LEFT: + if (byte != APU.DSP [APU_EVOL_LEFT]) + { + S9xSetEchoVolume((signed char) byte, + (signed char) APU.DSP [APU_EVOL_RIGHT]); + } + break; + case APU_EVOL_RIGHT: + if (byte != APU.DSP [APU_EVOL_RIGHT]) + { + S9xSetEchoVolume((signed char) APU.DSP [APU_EVOL_LEFT], + (signed char) byte); + } + break; + case APU_ENDX: + byte = 0; + break; + + case APU_KOFF: + // if (byte) + { + int c; + uint8 mask = 1; + for (c = 0; c < 8; c++, mask <<= 1) + { + if ((byte & mask) != 0) + { + if (APU.KeyedChannels & mask) + { + { + KeyOnPrev &= ~mask; + APU.KeyedChannels &= ~mask; + APU.DSP [APU_KON] &= ~mask; + //APU.DSP [APU_KOFF] |= mask; + S9xSetSoundKeyOff(c); + } + } + } + else if ((KeyOnPrev & mask) != 0) + { + KeyOnPrev &= ~mask; + APU.KeyedChannels |= mask; + //APU.DSP [APU_KON] |= mask; + APU.DSP [APU_KOFF] &= ~mask; + APU.DSP [APU_ENDX] &= ~mask; + S9xPlaySample(c); + } + } + } + //KeyOnPrev=0; + APU.DSP [APU_KOFF] = byte; + return; + case APU_KON: + if (spc_is_dumping) + { + if (byte & ~spc_is_dumping_temp) + { + IAPU.Registers.PC = IAPU.PC - IAPU.RAM; + S9xAPUPackStatus(); + S9xSPCDump(".spc"); + spc_is_dumping = 0; + } + } + if (byte) + { int c; - uint8 mask = 1; + uint8 mask = 1; for (c = 0; c < 8; c++, mask <<= 1) - { - if ((byte & mask) != 0) - { - // Pac-In-Time requires that channels can be key-on - // regardeless of their current state. - if((APU.DSP [APU_KOFF] & mask) ==0) - { - KeyOnPrev&=~mask; - APU.KeyedChannels |= mask; - //APU.DSP [APU_KON] |= mask; - //APU.DSP [APU_KOFF] &= ~mask; - APU.DSP [APU_ENDX] &= ~mask; - S9xPlaySample (c); - } - else KeyOn|=mask; - } - } - } - spc_is_dumping_temp = byte; - return; - - case APU_VOL_LEFT + 0x00: - case APU_VOL_LEFT + 0x10: - case APU_VOL_LEFT + 0x20: - case APU_VOL_LEFT + 0x30: - case APU_VOL_LEFT + 0x40: - case APU_VOL_LEFT + 0x50: - case APU_VOL_LEFT + 0x60: - case APU_VOL_LEFT + 0x70: - // At Shin Megami Tensei suggestion 6/11/00 - // if (byte != APU.DSP [reg]) - { - S9xSetSoundVolume (reg >> 4, (signed char) byte, - (signed char) APU.DSP [reg + 1]); - } - break; - case APU_VOL_RIGHT + 0x00: - case APU_VOL_RIGHT + 0x10: - case APU_VOL_RIGHT + 0x20: - case APU_VOL_RIGHT + 0x30: - case APU_VOL_RIGHT + 0x40: - case APU_VOL_RIGHT + 0x50: - case APU_VOL_RIGHT + 0x60: - case APU_VOL_RIGHT + 0x70: - // At Shin Megami Tensei suggestion 6/11/00 - // if (byte != APU.DSP [reg]) - { - S9xSetSoundVolume (reg >> 4, (signed char) APU.DSP [reg - 1], - (signed char) byte); - } - break; - - case APU_P_LOW + 0x00: - case APU_P_LOW + 0x10: - case APU_P_LOW + 0x20: - case APU_P_LOW + 0x30: - case APU_P_LOW + 0x40: - case APU_P_LOW + 0x50: - case APU_P_LOW + 0x60: - case APU_P_LOW + 0x70: - S9xSetSoundHertz (reg >> 4, ((byte + (APU.DSP [reg + 1] << 8)) & FREQUENCY_MASK) * 8); - break; - - case APU_P_HIGH + 0x00: - case APU_P_HIGH + 0x10: - case APU_P_HIGH + 0x20: - case APU_P_HIGH + 0x30: - case APU_P_HIGH + 0x40: - case APU_P_HIGH + 0x50: - case APU_P_HIGH + 0x60: - case APU_P_HIGH + 0x70: - S9xSetSoundHertz (reg >> 4, - (((byte << 8) + APU.DSP [reg - 1]) & FREQUENCY_MASK) * 8); - break; - - case APU_SRCN + 0x00: - case APU_SRCN + 0x10: - case APU_SRCN + 0x20: - case APU_SRCN + 0x30: - case APU_SRCN + 0x40: - case APU_SRCN + 0x50: - case APU_SRCN + 0x60: - case APU_SRCN + 0x70: - if (byte != APU.DSP [reg]) - { - S9xSetSoundSample (reg >> 4, byte); - } - break; - - case APU_ADSR1 + 0x00: - case APU_ADSR1 + 0x10: - case APU_ADSR1 + 0x20: - case APU_ADSR1 + 0x30: - case APU_ADSR1 + 0x40: - case APU_ADSR1 + 0x50: - case APU_ADSR1 + 0x60: - case APU_ADSR1 + 0x70: - if (byte != APU.DSP [reg]) - { - { - S9xFixEnvelope (reg >> 4, APU.DSP [reg + 2], byte, - APU.DSP [reg + 1]); - } - } - break; - - case APU_ADSR2 + 0x00: - case APU_ADSR2 + 0x10: - case APU_ADSR2 + 0x20: - case APU_ADSR2 + 0x30: - case APU_ADSR2 + 0x40: - case APU_ADSR2 + 0x50: - case APU_ADSR2 + 0x60: - case APU_ADSR2 + 0x70: - if (byte != APU.DSP [reg]) - { - { - S9xFixEnvelope (reg >> 4, APU.DSP [reg + 1], APU.DSP [reg - 1], - byte); - } - } - break; - - case APU_GAIN + 0x00: - case APU_GAIN + 0x10: - case APU_GAIN + 0x20: - case APU_GAIN + 0x30: - case APU_GAIN + 0x40: - case APU_GAIN + 0x50: - case APU_GAIN + 0x60: - case APU_GAIN + 0x70: - if (byte != APU.DSP [reg]) - { - { - S9xFixEnvelope (reg >> 4, byte, APU.DSP [reg - 2], - APU.DSP [reg - 1]); - } - } - break; - - case APU_ENVX + 0x00: - case APU_ENVX + 0x10: - case APU_ENVX + 0x20: - case APU_ENVX + 0x30: - case APU_ENVX + 0x40: - case APU_ENVX + 0x50: - case APU_ENVX + 0x60: - case APU_ENVX + 0x70: - break; - - case APU_OUTX + 0x00: - case APU_OUTX + 0x10: - case APU_OUTX + 0x20: - case APU_OUTX + 0x30: - case APU_OUTX + 0x40: - case APU_OUTX + 0x50: - case APU_OUTX + 0x60: - case APU_OUTX + 0x70: - break; - - case APU_DIR: - break; - - case APU_PMON: - if (byte != APU.DSP [APU_PMON]) - { - S9xSetFrequencyModulationEnable (byte); - } - break; - - case APU_EON: - if (byte != APU.DSP [APU_EON]) - { - S9xSetEchoEnable (byte); - } - break; - - case APU_EFB: - S9xSetEchoFeedback ((signed char) byte); - break; - - case APU_ESA: - break; - - case APU_EDL: - S9xSetEchoDelay (byte & 0xf); - break; - - case APU_C0: - case APU_C1: - case APU_C2: - case APU_C3: - case APU_C4: - case APU_C5: - case APU_C6: - case APU_C7: - S9xSetFilterCoefficient (reg >> 4, (signed char) byte); - break; - default: - // XXX - //printf ("Write %02x to unknown APU register %02x\n", byte, reg); - break; - } - - KeyOnPrev|=KeyOn; - KeyOn=0; - - if (reg < 0x80) - APU.DSP [reg] = byte; + { + if ((byte & mask) != 0) + { + // Pac-In-Time requires that channels can be key-on + // regardeless of their current state. + if ((APU.DSP [APU_KOFF] & mask) == 0) + { + KeyOnPrev &= ~mask; + APU.KeyedChannels |= mask; + //APU.DSP [APU_KON] |= mask; + //APU.DSP [APU_KOFF] &= ~mask; + APU.DSP [APU_ENDX] &= ~mask; + S9xPlaySample(c); + } + else KeyOn |= mask; + } + } + } + spc_is_dumping_temp = byte; + return; + + case APU_VOL_LEFT + 0x00: + case APU_VOL_LEFT + 0x10: + case APU_VOL_LEFT + 0x20: + case APU_VOL_LEFT + 0x30: + case APU_VOL_LEFT + 0x40: + case APU_VOL_LEFT + 0x50: + case APU_VOL_LEFT + 0x60: + case APU_VOL_LEFT + 0x70: + // At Shin Megami Tensei suggestion 6/11/00 + // if (byte != APU.DSP [reg]) + { + S9xSetSoundVolume(reg >> 4, (signed char) byte, + (signed char) APU.DSP [reg + 1]); + } + break; + case APU_VOL_RIGHT + 0x00: + case APU_VOL_RIGHT + 0x10: + case APU_VOL_RIGHT + 0x20: + case APU_VOL_RIGHT + 0x30: + case APU_VOL_RIGHT + 0x40: + case APU_VOL_RIGHT + 0x50: + case APU_VOL_RIGHT + 0x60: + case APU_VOL_RIGHT + 0x70: + // At Shin Megami Tensei suggestion 6/11/00 + // if (byte != APU.DSP [reg]) + { + S9xSetSoundVolume(reg >> 4, (signed char) APU.DSP [reg - 1], + (signed char) byte); + } + break; + + case APU_P_LOW + 0x00: + case APU_P_LOW + 0x10: + case APU_P_LOW + 0x20: + case APU_P_LOW + 0x30: + case APU_P_LOW + 0x40: + case APU_P_LOW + 0x50: + case APU_P_LOW + 0x60: + case APU_P_LOW + 0x70: + S9xSetSoundHertz(reg >> 4, + ((byte + (APU.DSP [reg + 1] << 8)) & FREQUENCY_MASK) * 8); + break; + + case APU_P_HIGH + 0x00: + case APU_P_HIGH + 0x10: + case APU_P_HIGH + 0x20: + case APU_P_HIGH + 0x30: + case APU_P_HIGH + 0x40: + case APU_P_HIGH + 0x50: + case APU_P_HIGH + 0x60: + case APU_P_HIGH + 0x70: + S9xSetSoundHertz(reg >> 4, + (((byte << 8) + APU.DSP [reg - 1]) & FREQUENCY_MASK) * 8); + break; + + case APU_SRCN + 0x00: + case APU_SRCN + 0x10: + case APU_SRCN + 0x20: + case APU_SRCN + 0x30: + case APU_SRCN + 0x40: + case APU_SRCN + 0x50: + case APU_SRCN + 0x60: + case APU_SRCN + 0x70: + if (byte != APU.DSP [reg]) + S9xSetSoundSample(reg >> 4, byte); + break; + + case APU_ADSR1 + 0x00: + case APU_ADSR1 + 0x10: + case APU_ADSR1 + 0x20: + case APU_ADSR1 + 0x30: + case APU_ADSR1 + 0x40: + case APU_ADSR1 + 0x50: + case APU_ADSR1 + 0x60: + case APU_ADSR1 + 0x70: + if (byte != APU.DSP [reg]) + { + { + S9xFixEnvelope(reg >> 4, APU.DSP [reg + 2], byte, + APU.DSP [reg + 1]); + } + } + break; + + case APU_ADSR2 + 0x00: + case APU_ADSR2 + 0x10: + case APU_ADSR2 + 0x20: + case APU_ADSR2 + 0x30: + case APU_ADSR2 + 0x40: + case APU_ADSR2 + 0x50: + case APU_ADSR2 + 0x60: + case APU_ADSR2 + 0x70: + if (byte != APU.DSP [reg]) + { + { + S9xFixEnvelope(reg >> 4, APU.DSP [reg + 1], APU.DSP [reg - 1], + byte); + } + } + break; + + case APU_GAIN + 0x00: + case APU_GAIN + 0x10: + case APU_GAIN + 0x20: + case APU_GAIN + 0x30: + case APU_GAIN + 0x40: + case APU_GAIN + 0x50: + case APU_GAIN + 0x60: + case APU_GAIN + 0x70: + if (byte != APU.DSP [reg]) + { + { + S9xFixEnvelope(reg >> 4, byte, APU.DSP [reg - 2], + APU.DSP [reg - 1]); + } + } + break; + + case APU_ENVX + 0x00: + case APU_ENVX + 0x10: + case