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equivalent, down to regswaps

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roeming
2025-03-21 17:30:18 -04:00
parent f8034c5dfa
commit c9bb307991
1 changed files with 203 additions and 126 deletions
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src/static/jaudio_NES/game/emusound.c
+203 -126
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@@ -98,25 +98,24 @@ typedef struct _NESSoundStructF {
} _04p;
};
u32 _08;
u16 _0C;
u16 _0E;
u32 _0C;
u32 _10;
u32 _14;
u16 _14;
u16 _16;
u32 _18;
u8 _1C;
u8 _1D;
u16 _1C;
// bad padding
u32 _20;
u32 _24;
u8 _28;
// bad padding
u16 _2A;
u32 _28;
u8 _2C;
u8 _2D;
u8 _2E;
u8 _2F;
// bad padding
u8 _30[9];
u32 _30;
u32 _34;
u8 _38;
u8 _39;
u8 _3A;
u8 _3B;
@@ -124,11 +123,14 @@ typedef struct _NESSoundStructF {
// bad padding
u16 _3E;
u16 _40;
u16 _42;
u8 _44;
artificial_padding(0x44, 0x47, u8);
u8 _42;
u8 _43;
s8 _44;
u8 _45;
u8 _46;
u8 _47;
u16 _48;
u8 _48;
u8 _49;
u8 _4A;
// bad padding
} NESSoundStructF; // size 0x48
@@ -141,26 +143,25 @@ NESSoundStruct SoundX, SoundY, SoundZ;
NESSoundStruct SoundM, SoundN;
NESSoundStructF SoundF;
NESSoundStruct3 SoundP;
u32 FRAME_SYNC_FLAG;
u32 FRAME_SYNC_COUNTER;
u32 PHASE_SYNC_FLAG;
u32 PHASE_SYNC_COUNTER;
u8 DUMMY_ACTIVE[9];
// sdata
u32 NOISE_MASTER = 1;
u32 NOISE_SHIFT = 0x800;
u32 PHASE_SAMPLE = 0x85;
u32 FRAME_SAMPLE = 0x215;
const u64 _STOP = 0;
u32 _STOP[2] = { 0 };
// sbss
u8 beforemode;
u8 move_to_50;
u8 MMC_MODE;
u8* NOISE_DTABLE;
u32 PHASE_SYNC_FLAG;
u32 FRAME_SYNC_FLAG;
u32 PHASE_SYNC_COUNTER;
u32 FRAME_SYNC_COUNTER;
s8 NOISE_PULSE;
u32 delta_counter;
s8 delta_sign;
s32 bias;
s32 bias_move;
f32 voltage;
f32 voltage_out;
// data
@@ -237,6 +238,22 @@ typedef struct _DMCChannel {
u8 SampleLength : 8;
} DMCChannel;
typedef struct _WaveTableEntry {
u8 Read : 2;
u8 Sample : 6;
} WaveTableEntry;
typedef struct _unknown_C0 {
u8 _0_7 : 1; // 10000000
u8 _0_6 : 3; // 01000000
u8 _0_3 : 4; // 00001111
u8 _1;
u8 _2;
u8 _3_7 : 1; // 10000000
u8 _3_6 : 3; // 01000000
u8 _3_3 : 4; // 00001111
} Unknown_VRC;
typedef struct _APURegisters {
// $4000
PulseChannel Pulse1;
@@ -266,15 +283,66 @@ typedef struct _APURegisters {
u8 FrameCounter_DisableFrameInterrupt : 1;
u8 _unused_4017_low : 6;
artificial_padding(0x17, 0x40, u8);
// $4040 - $4079 https://www.nesdev.org/wiki/FDS_audio#Wavetable_RAM_($4040-$407F)
WaveTableEntry WaveTable[0x40];
// $4080 https://www.nesdev.org/wiki/FDS_audio#Volume_envelope_($4080)
