866 lines
25 KiB
C++
866 lines
25 KiB
C++
/**
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* Furnace Tracker - multi-system chiptune tracker
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* Copyright (C) 2021-2023 tildearrow and contributors
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "ay8930.h"
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#include "../engine.h"
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#include "../../ta-log.h"
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#include "sound/ay8910.h"
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#include <string.h>
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#include <math.h>
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#define rWrite(a,v) if (!skipRegisterWrites) {pendingWrites[a]=v;}
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#define immWrite2(a,v) if (!skipRegisterWrites) {writes.push(QueuedWrite(a,v)); if (dumpWrites) {addWrite(a,v);} }
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#define CHIP_DIVIDER (clockSel?8:4)
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const char* regCheatSheetAY8930[]={
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"FreqL_A", "00",
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"FreqH_A", "01",
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"FreqL_B", "02",
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"FreqH_B", "03",
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"FreqL_C", "04",
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"FreqH_C", "05",
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"FreqNoise", "06",
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"Enable", "07",
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"Volume_A", "08",
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"Volume_B", "09",
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"Volume_C", "0A",
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"FreqL_EnvA", "0B",
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"FreqH_EnvA", "0C",
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"Control_EnvA", "0D",
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"PortA", "0E",
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"PortB", "0F",
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"FreqL_EnvB", "10",
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"FreqH_EnvB", "11",
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"FreqL_EnvC", "12",
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"FreqH_EnvC", "13",
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"Control_EnvB", "14",
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"Control_EnvC", "15",
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"Duty_A", "16",
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"Duty_B", "17",
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"Duty_C", "18",
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"NoiseAND", "19",
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"NoiseOR", "1A",
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"TEST", "1F",
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NULL
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};
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void DivPlatformAY8930::immWrite(unsigned char a, unsigned char v) {
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if ((int)bank!=(a>>4)) {
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bank=a>>4;
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immWrite2(0x0d, 0xa0|(bank<<4)|chan[0].envelope.mode);
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}
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if (a==0x0d) {
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immWrite2(0x0d,0xa0|(bank<<4)|(v&15));
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} else {
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immWrite2(a&15,v);
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}
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}
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const char** DivPlatformAY8930::getRegisterSheet() {
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return regCheatSheetAY8930;
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}
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/* C program to generate this table:
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#include <stdio.h>
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#include <math.h>
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int main(int argc, char** argv) {
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for (int i=0; i<256; i++) {
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if ((i&15)==0) printf("\n ");
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printf(" %d,",(int)round(pow((double)i/255.0,0.3)*31.0));
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}
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}
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*/
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const unsigned char dacLogTableAY8930[256]={
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0, 6, 7, 8, 9, 10, 10, 11, 11, 11, 12, 12, 12, 13, 13, 13,