APU_ENVX + 0x20: + case APU_ENVX + 0x30: + case APU_ENVX + 0x40: + case APU_ENVX + 0x50: + case APU_ENVX + 0x60: + case APU_ENVX + 0x70: + break; + + case APU_OUTX + 0x00: + case APU_OUTX + 0x10: + case APU_OUTX + 0x20: + case APU_OUTX + 0x30: + case APU_OUTX + 0x40: + case APU_OUTX + 0x50: + case APU_OUTX + 0x60: + case APU_OUTX + 0x70: + break; + + case APU_DIR: + break; + + case APU_PMON: + if (byte != APU.DSP [APU_PMON]) + S9xSetFrequencyModulationEnable(byte); + break; + + case APU_EON: + if (byte != APU.DSP [APU_EON]) + S9xSetEchoEnable(byte); + break; + + case APU_EFB: + S9xSetEchoFeedback((signed char) byte); + break; + + case APU_ESA: + break; + + case APU_EDL: + S9xSetEchoDelay(byte & 0xf); + break; + + case APU_C0: + case APU_C1: + case APU_C2: + case APU_C3: + case APU_C4: + case APU_C5: + case APU_C6: + case APU_C7: + S9xSetFilterCoefficient(reg >> 4, (signed char) byte); + break; + default: + // XXX + //printf ("Write %02x to unknown APU register %02x\n", byte, reg); + break; + } + + KeyOnPrev |= KeyOn; + KeyOn = 0; + + if (reg < 0x80) + APU.DSP [reg] = byte; } -void S9xFixEnvelope (int channel, uint8 gain, uint8 adsr1, uint8 adsr2) +void S9xFixEnvelope(int channel, uint8 gain, uint8 adsr1, uint8 adsr2) { - if (adsr1 & 0x80) - { - // ADSR mode - static unsigned long AttackRate [16] = { - 4100, 2600, 1500, 1000, 640, 380, 260, 160, - 96, 64, 40, 24, 16, 10, 6, 1 - }; - static unsigned long DecayRate [8] = { - 1200, 740, 440, 290, 180, 110, 74, 37 - }; - static unsigned long SustainRate [32] = { - ~0, 38000, 28000, 24000, 19000, 14000, 12000, 9400, - 7100, 5900, 4700, 3500, 2900, 2400, 1800, 1500, - 1200, 880, 740, 590, 440, 370, 290, 220, - 180, 150, 110, 92, 74, 55, 37, 18 - }; - // XXX: can DSP be switched to ADSR mode directly from GAIN/INCREASE/ - // DECREASE mode? And if so, what stage of the sequence does it start - // at? - if (S9xSetSoundMode (channel, MODE_ADSR)) - { - // Hack for ROMs that use a very short attack rate, key on a - // channel, then switch to decay mode. e.g. Final Fantasy II. - - int attack = AttackRate [adsr1 & 0xf]; - - if (attack == 1 && (!Settings.SoundSync + if (adsr1 & 0x80) + { + // ADSR mode + static unsigned long AttackRate [16] = + { + 4100, 2600, 1500, 1000, 640, 380, 260, 160, + 96, 64, 40, 24, 16, 10, 6, 1 + }; + static unsigned long DecayRate [8] = + { + 1200, 740, 440, 290, 180, 110, 74, 37 + }; + static unsigned long SustainRate [32] = + { + ~0, 38000, 28000, 24000, 19000, 14000, 12000, 9400, + 7100, 5900, 4700, 3500, 2900, 2400, 1800, 1500, + 1200, 880, 740, 590, 440, 370, 290, 220, + 180, 150, 110, 92, 74, 55, 37, 18 + }; + // XXX: can DSP be switched to ADSR mode directly from GAIN/INCREASE/ + // DECREASE mode? And if so, what stage of the sequence does it start + // at? + if (S9xSetSoundMode(channel, MODE_ADSR)) + { + // Hack for ROMs that use a very short attack rate, key on a + // channel, then switch to decay mode. e.g. Final Fantasy II. + + int attack = AttackRate [adsr1 & 0xf]; + + if (attack == 1 && (!Settings.SoundSync #ifdef __WIN32__ - || Settings.SoundDriver != WIN_SNES9X_DIRECT_SOUND_DRIVER + || Settings.SoundDriver != WIN_SNES9X_DIRECT_SOUND_DRIVER #endif - )) - attack = 0; - - S9xSetSoundADSR (channel, attack, - DecayRate [(adsr1 >> 4) & 7], - SustainRate [adsr2 & 0x1f], - (adsr2 >> 5) & 7, 8); - } - } - else - { - // Gain mode - if ((gain & 0x80) == 0) - { - if (S9xSetSoundMode (channel, MODE_GAIN)) - { - S9xSetEnvelopeRate (channel, 0, 0, gain & 0x7f); - S9xSetEnvelopeHeight (channel, gain & 0x7f); - } - } - else - { - static unsigned long IncreaseRate [32] = { - ~0, 4100, 3100, 2600, 2000, 1500, 1300, 1000, - 770, 640, 510, 380, 320, 260, 190, 160, - 130, 96, 80, 64, 48, 40, 32, 24, - 20, 16, 12, 10, 8, 6, 4, 2 - }; - static unsigned long DecreaseRateExp [32] = { - ~0, 38000, 28000, 24000, 19000, 14000, 12000, 9400, - 7100, 5900, 4700, 3500, 2900, 2400, 1800, 1500, - 1200, 880, 740, 590, 440, 370, 290, 220, - 180, 150, 110, 92, 74, 55, 37, 18 - }; - if (gain & 0x40) - { - // Increase mode - if (S9xSetSoundMode (channel, (gain & 0x20) ? -MODE_INCREASE_BENT_LINE : - MODE_INCREASE_LINEAR)) - { - S9xSetEnvelopeRate (channel, IncreaseRate [gain & 0x1f], - 1, 127); - } - } - else - { - uint32 rate = (gain & 0x20) ? DecreaseRateExp [gain & 0x1f] / 2 : - IncreaseRate [gain & 0x1f]; - int mode = (gain & 0x20) ? MODE_DECREASE_EXPONENTIAL - : MODE_DECREASE_LINEAR; - - if (S9xSetSoundMode (channel, mode)) - S9xSetEnvelopeRate (channel, rate, -1, 0); - } - } - } + )) + attack = 0; + + S9xSetSoundADSR(channel, attack, + DecayRate [(adsr1 >> 4) & 7], + SustainRate [adsr2 & 0x1f], + (adsr2 >> 5) & 7, 8); + } + } + else + { + // Gain mode + if ((gain & 0x80) == 0) + { + if (S9xSetSoundMode(channel, MODE_GAIN)) + { + S9xSetEnvelopeRate(channel, 0, 0, gain & 0x7f); + S9xSetEnvelopeHeight(channel, gain & 0x7f); + } + } + else + { + static unsigned long IncreaseRate [32] = + { + ~0, 4100, 3100, 2600, 2000, 1500, 1300, 1000, + 770, 640, 510, 380, 320, 260, 190, 160, + 130, 96, 80, 64, 48, 40, 32, 24, + 20, 16, 12, 10, 8, 6, 4, 2 + }; + static unsigned long DecreaseRateExp [32] = + { + ~0, 38000, 28000, 24000, 19000, 14000, 12000, 9400, + 7100, 5900, 4700, 3500, 2900, 2400, 1800, 1500, + 1200, 880, 740, 590, 440, 370, 290, 220, + 180, 150, 110, 92, 74, 55, 37, 18 + }; + if (gain & 0x40) + { + // Increase mode + if (S9xSetSoundMode(channel, (gain & 0x20) ? + MODE_INCREASE_BENT_LINE : + MODE_INCREASE_LINEAR)) + { + S9xSetEnvelopeRate(channel, IncreaseRate [gain & 0x1f], + 1, 127); + } + } + else + { + uint32 rate = (gain & 0x20) ? DecreaseRateExp [gain & 0x1f] / 2 : + IncreaseRate [gain & 0x1f]; + int mode = (gain & 0x20) ? MODE_DECREASE_EXPONENTIAL + : MODE_DECREASE_LINEAR; + + if (S9xSetSoundMode(channel, mode)) + S9xSetEnvelopeRate(channel, rate, -1, 