u8 VolumeEnvelopeEnabled : 1;
u8 VolumeEnvelopeIncreasing : 1;
u8 VolumeEnvelopeGainAndSpeed : 6;
// $4081
u8 _unused_4081;
// $4082 https://www.nesdev.org/wiki/FDS_audio#Frequency_low_($4082)
u8 FrequencyLow;
// $4083 https://www.nesdev.org/wiki/FDS_audio#Frequency_high_($4083)
u8 HighSpeedFrequency : 1;
u8 DisableSweepAndEnvelope : 1;
u8 _unused_4083_midbits : 2;
u8 FrequencyHigh : 4;
// $4084 https://www.nesdev.org/wiki/FDS_audio#Mod_envelope_($4084)
u8 ModEnvelopeEnabled : 1;
u8 ModEnvelopeIncreasing : 1;
u8 ModEnvelopeGainAndSpeed : 6;
// $4085 https://www.nesdev.org/wiki/FDS_audio#Mod_counter_($4085)
u8 _unused_4085_high : 1;
u8 ModCounter : 7;
// $4086 https://www.nesdev.org/wiki/FDS_audio#Mod_frequency_low_($4086)
u8 ModFrequencyLow;
// $4087 https://www.nesdev.org/wiki/FDS_audio#Mod_frequency_high_($4087)
u8 HaltModTableCounter : 1;
u8 ForceAccumulatorStepOut : 1;
u8 _unused_4087_mid : 2;
u8 ModFrequencyHigh : 4;
// $4088 https://www.nesdev.org/wiki/FDS_audio#Mod_table_write_($4088)
// unused in the following code
u8 _unused_4088_high : 5;
u8 ModulationTableWrite : 3;
// $4089 https://www.nesdev.org/wiki/FDS_audio#Wave_write_/_master_volume_($4089)
u8 WaveTableWriteEnable : 1;
u8 _unused_4089_midbits : 5;
u8 WaveTableMasterVolume : 2;
// $408A https://www.nesdev.org/wiki/FDS_audio#Envelope_speed_($408A)
u8 EnvelopeSpeed;
artificial_padding(0x8a, 0xc0, u8);
Unknown_VRC _C0;
Unknown_VRC _C4;
Unknown_VRC _C8;
artificial_padding(0xc8, 0xd5, Unknown_VRC);
u8 _unused_D5_high : 5;
u8 _D5_2 : 1;
u8 _D5_1 : 1;
u8 _D5_0 : 1;
} APURegisters;
typedef struct _sbufferStruct {
typedef union _sbufferStruct {
APURegisters apu;
u8 buff[0x4100 - (0x4000 + sizeof(APURegisters))];
u8 buff[0x4100 - 0x4000];
} sbufferStruct;
sbufferStruct sbuffer = { 0 };
#define SBUFFER ((u8*)&sbuffer)
u8 LEN_TABLE_HVC[] = { 0x05, 0x7e, 0x0a, 0x01, 0x13, 0x02, 0x28, 0x03, 0x50, 0x04, 0x1e, 0x05, 0x07, 0x06, 0x0d, 0x07,
0x06, 0x08, 0x0c, 0x09, 0x18, 0x0a, 0x30, 0x0b, 0x60, 0x0c, 0x24, 0x0d, 0x08, 0x0e, 0x10, 0x0f };
@@ -336,12 +404,6 @@ u8 VOLTABLE_VRCPULSE[] = { 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e, 0x10,
0x16, 0x18, 0x1a, 0x1c, 0x1e, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25,
0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f };
// UNUSED
void* PCM[9] = { (void*)&_STOP, (void*)&_STOP, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
// UNUSED
u32 PCMSIZE[9] = { sizeof(_STOP), sizeof(_STOP), 0, 0, 0, 0, 0, 0, 0 };
s32 __GetWave_Pulse(s32 a, s32 b) {