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14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16,
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17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19,
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19, 19, 19, 19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20,
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20, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22,
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22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23,
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23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
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24, 24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
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25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
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26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27,
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27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28, 28, 28, 28,
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28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
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28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
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29, 29, 29, 29, 29, 29, 29, 29, 29, 30, 30, 30, 30, 30, 30, 30,
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30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,
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30, 30, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31
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};
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void DivPlatformAY8930::runDAC() {
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for (int i=0; i<3; i++) {
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if (chan[i].active && chan[i].curPSGMode.dac && chan[i].dac.sample!=-1) {
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chan[i].dac.period+=chan[i].dac.rate;
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bool end=false;
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bool changed=false;
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int prevOut=chan[i].dac.out;
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while (chan[i].dac.period>rate && !end) {
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DivSample* s=parent->getSample(chan[i].dac.sample);
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if (s->samples<=0) {
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chan[i].dac.sample=-1;
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immWrite(0x08+i,0);
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end=true;
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break;
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}
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unsigned char dacData=dacLogTableAY8930[(unsigned char)s->data8[chan[i].dac.pos]^0x80];
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chan[i].dac.out=(chan[i].active && !isMuted[i])?MAX(0,dacData-(31-chan[i].outVol)):0;
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if (prevOut!=chan[i].dac.out) {
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prevOut=chan[i].dac.out;
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changed=true;
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}
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chan[i].dac.pos++;
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if (s->isLoopable() && chan[i].dac.pos>=s->loopEnd) {
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chan[i].dac.pos=s->loopStart;
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} else if (chan[i].dac.pos>=(int)s->samples) {
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chan[i].dac.sample=-1;
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//immWrite(0x08+i,0);
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end=true;
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break;
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}
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chan[i].dac.period-=rate;
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}
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if (changed && !end) {
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if (!isMuted[i]) {
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immWrite(0x08+i,chan[i].dac.out);
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}
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}
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}
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}
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}
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void DivPlatformAY8930::checkWrites() {
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while (!writes.empty()) {
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QueuedWrite w=writes.front();
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ay->address_w(w.addr);
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ay->data_w(w.val);