0); + } + } + } } -void S9xSetAPUControl (uint8 byte) +void S9xSetAPUControl(uint8 byte) { - //if (byte & 0x40) - //printf ("*** Special SPC700 timing enabled\n"); - if ((byte & 1) != 0 && !APU.TimerEnabled [0]) - { - APU.Timer [0] = 0; - IAPU.RAM [0xfd] = 0; - if ((APU.TimerTarget [0] = IAPU.RAM [0xfa]) == 0) - APU.TimerTarget [0] = 0x100; - } - if ((byte & 2) != 0 && !APU.TimerEnabled [1]) - { - APU.Timer [1] = 0; - IAPU.RAM [0xfe] = 0; - if ((APU.TimerTarget [1] = IAPU.RAM [0xfb]) == 0) - APU.TimerTarget [1] = 0x100; - } - if ((byte & 4) != 0 && !APU.TimerEnabled [2]) - { - APU.Timer [2] = 0; - IAPU.RAM [0xff] = 0; - if ((APU.TimerTarget [2] = IAPU.RAM [0xfc]) == 0) - APU.TimerTarget [2] = 0x100; - } - APU.TimerEnabled [0] = byte & 1; - APU.TimerEnabled [1] = (byte & 2) >> 1; - APU.TimerEnabled [2] = (byte & 4) >> 2; - - if (byte & 0x10) - IAPU.RAM [0xF4] = IAPU.RAM [0xF5] = 0; - - if (byte & 0x20) - IAPU.RAM [0xF6] = IAPU.RAM [0xF7] = 0; - - if (byte & 0x80) - { - if (!APU.ShowROM) - { - // memmove converted: Different mallocs [Neb] - // DS2 DMA notes: The APU ROM is not 32-byte aligned [Neb] - memcpy (&IAPU.RAM [0xffc0], APUROM, sizeof (APUROM)); - APU.ShowROM = TRUE; - } - } - else - { - if (APU.ShowROM) - { - APU.ShowROM = FALSE; - // memmove converted: Different mallocs [Neb] - // DS2 DMA notes: The APU ROM is not 32-byte aligned [Neb] - memcpy (&IAPU.RAM [0xffc0], APU.ExtraRAM, sizeof (APUROM)); - } - } - IAPU.RAM [0xf1] = byte; + //if (byte & 0x40) + //printf ("*** Special SPC700 timing enabled\n"); + if ((byte & 1) != 0 && !APU.TimerEnabled [0]) + { + APU.Timer [0] = 0; + IAPU.RAM [0xfd] = 0; + if ((APU.TimerTarget [0] = IAPU.RAM [0xfa]) == 0) + APU.TimerTarget [0] = 0x100; + } + if ((byte & 2) != 0 && !APU.TimerEnabled [1]) + { + APU.Timer [1] = 0; + IAPU.RAM [0xfe] = 0; + if ((APU.TimerTarget [1] = IAPU.RAM [0xfb]) == 0) + APU.TimerTarget [1] = 0x100; + } + if ((byte & 4) != 0 && !APU.TimerEnabled [2]) + { + APU.Timer [2] = 0; + IAPU.RAM [0xff] = 0; + if ((APU.TimerTarget [2] = IAPU.RAM [0xfc]) == 0) + APU.TimerTarget [2] = 0x100; + } + APU.TimerEnabled [0] = byte & 1; + APU.TimerEnabled [1] = (byte & 2) >> 1; + APU.TimerEnabled [2] = (byte & 4) >> 2; + + if (byte & 0x10) + IAPU.RAM [0xF4] = IAPU.RAM [0xF5] = 0; + + if (byte & 0x20) + IAPU.RAM [0xF6] = IAPU.RAM [0xF7] = 0; + + if (byte & 0x80) + { + if (!APU.ShowROM) + { + // memmove converted: Different mallocs [Neb] + // DS2 DMA notes: The APU ROM is not 32-byte aligned [Neb] + memcpy(&IAPU.RAM [0xffc0], APUROM, sizeof(APUROM)); + APU.ShowROM = TRUE; + } + } + else + { + if (APU.ShowROM) + { + APU.ShowROM = FALSE; + // memmove converted: Different mallocs [Neb] + // DS2 DMA notes: The APU ROM is not 32-byte aligned [Neb] + memcpy(&IAPU.RAM [0xffc0], APU.ExtraRAM, sizeof(APUROM)); + } + } + IAPU.RAM [0xf1] = byte; } -void S9xSetAPUTimer (uint16 