switch (a) {
@@ -409,7 +471,7 @@ u32 __PitchTo32_HVC(u16 pitch) {
void __Sound_Write_VRC(u16 a, u8 b) {
NESSoundStruct* pSound;
u8* pBuffer;
Unknown_VRC* pBuffer;
int v;
int xyzIndex;
@@ -417,15 +479,15 @@ void __Sound_Write_VRC(u16 a, u8 b) {
if (index <= 3) {
pSound = &SoundX;
xyzIndex = 0;
pBuffer = &SBUFFER[192];
pBuffer = &sbuffer.apu._C0;
} else if (index <= 7) {
pSound = &SoundY;
xyzIndex = 1;
pBuffer = &SBUFFER[196];
pBuffer = &sbuffer.apu._C4;
} else {
pSound = &SoundZ;
xyzIndex = 2;
pBuffer = &SBUFFER[200];
pBuffer = &sbuffer.apu._C8;
}
if (index == 21) {
@@ -443,10 +505,10 @@ void __Sound_Write_VRC(u16 a, u8 b) {
switch (index & 3) {
case 0: {
pSound->_3C = pBuffer[0] >> 4 & 7;
pSound->_28 = pBuffer[0] >> 7 & 1;
pSound->_1C = VOLTABLE_VRCPULSE[pBuffer[0] & 0xf];
pSound->_1D = pBuffer[0] & 0xf;
pSound->_3C = pBuffer->_0_6;
pSound->_28 = pBuffer->_0_7;
pSound->_1C = VOLTABLE_VRCPULSE[pBuffer->_0_3];
pSound->_1D = pBuffer->_0_3;
pSound->_2A = pSound->_1D;
if (xyzIndex == 2) {
pSound->_24 = ((pSound->_3C & 3) << 4) | pSound->_2A;
@@ -457,7 +519,7 @@ void __Sound_Write_VRC(u16 a, u8 b) {
}
} break;
case 2: {
pSound->_0C = ((pBuffer[3] & 0xf) << 8) | pBuffer[2];
pSound->_0C = (pBuffer->_3_3 << 8) | pBuffer->_2;
if (xyzIndex == 2) {
pSound->_08 = __PitchTo32_VRC_C(pSound->_0C);
} else {
@@ -465,7 +527,7 @@ void __Sound_Write_VRC(u16 a, u8 b) {
}
} break;
case 3: {
pSound->_0C = ((pBuffer[3] & 0xf) << 8) | pBuffer[2];
pSound->_0C = (pBuffer->_3_3 << 8) | pBuffer->_2;
if (xyzIndex == 2) {
pSound->_08 = __PitchTo32_VRC_C(pSound->_0C);
} else {
@@ -477,16 +539,16 @@ void __Sound_Write_VRC(u16 a, u8 b) {
}
if (xyzIndex == 0) {
v = SBUFFER[213] & 1;
v = sbuffer.apu._D5_0;
}
if (xyzIndex == 1) {
v = SBUFFER[213] >> 1 & 1;
v = sbuffer.apu._D5_1;
}
if (xyzIndex == 2) {
v = SBUFFER[213] >> 2 & 1;
v = sbuffer.apu._D5_2;
}
if ((u8)v == 1 && (pBuffer[3] >> 7) & 1) {
if ((u8)v == 1 && pBuffer->_3_7) {
pSound->_00 = 1;
} else {
pSound->_00 = 0;
@@ -500,7 +562,7 @@ void __Sound_Write_VRC(u16 a, u8 b) {
void __Sound_Write_MMC5(u16 a, u8 b) {
NESSoundStruct* pSound;
u8* pBuffer;
PulseChannel* pBuffer;
u32 v;
int xyzIndex;
@@ -509,15 +571,15 @@ void __Sound_Write_MMC5(u16 a, u8 b) {
if (index <= 3) {
pSound = &SoundX;
xyzIndex = 0;
pBuffer = &SBUFFER[192];
pBuffer = (PulseChannel*)&sbuffer.apu._C0;
} else if (index <= 7) {
pSound = &SoundY;
xyzIndex = 1;
pBuffer = &SBUFFER[196];
pBuffer = (PulseChannel*)&sbuffer.apu._C4;
}
if (index == 17) {
SoundZ._3E = (b << 6) & 0x3fc0;