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if (w.addr!=0x0d && (regPool[0x0d]&0xf0)==0xb0) {
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regPool[(w.addr&0x0f)|0x10]=w.val;
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} else {
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regPool[w.addr&0x0f]=w.val;
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}
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writes.pop();
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}
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}
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void DivPlatformAY8930::acquire(short** buf, size_t len) {
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if (ayBufLen<len) {
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ayBufLen=len;
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for (int i=0; i<3; i++) {
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delete[] ayBuf[i];
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ayBuf[i]=new short[ayBufLen];
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}
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}
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for (size_t i=0; i<len; i++) {
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runDAC();
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checkWrites();
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ay->sound_stream_update(ayBuf,1);
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if (stereo) {
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buf[0][i]=ayBuf[0][0]+ayBuf[1][0]+((ayBuf[2][0]*stereoSep)>>8);
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buf[1][i]=((ayBuf[0][0]*stereoSep)>>8)+ayBuf[1][0]+ayBuf[2][0];
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} else {
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buf[0][i]=ayBuf[0][0]+ayBuf[1][0]+ayBuf[2][0];
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buf[1][i]=buf[0][i];
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}
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oscBuf[0]->data[oscBuf[0]->needle++]=ayBuf[0][0]<<2;
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oscBuf[1]->data[oscBuf[1]->needle++]=ayBuf[1][0]<<2;
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oscBuf[2]->data[oscBuf[2]->needle++]=ayBuf[2][0]<<2;
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}
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}
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void DivPlatformAY8930::updateOutSel(bool immediate) {
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if (immediate) {
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immWrite(0x07,
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~((chan[0].curPSGMode.getTone())|
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((chan[1].curPSGMode.getTone())<<1)|
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((chan[2].curPSGMode.getTone())<<2)|
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((chan[0].curPSGMode.getNoise())<<2)|
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((chan[1].curPSGMode.getNoise())<<3)|
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((chan[2].curPSGMode.getNoise())<<4)|
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((!ioPortA)<<6)|
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((!ioPortB)<<7)));
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} else {
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rWrite(0x07,
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~((chan[0].curPSGMode.getTone())|
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((chan[1].curPSGMode.getTone())<<1)|
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((chan[2].curPSGMode.getTone())<<2)|
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((chan[0].curPSGMode.getNoise())<<2)|
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((chan[1].curPSGMode.getNoise())<<3)|
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((chan[2].curPSGMode.getNoise())<<4)|
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((!ioPortA)<<6)|
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((!ioPortB)<<7)));
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}
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}
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const unsigned char regPeriodL[3]={
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0x0b, 0x10, 0x12
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};
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const unsigned char regPeriodH[3]={
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0x0c, 0x11, 0x13
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};
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const unsigned char regMode[3]={
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0x0d, 0x14, 0x15
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};
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void DivPlatformAY8930::tick(bool sysTick) {
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// PSG
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for (int i=0; i<3; i++) {
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chan[i].std.next();
