Skelton for retropc emulator
Author : Takeda.Toshiya
- Date : 2017.02.02-
+ Date : 2006.09.15-
- [ AY-3-8910 / 8912 / 8913 ]
- History:
- 2017-02-02: Fork from YM2203.
+ [ AY-3-8910 / AY-3-8912 / AY-3-8913 ]
*/
#include "ay_3_891x.h"
-#include <math.h>
-
-#define EVENT_PSG_TIMER 0
+#define EVENT_FM_TIMER 0
void AY_3_891X::initialize()
{
- psg = new PSG_AY_3_891X;
-
+ opn = new FM::OPN;
+ opn->is_ay3_891x = true;
+
register_vline_event(this);
mute = false;
clock_prev = clock_accum = clock_busy = 0;
-
- left_volume = right_volume = 256;
- v_left_volume = v_right_volume = 256;
}
void AY_3_891X::release()
{
- delete psg;
+ delete opn;
}
void AY_3_891X::reset()
{
touch_sound();
- psg->Reset();
+ opn->Reset();
fnum2 = 0;
// stop timer
+ timer_event_id = -1;
+ this->set_reg(0x27, 0);
+
#ifdef SUPPORT_AY_3_891X_PORT
port[0].first = port[1].first = true;
port[0].wreg = port[1].wreg = 0;//0xff;
irq_prev = busy = false;
}
-#define amask 1
-
void AY_3_891X::write_io8(uint32_t addr, uint32_t data)
{
- switch(addr & amask) {
+ switch(addr & 1) {
case 0:
ch = data & 0x0f;
break;
#endif
}
#endif
- {
+ if(0x2d <= ch && ch <= 0x2f) {
+ // don't write again for prescaler
+ } else if(0xa4 <= ch && ch <= 0xa6) {
+ // XM8 version 1.20
+ fnum2 = data;
+ } else {
update_count();
- // XM8 version 1.20
+ // XM8 version 1.20
+ if(0xa0 <= ch && ch <= 0xa2) {
+ this->set_reg(ch + 4, fnum2);
+ }
this->set_reg(ch, data);
+ if(ch == 0x27) {
+ update_event();
+ }
}
break;
}
uint32_t AY_3_891X::read_io8(uint32_t addr)
{
- switch(addr & amask) {
+ switch(addr & 1) {
case 1:
#ifdef SUPPORT_AY_3_891X_PORT
if(ch == 14) {
#endif
}
#endif
- return psg->GetReg(ch);
+ return opn->GetReg(ch);
}
return 0xff;
}
void AY_3_891X::event_callback(int event_id, int error)
{
update_count();
- //timer_event_id = -1;
+ timer_event_id = -1;
update_event();
}
clock_accum += clock_const * get_passed_clock(clock_prev);
uint32_t count = clock_accum >> 20;
if(count) {
- //psg->Count(count);
+ opn->Count(count);
clock_accum -= count << 20;
}
clock_prev = get_current_clock();
void AY_3_891X::update_event()
{
- //if(timer_event_id != -1) {
- // cancel_event(this, timer_event_id);
- // timer_event_id = -1;
- //}
+ if(timer_event_id != -1) {
+ cancel_event(this, timer_event_id);
+ timer_event_id = -1;
+ }
- //int count;
- //count = psg->GetNextEvent();
+ int count;
+ count = opn->GetNextEvent();
- //if(count > 0) {
- // register_event(this, EVENT_PSG_TIMER, 1000000.0 / (double)chip_clock * (double)count, false, &timer_event_id);
- //}
-}
-
-
-inline int32_t VCALC(int32_t x, int32_t y)
-{
- x = x * y;
- x = x >> 8;
- return x;
-}
-
-inline int32_t SATURATION_ADD(int32_t x, int32_t y)
-{
- x = x + y;
- if(x < -0x8000) x = -0x8000;
- if(x > 0x7fff) x = 0x7fff;
- return x;
+ if(count > 0) {
+ register_event(this, EVENT_FM_TIMER, 1000000.0 / (double)chip_clock * (double)count, false, &timer_event_id);
+ }
}
-
void AY_3_891X::mix(int32_t* buffer, int cnt)
{
if(cnt > 0 && !mute) {
- int32_t *dbuffer = (int32_t *)malloc((cnt * 2 + 2) * sizeof(int32_t));
- memset((void *)dbuffer, 0x00, (cnt * 2 + 2) * sizeof(int32_t));
-
- psg->Mix(dbuffer, cnt);
- int32_t *p = dbuffer;
- int32_t *q = buffer;
- int32_t tmp[8];
- int32_t tvol[8] = {v_left_volume, v_right_volume,
- v_left_volume, v_right_volume,
- v_left_volume, v_right_volume,
- v_left_volume, v_right_volume};
- int i;
- // More EXCEPTS to optimize to SIMD features.