SoundZ._3E = (b & 0xff) << 6;
} else if (index == 21) {
if (!(b & 1)) {
SoundX._00 = 0;
@@ -528,15 +590,15 @@ void __Sound_Write_MMC5(u16 a, u8 b) {
} else if (pBuffer) {
switch (index & 3) {
case 0: {
pSound->_3C = (pBuffer[0] >> 6) & 0x3;
pSound->_3C = pBuffer->Duty;
v = pSound->_28;
pSound->_28 = (pBuffer[0] >> 4 & 1) ^ 1;
pSound->_14 = (pBuffer[0] >> 5 & 1);
pSound->_1D = VOLTABLE_HVCPULSE[pBuffer[0] & 0xf];
pSound->_28 = pBuffer->ConstantVolume ^ 1;
pSound->_14 = pBuffer->EnvelopeLoopCounter;
pSound->_1D = VOLTABLE_HVCPULSE[pBuffer->EnvelopePeriod_Volume];
if (pSound->_28 == 0 && pSound->_00 == 1) {
pSound->_1C = VOLTABLE_HVCPULSE[pBuffer[0] & 0xf];
pSound->_1C = VOLTABLE_HVCPULSE[pBuffer->EnvelopePeriod_Volume];
} else {
pSound->_24 = PHASE_SAMPLE * ((pBuffer[0] & 0xf) + 1);
pSound->_24 = PHASE_SAMPLE * (pBuffer->EnvelopePeriod_Volume + 1);
if (v == 0) {
pSound->_2A = 0xf;
pSound->_20 = 0;
@@ -544,30 +606,30 @@ void __Sound_Write_MMC5(u16 a, u8 b) {
}
} break;
case 2: {
pSound->_0C = ((pBuffer[3] & 0x7) << 8) | pBuffer[2];
pSound->_0C = pBuffer->TimerHigh << 8 | pBuffer->TimerLow;
pSound->_08 = __PitchTo32_HVC_C(pSound->_0C);
} break;
case 3: {
pSound->_0C = ((pBuffer[3] & 0x7) << 8) | pBuffer[2];
pSound->_0C = pBuffer->TimerHigh << 8 | pBuffer->TimerLow;
pSound->_08 = __PitchTo32_HVC_C(pSound->_0C);
pSound->_18 = LEN_TABLE_HVC[(pBuffer[3] >> 3) & 0x1f];
pSound->_18 = LEN_TABLE_HVC[pBuffer->LengthCounterLow];
pSound->_10 = FRAME_SAMPLE * pSound->_18;
if (!pSound->_00 && !pSound->_3E) {
pSound->_04 = 0;
}
if (xyzIndex == 0) {
v = SBUFFER[213] & 1;
v = sbuffer.apu._D5_0;
}
if (xyzIndex == 1) {
v = SBUFFER[213] >> 1 & 1;
v = sbuffer.apu._D5_1;
}
if ((v & 0xff) != 0) {
pSound->_00 = 1;
}
if ((pBuffer[0] >> 4 & 1) == 0) {
if (pBuffer->ConstantVolume == 0) {
pSound->_1C = VOLTABLE_HVCPULSE[15];
} else {
pSound->_1C = pSound->_1D;
@@ -1071,6 +1133,13 @@ s8 __GetNoise(u32 a) {
}
}
u32 delta_counter;
s8 delta_sign;
s32 bias_move;
s32 bias;
f32 voltage;
f32 voltage_out;
int __ProcessSoundD() {
s16 ret;
if (!SoundD._00) {
@@ -1318,7 +1387,6 @@ void __Sound_Write_C(u16 a, u8 b) {
} break;
}
}
u32 exitflag;
int __ProcessSoundC() {
static s16 timer = 0;
@@ -1368,10 +1436,7 @@ int __ProcessSoundC() {
u8 DISKSUB_TABLE[32];
s16 disksubwave[32][2];
s8 DISK_SUB_GAIN[] = { 0, 1, 2, 4, 0, -4, -2, -1 };
u8* NOISE_DTABLE;
MixCallback old_mixcall;
u8 old_mixmode;
void __CreateDiskSubWave() {
for (int i = 0; i < 32; i++) {
disksubwave[i][0] = DISK_SUB_GAIN[DISKSUB_TABLE[i]];