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if (chan[i].std.vol.had) {
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chan[i].outVol=MIN(31,chan[i].std.vol.val)-(31-(chan[i].vol&31));
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if (chan[i].outVol<0) chan[i].outVol=0;
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if (!chan[i].nextPSGMode.dac) {
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if (isMuted[i]) {
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rWrite(0x08+i,0);
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} else {
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rWrite(0x08+i,(chan[i].outVol&31)|((chan[i].nextPSGMode.getEnvelope())<<3));
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}
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}
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}
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if (NEW_ARP_STRAT) {
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chan[i].handleArp();
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} else if (chan[i].std.arp.had) {
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if (!chan[i].inPorta) {
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chan[i].baseFreq=NOTE_PERIODIC(parent->calcArp(chan[i].note,chan[i].std.arp.val));
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}
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chan[i].freqChanged=true;
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}
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if (chan[i].std.duty.had) {
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rWrite(0x06,chan[i].std.duty.val);
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}
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if (chan[i].std.wave.had) {
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if (!chan[i].nextPSGMode.dac) {
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chan[i].nextPSGMode.val=(chan[i].std.wave.val+1)&7;
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if (chan[i].active) {
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chan[i].curPSGMode.val=chan[i].nextPSGMode.val;
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}
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if (isMuted[i]) {
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rWrite(0x08+i,0);
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} else {
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rWrite(0x08+i,(chan[i].outVol&31)|((chan[i].nextPSGMode.getEnvelope())<<3));
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}
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}
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}
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if (chan[i].std.pitch.had) {
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if (chan[i].std.pitch.mode) {
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chan[i].pitch2+=chan[i].std.pitch.val;
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CLAMP_VAR(chan[i].pitch2,-65535,65535);
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} else {
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chan[i].pitch2=chan[i].std.pitch.val;
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}
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chan[i].freqChanged=true;
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}
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if (chan[i].std.phaseReset.had) {
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if (chan[i].std.phaseReset.val==1) {
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if (chan[i].nextPSGMode.dac) {
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if (dumpWrites) addWrite(0xffff0002+(i<<8),0);
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if (chan[i].dac.sample<0 || chan[i].dac.sample>=parent->song.sampleLen) {
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if (dumpWrites) {
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rWrite(0x08+i,0);
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addWrite(0xffff0000+(i<<8),chan[i].dac.sample);
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}
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chan[i].dac.pos=0;
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chan[i].dac.period=0;
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chan[i].keyOn=true;
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}
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}
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oldWrites[0x08+i]=-1;
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oldWrites[regMode[i]]=-1;
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}
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}
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if (chan[i].std.ex1.had) { // duty
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immWrite(0x16+i,chan[i].std.ex1.val);
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}
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if (chan[i].std.ex2.had) {
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chan[i].envelope.mode=chan[i].std.ex2.val;
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rWrite(regMode[i],chan[i].envelope.mode);