Address, uint8 byte) +void S9xSetAPUTimer(uint16 Address, uint8 byte) { - IAPU.RAM [Address] = byte; - - switch (Address) - { - case 0xfa: - if ((APU.TimerTarget [0] = IAPU.RAM [0xfa]) == 0) - APU.TimerTarget [0] = 0x100; - APU.TimerValueWritten [0] = TRUE; - break; - case 0xfb: - if ((APU.TimerTarget [1] = IAPU.RAM [0xfb]) == 0) - APU.TimerTarget [1] = 0x100; - APU.TimerValueWritten [1] = TRUE; - break; - case 0xfc: - if ((APU.TimerTarget [2] = IAPU.RAM [0xfc]) == 0) - APU.TimerTarget [2] = 0x100; - APU.TimerValueWritten [2] = TRUE; - break; - } + IAPU.RAM [Address] = byte; + + switch (Address) + { + case 0xfa: + if ((APU.TimerTarget [0] = IAPU.RAM [0xfa]) == 0) + APU.TimerTarget [0] = 0x100; + APU.TimerValueWritten [0] = TRUE; + break; + case 0xfb: + if ((APU.TimerTarget [1] = IAPU.RAM [0xfb]) == 0) + APU.TimerTarget [1] = 0x100; + APU.TimerValueWritten [1] = TRUE; + break; + case 0xfc: + if ((APU.TimerTarget [2] = IAPU.RAM [0xfc]) == 0) + APU.TimerTarget [2] = 0x100; + APU.TimerValueWritten [2] = TRUE; + break; + } } -uint8 S9xGetAPUDSP () +uint8 S9xGetAPUDSP() { - uint8 reg = IAPU.RAM [0xf2] & 0x7f; - uint8 byte = APU.DSP [reg]; - - switch (reg) - { - case APU_KON: - break; - case APU_KOFF: - break; - case APU_OUTX + 0x00: - case APU_OUTX + 0x10: - case APU_OUTX + 0x20: - case APU_OUTX + 0x30: - case APU_OUTX + 0x40: - case APU_OUTX + 0x50: - case APU_OUTX + 0x60: - case APU_OUTX + 0x70: - if (SoundData.channels [reg >> 4].state == SOUND_SILENT) - return (0); - return ((SoundData.channels [reg >> 4].sample >> 8) | - (SoundData.channels [reg >> 4].sample & 0xff)); - - case APU_ENVX + 0x00: - case APU_ENVX + 0x10: - case APU_ENVX + 0x20: - case APU_ENVX + 0x30: - case APU_ENVX + 0x40: - case APU_ENVX + 0x50: - case APU_ENVX + 0x60: - case APU_ENVX + 0x70: - return ((uint8) S9xGetEnvelopeHeight (reg >> 4)); - - case APU_ENDX: - // To fix speech in Magical Drop 2 6/11/00 - // APU.DSP [APU_ENDX] = 0; - break; - default: - break; - } - return (byte); + uint8 reg = IAPU.RAM [0xf2] & 0x7f; + uint8 byte = APU.DSP [reg]; + + switch (reg) + { + case APU_KON: + break; + case APU_KOFF: + break; + case APU_OUTX + 0x00: + case APU_OUTX + 0x10: + case APU_OUTX + 0x20: + case APU_OUTX + 0x30: + case APU_OUTX + 0x40: + case APU_OUTX + 0x50: + case APU_OUTX + 0x60: + case APU_OUTX + 0x70: + if (SoundData.channels [reg >> 4].state == SOUND_SILENT) + return (0); + return ((SoundData.channels [reg >> 4].sample >> 8) | + (SoundData.channels [reg >> 4].sample & 0xff)); + + case APU_ENVX + 0x00: + case APU_ENVX + 0x10: + case APU_ENVX + 0x20: + case APU_ENVX + 0x30: + case APU_ENVX + 0x40: + case APU_ENVX + 0x50: + case APU_ENVX + 0x60: + case APU_ENVX + 0x70: + return ((uint8) S9xGetEnvelopeHeight(reg >> 4)); + + case APU_ENDX: + // To fix speech in Magical Drop 2 6/11/00 + // APU.DSP [APU_ENDX] = 0; + break; + default: + break; + } + return (byte); } |