@@ -1383,6 +1448,8 @@ u32 __PitchTo32_DISKFM(u16 v) {
return (0.85343015f * (int)v) / 500.4375f * 32768.f;
}
u32 DISK_FRAME_SAMPLE = 0x215;
void __Sound_Write_Disk(u16 a, u8 b) {
static int shiftr = 0;
((u8*)&sbuffer)[a] = b;
@@ -1392,78 +1459,86 @@ void __Sound_Write_Disk(u16 a, u8 b) {
SoundF._2C = 0;
}
} else if (a >= 0x40 && a <= 0x7f) {
DISKFM_TABLE[a - 0x40] = SBUFFER[a] & 0x3f;
DISKFM_TABLE[a - 0x40] = ((WaveTableEntry*)&sbuffer.buff[a])->Sample;
} else {
switch (a) {
case 0x80: {
s8 c = -((char)SBUFFER[128] >> 7);
SoundF._2E = SBUFFER[128] >> 6 & 1;
if (c == 1) {
SoundF._2E = SBUFFER[128] & 0x3F;
u32 old_2c = SoundF._2C;
SoundF._2C = sbuffer.apu.VolumeEnvelopeEnabled;
SoundF._2E = sbuffer.apu.VolumeEnvelopeIncreasing;
if (SoundF._2C == 1) {
SoundF._2D = sbuffer.apu.VolumeEnvelopeGainAndSpeed;
} else {
SoundF._28 = (DISK_FRAME_SAMPLE * (sbuffer.apu.VolumeEnvelopeGainAndSpeed + 1)) >> 4;
}
if (SoundF._2C != old_2c) {
SoundF._24 = 0;
}
} break;
case 0x82: {
s8 c = -((char)SBUFFER[128] >> 7);
SoundF._2E = SBUFFER[128] >> 6 & 1;
if (c == 1) {
SoundF._2E = SBUFFER[128] & 0x3F;
}
SoundF._14 = sbuffer.apu.FrequencyHigh << 8 | sbuffer.apu.FrequencyLow;
SoundF._10 = __PitchTo32_DISKFM(SoundF._14);
} break;
case 0x83: {
s8 c = -((char)SBUFFER[128] >> 7);
SoundF._2E = SBUFFER[128] >> 6 & 1;
if (c == 1) {
SoundF._2E = SBUFFER[128] & 0x3F;
SoundF._14 = sbuffer.apu.FrequencyHigh << 8 | sbuffer.apu.FrequencyLow;
SoundF._10 = __PitchTo32_DISKFM(SoundF._14);
if (sbuffer.apu.HighSpeedFrequency) {
SoundF._04 = 0;
}
} break;
case 0x84: {
s8 c = -((char)SBUFFER[128] >> 7);
SoundF._2E = SBUFFER[128] >> 6 & 1;
if (c == 1) {
SoundF._2E = SBUFFER[128] & 0x3F;
u32 c = SoundF._38;
SoundF._38 = sbuffer.apu.ModEnvelopeEnabled;
SoundF._3A = sbuffer.apu.ModEnvelopeIncreasing;
if (SoundF._38 == 1) {
SoundF._39 = sbuffer.apu.ModEnvelopeGainAndSpeed;
} else {
SoundF._34 = (DISK_FRAME_SAMPLE * (sbuffer.apu.ModEnvelopeGainAndSpeed + 1)) >> 4;
}
if (SoundF._38 != c) {
SoundF._30 = 0;
}
} break;
case 0x85: {
s8 c = -((char)SBUFFER[128] >> 7);
SoundF._2E = SBUFFER[128] >> 6 & 1;
if (c == 1) {
SoundF._2E = SBUFFER[128] & 0x3F;
SoundF._44 = sbuffer.apu.ModCounter;
if (SoundF._44 & 0x40) {
SoundF._44 |= 0x80;
}
} break;
case 0x86: {
s8 c = -((char)SBUFFER[128] >> 7);
SoundF._2E = SBUFFER[128] >> 6 & 1;
if (c == 1) {
SoundF._2E = SBUFFER[128] & 0x3F;
}
SoundF._1C = sbuffer.apu.ModFrequencyHigh << 8 | sbuffer.apu.ModFrequencyLow;
SoundF._18 = __PitchTo32_DISKFM(SoundF._1C);