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}
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if (chan[i].std.ex3.had) {
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chan[i].autoEnvNum=chan[i].std.ex3.val;
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chan[i].freqChanged=true;
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if (!chan[i].std.alg.will) chan[i].autoEnvDen=1;
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}
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if (chan[i].std.alg.had) {
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chan[i].autoEnvDen=chan[i].std.alg.val;
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chan[i].freqChanged=true;
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if (!chan[i].std.ex3.will) chan[i].autoEnvNum=1;
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}
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if (chan[i].std.fb.had) {
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ayNoiseAnd=chan[i].std.fb.val;
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immWrite(0x19,ayNoiseAnd);
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}
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if (chan[i].std.fms.had) {
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ayNoiseOr=chan[i].std.fms.val;
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immWrite(0x1a,ayNoiseOr);
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}
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if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
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chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,true,0,chan[i].pitch2,chipClock,CHIP_DIVIDER);
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if (chan[i].dac.furnaceDAC) {
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double off=1.0;
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if (chan[i].dac.sample>=0 && chan[i].dac.sample<parent->song.sampleLen) {
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DivSample* s=parent->getSample(chan[i].dac.sample);
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if (s->centerRate<1) {
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off=1.0;
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} else {
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off=8363.0/(double)s->centerRate;
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}
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}
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chan[i].dac.rate=((double)chipClock*4.0)/(double)(MAX(1,off*chan[i].freq));
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if (dumpWrites) addWrite(0xffff0001+(i<<8),chan[i].dac.rate);
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}
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if (chan[i].freq<0) chan[i].freq=0;
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if (chan[i].freq>65535) chan[i].freq=65535;
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if (chan[i].keyOn) {
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if (!chan[i].nextPSGMode.dac) {
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chan[i].curPSGMode.val=chan[i].nextPSGMode.val;
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}
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if (chan[i].insChanged) {
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if (!chan[i].std.ex1.will) immWrite(0x16+i,chan[i].duty);
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chan[i].insChanged=false;
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}
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}
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if (chan[i].keyOff) {
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chan[i].curPSGMode.val=0;
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rWrite(0x08+i,0);
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}
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rWrite((i)<<1,chan[i].freq&0xff);
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rWrite(1+((i)<<1),chan[i].freq>>8);
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if (chan[i].keyOn) chan[i].keyOn=false;
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if (chan[i].keyOff) chan[i].keyOff=false;
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if (chan[i].freqChanged && chan[i].autoEnvNum>0 && chan[i].autoEnvDen>0) {
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chan[i].envelope.period=(chan[i].freq*chan[i].autoEnvDen/chan[i].autoEnvNum)>>4;
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immWrite(regPeriodL[i],chan[i].envelope.period);
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immWrite(regPeriodH[i],chan[i].envelope.period>>8);
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}
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chan[i].freqChanged=false;
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}
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if (chan[i].envelope.slide!=0) {
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chan[i].envelope.slideLow+=chan[i].envelope.slide;
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while (chan[i].envelope.slideLow>7) {