- for(i = 0; i < cnt / 4; i++) {
- tmp[0] = VCALC(p[0], tvol[0]);
- tmp[1] = VCALC(p[1], tvol[1]);
- tmp[2] = VCALC(p[2], tvol[2]);
- tmp[3] = VCALC(p[3], tvol[3]);
- tmp[4] = VCALC(p[4], tvol[4]);
- tmp[5] = VCALC(p[5], tvol[5]);
- tmp[6] = VCALC(p[6], tvol[6]);
- tmp[7] = VCALC(p[7], tvol[7]);
-
- q[0] = SATURATION_ADD(q[0], tmp[0]);
- q[1] = SATURATION_ADD(q[1], tmp[1]);
- q[2] = SATURATION_ADD(q[2], tmp[2]);
- q[3] = SATURATION_ADD(q[3], tmp[3]);
-
- q[4] = SATURATION_ADD(q[4], tmp[4]);
- q[5] = SATURATION_ADD(q[5], tmp[5]);
- q[6] = SATURATION_ADD(q[6], tmp[6]);
- q[7] = SATURATION_ADD(q[7], tmp[7]);
- q += 8;
- p += 8;
- }
- if((cnt & 3) != 0) {
- for(i = 0; i < (cnt & 3); i++) {
- tmp[0] = VCALC(p[0], tvol[0]);
- tmp[1] = VCALC(p[1], tvol[1]);
-
- q[0] = SATURATION_ADD(q[0], tmp[0]);
- q[1] = SATURATION_ADD(q[1], tmp[1]);
- q += 2;
- p += 2;
- }
- }
- free(dbuffer);
+ opn->Mix(buffer, cnt);
}
}
void AY_3_891X::set_volume(int ch, int decibel_l, int decibel_r)
{
- v_right_volume = (int)(pow(10.0, (double)decibel_vol / 10.0) * (double)right_volume);
- v_left_volume = (int)(pow(10.0, (double)decibel_vol / 10.0) * (double)left_volume);
if(ch == 0) {
- psg->SetVolume(base_decibel_psg + decibel_l, base_decibel_psg + decibel_r);
+ opn->SetVolumeFM(base_decibel_fm + decibel_l, base_decibel_fm + decibel_r);
+ } else if(ch == 1) {
+ opn->SetVolumePSG(base_decibel_psg + decibel_l, base_decibel_psg + decibel_r);
}
}
void AY_3_891X::initialize_sound(int rate, int clock, int samples, int decibel_fm, int decibel_psg)
{
- //psg->Init(clock, rate, false, NULL);
- psg->Init(clock, rate);
- psg->SetVolume(decibel_psg, decibel_psg);
+ opn->Init(clock, rate, false, NULL);
+ opn->SetVolumeFM(decibel_fm, decibel_fm);
+ opn->SetVolumePSG(decibel_psg, decibel_psg);
+
+ base_decibel_fm = decibel_fm;
base_decibel_psg = decibel_psg;
+
chip_clock = clock;
}
void AY_3_891X::set_reg(uint32_t addr, uint32_t data)
{
touch_sound();
- if((addr >= 0x2d) && (addr <= 0x2f)) {
- psg->SetPrescaler(addr - 0x2d);
- return;
- }
- psg->SetReg(addr, data);
+ opn->SetReg(addr, data);
}
void AY_3_891X::update_timing(int new_clocks, double new_frames_per_sec, int new_lines_per_frame)
clock_const = (uint32_t)((double)chip_clock * 1024.0 * 1024.0 / (double)new_clocks + 0.5);
}
-#define STATE_VERSION 1
+#define STATE_VERSION 3
void AY_3_891X::save_state(FILEIO* state_fio)
{
state_fio->FputUint32(STATE_VERSION);
state_fio->FputInt32(this_device_id);
- psg->SaveState((void *)state_fio);
+
+ opn->SaveState((void *)state_fio);
state_fio->FputUint8(ch);
state_fio->FputUint8(fnum2);
#ifdef SUPPORT_AY_3_891X_PORT
state_fio->FputUint32(clock_accum);
state_fio->FputUint32(clock_const);
state_fio->FputUint32(clock_busy);
- //state_fio->FputInt32(timer_event_id);
+ state_fio->FputInt32(timer_event_id);
state_fio->FputBool(busy);
- state_fio->FputInt32(decibel_vol);
- state_fio->FputInt32(left_volume);
- state_fio->FputInt32(right_volume);
- state_fio->FputInt32(v_left_volume);
- state_fio->FputInt32(v_right_volume);
}
bool AY_3_891X::load_state(FILEIO* state_fio)
if(state_fio->FgetInt32() != this_device_id) {
return false;
}
- if(!psg->LoadState((void *)state_fio)) {
+ if(!opn->LoadState((void *)state_fio)) {
return false;
}
ch = state_fio->FgetUint8();
clock_accum = state_fio->FgetUint32();
clock_const = state_fio->FgetUint32();
clock_busy = state_fio->FgetUint32();
- //timer_event_id = state_fio->FgetInt32();
+ timer_event_id = state_fio->FgetInt32();
busy = state_fio->FgetBool();
-
- decibel_vol = state_fio->FgetInt32();
- left_volume = state_fio->FgetInt32();
- right_volume = state_fio->FgetInt32();
- v_left_volume = state_fio->FgetInt32();
- v_right_volume = state_fio->FgetInt32();
- //touch_sound();
-
return true;
}
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