} break;
case 0x87: {
s8 c = -((char)SBUFFER[128] >> 7);
SoundF._2E = SBUFFER[128] >> 6 & 1;
if (c == 1) {
SoundF._2E = SBUFFER[128] & 0x3F;
u32 c = sbuffer.apu.HaltModTableCounter;
SoundF._1C = sbuffer.apu.ModFrequencyHigh << 8 | sbuffer.apu.ModFrequencyLow;
SoundF._18 = __PitchTo32_DISKFM(SoundF._1C);
SoundF._46 = sbuffer.apu.HaltModTableCounter;
if (!SoundF._46 && c == 1) {
__CreateDiskSubWave();
}
if (SoundF._46) {
shiftr = 0;
}
SoundF._0C = -1;
SoundF._08 = 0;
SoundF._47 = 0;
} break;
case 0x88: {
s8 c = -((char)SBUFFER[128] >> 7);
SoundF._2E = SBUFFER[128] >> 6 & 1;
if (c == 1) {
SoundF._2E = SBUFFER[128] & 0x3F;
if (shiftr < 0x20) {
DISKSUB_TABLE[shiftr & 0x1f] = b & 7;
if (++shiftr == 0x20) {
__CreateDiskSubWave();
}
}
} break;
case 0x89: {
s8 c = -((char)SBUFFER[128] >> 7);
SoundF._2E = SBUFFER[128] >> 6 & 1;
if (c == 1) {
SoundF._2E = SBUFFER[128] & 0x3F;
}
SoundF._43 = DISKFM_GAINTABLE[sbuffer.apu.WaveTableMasterVolume];
SoundF._45 = sbuffer.apu.WaveTableWriteEnable;
} break;
case 0x8a: {
s8 c = -((char)SBUFFER[128] >> 7);
SoundF._2E = SBUFFER[128] >> 6 & 1;
if (c == 1) {
SoundF._2E = SBUFFER[128] & 0x3F;
}
SoundF._48 = sbuffer.apu.EnvelopeSpeed;
} break;
}
}
@@ -1580,18 +1655,15 @@ void ForceProcessPhaseCounter() {
void Sound_Make_HVC(s32 count, s16* v) {
static int lastsample;
int j;
int a, b, c, d, e;
int i;
HS_Event_Update();
for (i = 0; i < count; i++) {
for (int i = 0; i < count; i++) {
ProcessPhaseCounter();
a = __ProcessSoundA();
b = __ProcessSoundB();
c = __ProcessSoundC();
d = __ProcessSoundD();
e = __ProcessSoundE();
j = (s16)a + (s16)b - (s16)c - (s16)d + (s16)e;
int a = __ProcessSoundA();
int b = __ProcessSoundB();
int c = __ProcessSoundC();
int d = __ProcessSoundD();
int e = __ProcessSoundE();
int j = (s16)a + (s16)b - (s16)c - (s16)d + (s16)e;
if (j >= 0x7fff) {
j = 0x7fff;
} else if (j <= -0x7fff) {
@@ -1729,7 +1801,9 @@ void Sound_Reset() {
Buffer_Reset();
}
u8 move_to_50;
u32 exitflag;
MixCallback old_mixcall;
u8 old_mixmode;
s16* __FrameCallback(s32 a) {
static s16 buf[0x320];
@@ -1821,9 +1895,6 @@ void Sound_SetE000(u8* romTop) {
ROM_TOP_E000 = romTop;
}
u8 MMC_MODE;
u8 beforemode;
void Sound_SetMMC(u8 mmcMode) {
FRAME_SAMPLE = 0x280;
PHASE_SAMPLE = 0xa0;
@@ -1903,3 +1974,9 @@ void __Sound_Write_HVC(u16 index, u8 v) {
}
}
}
// UNUSED
void* PCM[9] = { (void*)&_STOP, (void*)&_STOP, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
// UNUSED
u32 PCMSIZE[9] = { sizeof(_STOP), sizeof(_STOP), 0, 0, 0, 0, 0, 0, 0 };