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chan[i].envelope.slideLow-=8;
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if (chan[i].envelope.period<0xffff) {
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chan[i].envelope.period++;
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immWrite(regPeriodL[i],chan[i].envelope.period);
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immWrite(regPeriodH[i],chan[i].envelope.period>>8);
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}
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}
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while (chan[i].envelope.slideLow<-7) {
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chan[i].envelope.slideLow+=8;
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if (chan[i].envelope.period>0) {
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chan[i].envelope.period--;
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immWrite(regPeriodL[i],chan[i].envelope.period);
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immWrite(regPeriodH[i],chan[i].envelope.period>>8);
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}
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}
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}
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}
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updateOutSel();
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for (int i=0; i<32; i++) {
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if (pendingWrites[i]!=oldWrites[i]) {
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immWrite(i,pendingWrites[i]&0xff);
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oldWrites[i]=pendingWrites[i];
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}
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}
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}
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int DivPlatformAY8930::dispatch(DivCommand c) {
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switch (c.cmd) {
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case DIV_CMD_NOTE_ON: {
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DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_AY8930);
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if (ins->type==DIV_INS_AMIGA || ins->amiga.useSample) {
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chan[c.chan].nextPSGMode.dac=true;
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} else if (chan[c.chan].dac.furnaceDAC) {
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chan[c.chan].nextPSGMode.dac=false;
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}
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if (chan[c.chan].nextPSGMode.dac) {
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if (skipRegisterWrites) break;
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if (ins->type==DIV_INS_AMIGA || ins->amiga.useSample) {
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if (c.value!=DIV_NOTE_NULL) {
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chan[c.chan].dac.sample=ins->amiga.getSample(c.value);
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c.value=ins->amiga.getFreq(c.value);
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}
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if (chan[c.chan].dac.sample<0 || chan[c.chan].dac.sample>=parent->song.sampleLen) {
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chan[c.chan].dac.sample=-1;
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if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
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break;
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} else {
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if (dumpWrites) {
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rWrite(0x08+c.chan,0);
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addWrite(0xffff0000+(c.chan<<8),chan[c.chan].dac.sample);
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}
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}
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|
chan[c.chan].dac.pos=0;
|
|
chan[c.chan].dac.period=0;
|
|
if (c.value!=DIV_NOTE_NULL) {
|
|
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
|
|
chan[c.chan].freqChanged=true;
|
|
chan[c.chan].note=c.value;
|
|
}
|
|
chan[c.chan].active=true;
|
|
chan[c.chan].macroInit(ins);
|
|
if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
|
|
chan[c.chan].outVol=chan[c.chan].vol;
|
|
}
|
|
//chan[c.chan].keyOn=true;
|
|
chan[c.chan].dac.furnaceDAC=true;
|
|
} else {
|
|
if (c.value!=DIV_NOTE_NULL) {
|
|
chan[c.chan].note=c.value;
|
|
}
|
|
chan[c.chan].dac.sample=12*sampleBank+chan[c.chan].note%12;
|
|
if (chan[c.chan].dac.sample>=parent->song.sampleLen) {
|
|
chan[c.chan].dac.sample=-1;
|
|
if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
|
|
break;
|
|
} else {
|
|
if (dumpWrites) addWrite(0xffff0000+(c.chan<<8),chan[c.chan].dac.sample);
|
|
}
|
|
chan[c.chan].dac.pos=0;
|
|
chan[c.chan].dac.period=0;
|
|
chan[c.chan].dac.rate=parent->getSample(chan[c.chan].dac.sample)->rate*4096;
|
|
if (dumpWrites) {
|
|
rWrite(0x08+c.chan,0);
|
|
addWrite(0xffff0001+(c.chan<<8),chan[c.chan].dac.rate);
|
|
}
|
|
chan[c.chan].dac.furnaceDAC=false;
|
|
}
|
|
chan[c.chan].curPSGMode.dac=chan[c.chan].nextPSGMode.dac;
|
|
break;
|
|
}
|
|
if (c.value!=DIV_NOTE_NULL) {
|
|
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
|
|
chan[c.chan].freqChanged=true;
|
|
chan[c.chan].note=c.value;
|
|
}
|
|
chan[c.chan].active=true;
|
|
chan[c.chan].keyOn=true;
|
|
chan[c.chan].macroInit(ins);
|
|
if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
|
|
chan[c.chan].outVol=chan[c.chan].vol;
|
|
}
|
|
if (!chan[c.chan].nextPSGMode.dac) {
|
|
if (isMuted[c.chan]) {
|
|
rWrite(0x08+c.chan,0);
|
|
} else {
|
|
rWrite(0x08+c.chan,(chan[c.chan].vol&31)|((chan[c.chan].nextPSGMode.getEnvelope())<<3));
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case DIV_CMD_NOTE_OFF:
|
|
chan[c.chan].dac.sample=-1;
|
|
if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
|
|
chan[c.chan].nextPSGMode.dac=false;
|
|
chan[c.chan].keyOff=true;
|
|
chan[c.chan].active=false;
|
|
chan[c.chan].macroInit(NULL);
|
|
break;
|
|
case DIV_CMD_NOTE_OFF_ENV:
|
|
case DIV_CMD_ENV_RELEASE:
|
|
chan[c.chan].std.release();
|
|
break;
|
|
case DIV_CMD_VOLUME: {
|
|
chan[c.chan].vol=c.value;
|
|
if (!chan[c.chan].std.vol.has) {
|
|
chan[c.chan].outVol=c.value;
|
|
}
|
|
if (!chan[c.chan].nextPSGMode.dac) {
|
|
if (isMuted[c.chan]) {
|
|
rWrite(0x08+c.chan,0);
|
|
} else {
|
|
if (chan[c.chan].active) rWrite(0x08+c.chan,(chan[c.chan].vol&31)|((chan[c.chan].nextPSGMode.getEnvelope())<<3));
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case DIV_CMD_GET_VOLUME: {
|
|
return chan[c.chan].vol;
|
|
break;
|
|
}
|
|
case DIV_CMD_INSTRUMENT:
|
|
if (chan[c.chan].ins!=c.value || c.value2==1) {
|
|
chan[c.chan].insChanged=true;
|
|
}
|
|
chan[c.chan].ins=c.value;
|
|
break;
|
|
case DIV_CMD_PITCH: {
|
|
chan[c.chan].pitch=c.value;
|
|
chan[c.chan].freqChanged=true;
|
|
break;
|
|
}
|
|
case DIV_CMD_NOTE_PORTA: {
|
|
int destFreq=NOTE_PERIODIC(c.value2);
|
|
bool return2=false;
|
|
if (destFreq>chan[c.chan].baseFreq) {
|
|
chan[c.chan].baseFreq+=c.value;
|
|
if (chan[c.chan].baseFreq>=destFreq) {
|
|
chan[c.chan].baseFreq=destFreq;
|
|
return2=true;
|
|
}
|
|
} else {
|
|
chan[c.chan].baseFreq-=c.value;
|
|
if (chan[c.chan].baseFreq<=destFreq) {
|
|
chan[c.chan].baseFreq=destFreq;
|
|
return2=true;
|
|
}
|
|
}
|
|
chan[c.chan].freqChanged=true;
|
|
if (return2) {
|
|
chan[c.chan].inPorta=false;
|
|
return 2;
|
|
}
|
|
break;
|
|
}
|
|
case DIV_CMD_LEGATO: {
|
|
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
|
|
chan[c.chan].freqChanged=true;
|
|
break;
|
|
}
|
|
case DIV_CMD_STD_NOISE_MODE:
|
|
if (c.value<0x10) {
|
|
if (!chan[c.chan].nextPSGMode.dac) {
|
|
chan[c.chan].nextPSGMode.val=(c.value+1)&7;
|
|
if (chan[c.chan].active) {
|
|
chan[c.chan].curPSGMode.val=chan[c.chan].nextPSGMode.val;
|
|
}
|
|
if (isMuted[c.chan]) {
|
|
rWrite(0x08+c.chan,0);
|
|
} else if (chan[c.chan].active) {
|
|
rWrite(0x08+c.chan,(chan[c.chan].outVol&31)|((chan[c.chan].nextPSGMode.getEnvelope())<<3));
|
|
}
|
|
}
|
|
} else {
|
|
chan[c.chan].duty=c.value&15;
|
|
immWrite(0x16+c.chan,chan[c.chan].duty);
|
|
}
|
|
break;
|
|
case DIV_CMD_STD_NOISE_FREQ:
|
|
rWrite(0x06,c.value);
|
|
break;
|
|
case DIV_CMD_AY_ENVELOPE_SET:
|
|
chan[c.chan].envelope.mode=c.value>>4;
|
|
rWrite(regMode[c.chan],chan[c.chan].envelope.mode);
|
|
if (c.value&15) {
|
|
chan[c.chan].nextPSGMode.envelope|=1;
|
|
} else {
|
|
chan[c.chan].nextPSGMode.envelope&=~1;
|
|
}
|
|
if (!chan[c.chan].nextPSGMode.dac && chan[c.chan].active) {
|
|
chan[c.chan].curPSGMode.val=chan[c.chan].nextPSGMode.val;
|
|
}
|
|
if (isMuted[c.chan]) {
|
|
rWrite(0x08+c.chan,0);
|
|
} else {
|
|
rWrite(0x08+c.chan,(chan[c.chan].vol&31)|((chan[c.chan].nextPSGMode.getEnvelope())<<3));
|
|
}
|
|
break;
|
|
case DIV_CMD_AY_ENVELOPE_LOW:
|
|
chan[c.chan].envelope.period&=0xff00;
|
|
chan[c.chan].envelope.period|=c.value;
|
|
immWrite(regPeriodL[c.chan],chan[c.chan].envelope.period);
|
|
immWrite(regPeriodH[c.chan],chan[c.chan].envelope.period>>8);
|
|
break;
|
|
case DIV_CMD_AY_ENVELOPE_HIGH:
|
|
chan[c.chan].envelope.period&=0xff;
|
|
chan[c.chan].envelope.period|=c.value<<8;
|
|
immWrite(regPeriodL[c.chan],chan[c.chan].envelope.period);
|
|
immWrite(regPeriodH[c.chan],chan[c.chan].envelope.period>>8);
|
|
break;
|
|
case DIV_CMD_AY_ENVELOPE_SLIDE:
|
|
chan[c.chan].envelope.slide=c.value;
|
|
break;
|
|
case DIV_CMD_AY_NOISE_MASK_AND:
|
|
ayNoiseAnd=c.value;
|
|
immWrite(0x19,ayNoiseAnd);
|
|
break;
|
|
case DIV_CMD_AY_NOISE_MASK_OR:
|
|
ayNoiseOr=c.value;
|
|
immWrite(0x1a,ayNoiseOr);
|
|
break;
|
|
case DIV_CMD_AY_AUTO_ENVELOPE:
|
|
chan[c.chan].autoEnvNum=c.value>>4;
|
|
chan[c.chan].autoEnvDen=c.value&15;
|
|
chan[c.chan].freqChanged=true;
|
|
break;
|
|
case DIV_CMD_AY_IO_WRITE:
|
|
if (c.value==255) {
|
|
immWrite(0x1f,c.value2);
|
|
break;
|
|
}
|
|
if (c.value) { // port B
|
|
ioPortB=true;
|
|
portBVal=c.value2;
|
|
logI("AY I/O port B write: %x",portBVal);
|
|
} else { // port A
|
|
ioPortA=true;
|
|
portAVal=c.value2;
|
|
logI("AY I/O port A write: %x",portAVal);
|
|
}
|
|
updateOutSel(true);
|
|
immWrite(14+(c.value?1:0),(c.value?portBVal:portAVal));
|
|
break;
|
|
case DIV_CMD_SAMPLE_MODE:
|
|
chan[c.chan].nextPSGMode.dac=(c.value>0)?1:0;
|
|
chan[c.chan].curPSGMode.dac=chan[c.chan].nextPSGMode.dac;
|
|
break;
|
|
case DIV_CMD_SAMPLE_BANK:
|
|
sampleBank=c.value;
|
|
if (sampleBank>(parent->song.sample.size()/12)) {
|
|
sampleBank=parent->song.sample.size()/12;
|
|
}
|
|
break;
|
|
case DIV_CMD_MACRO_OFF:
|
|
chan[c.chan].std.mask(c.value,true);
|
|
break;
|
|
case DIV_CMD_MACRO_ON:
|
|
chan[c.chan].std.mask(c.value,false);
|
|
break;
|
|
case DIV_ALWAYS_SET_VOLUME:
|
|
return 0;
|
|
break;
|
|
case DIV_CMD_GET_VOLMAX:
|
|
return 31;
|
|
break;
|
|
case DIV_CMD_PRE_PORTA:
|
|
if (chan[c.chan].active && c.value2) {
|
|
if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AY8930));
|
|
}
|
|
if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
|
|
chan[c.chan].inPorta=c.value;
|
|
break;
|
|
case DIV_CMD_PRE_NOTE:
|
|
break;
|
|
default:
|
|
//printf("WARNING: unimplemented command %d\n",c.cmd);
|
|
break;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
void DivPlatformAY8930::muteChannel(int ch, bool mute) {
|
|
isMuted[ch]=mute;
|
|
if (isMuted[ch]) {
|
|
rWrite(0x08+ch,0);
|
|
} else if (chan[ch].active) {
|
|
if (chan[ch].nextPSGMode.dac) {
|
|
rWrite(0x08+ch,chan[ch].dac.out&31);
|
|
} else {
|
|
rWrite(0x08+ch,(chan[ch].outVol&31)|((chan[ch].nextPSGMode.getEnvelope())<<3));
|
|
}
|
|
}
|
|
}
|
|
|
|
void DivPlatformAY8930::forceIns() {
|
|
for (int i=0; i<3; i++) {
|
|
chan[i].insChanged=true;
|
|
immWrite(regPeriodL[i],chan[i].envelope.period);
|
|
immWrite(regPeriodH[i],chan[i].envelope.period>>8);
|
|
immWrite(regMode[i],chan[i].envelope.mode);
|
|
}
|
|
}
|
|
|
|
void* DivPlatformAY8930::getChanState(int ch) {
|
|
return &chan[ch];
|
|
}
|
|
|
|
DivMacroInt* DivPlatformAY8930::getChanMacroInt(int ch) {
|
|
return &chan[ch].std;
|
|
}
|
|
|
|
DivSamplePos DivPlatformAY8930::getSamplePos(int ch) {
|
|
if (ch>=3) return DivSamplePos();
|
|
return DivSamplePos(
|
|
chan[ch].dac.sample,
|
|
chan[ch].dac.pos,
|
|
chan[ch].dac.rate
|
|
);
|
|
}
|
|
|
|
DivDispatchOscBuffer* DivPlatformAY8930::getOscBuffer(int ch) {
|
|
return oscBuf[ch];
|
|
}
|
|
|
|
unsigned char* DivPlatformAY8930::getRegisterPool() {
|
|
return regPool;
|
|
}
|
|
|
|
int DivPlatformAY8930::getRegisterPoolSize() {
|
|
return 32;
|
|
}
|
|
|
|
void DivPlatformAY8930::reset() {
|
|
while (!writes.empty()) writes.pop();
|
|
ay->device_reset();
|
|
memset(regPool,0,32);
|
|
for (int i=0; i<3; i++) {
|
|
chan[i]=DivPlatformAY8930::Channel();
|
|
chan[i].std.setEngine(parent);
|
|
chan[i].vol=31;
|
|
chan[i].envelope.period=0;
|
|
chan[i].envelope.mode=0;
|
|
chan[i].envelope.slide=0;
|
|
chan[i].envelope.slideLow=0;
|
|
}
|
|
if (dumpWrites) {
|
|
addWrite(0xffffffff,0);
|
|
}
|
|
|
|
for (int i=0; i<32; i++) {
|
|
oldWrites[i]=-1;
|
|
pendingWrites[i]=-1;
|
|
}
|
|
|
|
sampleBank=0;
|
|
ayNoiseAnd=2;
|
|
ayNoiseOr=0;
|
|
delay=0;
|
|
|
|
extMode=false;
|
|
bank=false;
|
|
|
|
ioPortA=false;
|
|
ioPortB=false;
|
|
portAVal=0;
|
|
portBVal=0;
|
|
|
|
immWrite(0x0d,0xa0);
|
|
immWrite(0x19,2); // and mask
|
|
immWrite(0x1a,0x00); // or mask
|
|
}
|
|
|
|
int DivPlatformAY8930::getOutputCount() {
|
|
return 2;
|
|
}
|
|
|
|
bool DivPlatformAY8930::keyOffAffectsArp(int ch) {
|
|
return true;
|
|
}
|
|
|
|
void DivPlatformAY8930::notifyInsDeletion(void* ins) {
|
|
for (int i=0; i<3; i++) {
|
|
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
|
|
}
|
|
}
|
|
|
|
void DivPlatformAY8930::poke(unsigned int addr, unsigned short val) {
|
|
immWrite(addr,val);
|
|
}
|
|
|
|
void DivPlatformAY8930::poke(std::vector<DivRegWrite>& wlist) {
|
|
for (DivRegWrite& i: wlist) immWrite(i.addr,i.val);
|
|
}
|
|
|
|
void DivPlatformAY8930::setFlags(const DivConfig& flags) {
|
|
clockSel=flags.getBool("halfClock",false);
|
|
switch (flags.getInt("clockSel",0)) {
|
|
case 1:
|
|
chipClock=COLOR_PAL*2.0/5.0;
|
|
break;
|
|
case 2:
|
|
chipClock=1750000;
|
|
break;
|
|
case 3:
|
|
chipClock=2000000;
|
|
break;
|
|
case 4:
|
|
chipClock=1500000;
|
|
break;
|
|
case 5:
|
|
chipClock=1000000;
|
|
break;
|
|
case 6:
|
|
chipClock=COLOR_NTSC/4.0;
|
|
break;
|
|
case 7:
|
|
chipClock=COLOR_PAL*3.0/8.0;
|
|
break;
|
|
case 8:
|
|
chipClock=COLOR_PAL*3.0/16.0;
|
|
break;
|
|
case 9:
|
|
chipClock=COLOR_PAL/4.0;
|
|
break;
|
|
case 10:
|
|
chipClock=2097152;
|
|
break;
|
|
case 11:
|
|
chipClock=COLOR_NTSC;
|
|
break;
|
|
case 12:
|
|
chipClock=3600000;
|
|
break;
|
|
case 13:
|
|
chipClock=20000000/16;
|
|
break;
|
|
case 14:
|
|
chipClock=1536000;
|
|
break;
|
|
default:
|
|
chipClock=COLOR_NTSC/2.0;
|
|
break;
|
|
}
|
|
CHECK_CUSTOM_CLOCK;
|
|
rate=chipClock/4;
|
|
for (int i=0; i<3; i++) {
|
|
oscBuf[i]->rate=rate;
|
|
}
|
|
|
|
stereo=flags.getBool("stereo",false);
|
|
stereoSep=flags.getInt("stereoSep",0)&255;
|
|
}
|
|
|
|
int DivPlatformAY8930::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
|
|
parent=p;
|
|
dumpWrites=false;
|
|
skipRegisterWrites=false;
|
|
for (int i=0; i<3; i++) {
|
|
isMuted[i]=false;
|
|
oscBuf[i]=new DivDispatchOscBuffer;
|
|
}
|
|
setFlags(flags);
|
|
ay=new ay8930_device(rate,clockSel);
|
|
ay->device_start();
|
|
ayBufLen=65536;
|
|
for (int i=0; i<3; i++) ayBuf[i]=new short[ayBufLen];
|
|
reset();
|
|
return 3;
|
|
}
|
|
|
|
void DivPlatformAY8930::quit() {
|
|
for (int i=0; i<3; i++) {
|
|
delete oscBuf[i];
|
|
delete[] ayBuf[i];
|
|
}
|
|
delete ay;
|
|
}
|