643 lines
17 KiB
C++
643 lines
17 KiB
C++
/**
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* Furnace Tracker - multi-system chiptune tracker
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* Copyright (C) 2021-2022 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 "n163.h"
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#include "../engine.h"
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#include <math.h>
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#define rRead(a,v) n163->addr_w(a); n163->data_r(v);
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#define rWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
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#define rWriteMask(a,v,m) if (!skipRegisterWrites) {writes.emplace(a,v,m); if (dumpWrites) {addWrite(a,v);} }
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#define chWrite(c,a,v) \
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if (c<=chanMax) { \
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rWrite(0x78-(c<<3)+(a&7),v) \
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}
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#define chWriteMask(c,a,v,m) \
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if (c<=chanMax) { \
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rWriteMask(0x78-(c<<3)+(a&7),v,m) \
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}
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#define CHIP_FREQBASE (15*65536)
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const char* regCheatSheetN163[]={
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"FreqL7", "40",
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"AccL7", "41",
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"FreqM7", "42",
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"AccM7", "43",
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"WavLen_FreqH7", "44",
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"AccH7", "45",
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"WavPos7", "46",
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"Vol7", "47",
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"FreqL6", "48",
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"AccL6", "49",
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"FreqM6", "4A",
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"AccM6", "4B",
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"WavLen_FreqH6", "4C",
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"AccH6", "4D",
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"WavPos6", "4E",
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"Vol6", "4F",
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"FreqL5", "50",
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"AccL5", "51",
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"FreqM5", "52",
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"AccM5", "53",
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"WavLen_FreqH5", "54",
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"AccH5", "55",
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"WavPos5", "56",
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"Vol5", "57",
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"FreqL4", "58",
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"AccL4", "59",
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"FreqM4", "5A",
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"AccM4", "5B",
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"WavLen_FreqH4", "5C",
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"AccH4", "5D",
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"WavPos4", "5E",
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"Vol4", "5F",
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"FreqL3", "60",
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"AccL3", "61",
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"FreqM3", "62",
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"AccM3", "63",
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"WavLen_FreqH3", "64",
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"AccH3", "65",
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"WavPos3", "66",
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"Vol3", "67",
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"FreqL2", "68",
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"AccL2", "69",
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"FreqM2", "6A",
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"AccM2", "6B",
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"WavLen_FreqH2", "6C",
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"AccH2", "6D",
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"WavPos2", "6E",
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"Vol2", "6F",
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"FreqL1", "70",
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"AccL1", "71",
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"FreqM1", "72",
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"AccM1", "73",
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"WavLen_FreqH1", "74",
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"AccH1", "75",
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"WavPos1", "76",
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"Vol1", "77",
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"FreqL0", "78",
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"AccL0", "79",
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"FreqM0", "7A",
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"AccM0", "7B",
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"WavLen_FreqH0", "7C",
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"AccH0", "7D",
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"WavPos0", "7E",
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"ChanMax_Vol0", "7F",
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NULL
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};
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const char** DivPlatformN163::getRegisterSheet() {
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return regCheatSheetN163;
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}
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const char* DivPlatformN163::getEffectName(unsigned char effect) {
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switch (effect) {
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case 0x10:
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return "10xx: Select waveform";
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break;
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case 0x11:
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return "11xx: Set waveform position in RAM (single nibble unit)";
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break;
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case 0x12:
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return "12xx: Set waveform length in RAM (04 to FC, 4 nibble unit)";
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break;
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case 0x13:
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return "130x: Change waveform update mode (0: off, bit 0: update now, bit 1: update when every waveform changes)";
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break;
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case 0x14:
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return "14xx: Select waveform for load to RAM";
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break;
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case 0x15:
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return "15xx: Set waveform position for load to RAM (single nibble unit)";
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break;
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case 0x16:
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return "16xx: Set waveform length for load to RAM (04 to FC, 4 nibble unit)";
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break;
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case 0x17:
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return "170x: Change waveform load mode (0: off, bit 0: load now, bit 1: load when every waveform changes)";
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break;
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case 0x18:
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return "180x: Change channel limits (0 to 7, x + 1)";
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break;
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case 0x20:
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return "20xx: (Global) Select waveform for load to RAM";
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break;
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case 0x21:
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return "21xx: (Global) Set waveform position for load to RAM (single nibble unit)";
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break;
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case 0x22:
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return "22xx: (Global) Set waveform length for load to RAM (04 to FC, 4 nibble unit)";
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break;
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case 0x23:
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return "230x: (Global) Change waveform load mode (0: off, bit 0: load now, bit 1: load when every waveform changes)";
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break;
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}
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return NULL;
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}
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void DivPlatformN163::acquire(short* bufL, short* bufR, size_t start, size_t len) {
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for (size_t i=start; i<start+len; i++) {
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n163->tick();
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int out=(n163->out()<<6)*(chanMax+1); // scale to 16 bit
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if (out>32767) out=32767;
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if (out<-32768) out=-32768;
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bufL[i]=bufR[i]=out;
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// command queue
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while (!writes.empty()) {
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QueuedWrite w=writes.front();
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n163->addr_w(w.addr);
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n163->data_w((n163->data_r()&~w.mask)|(w.val&w.mask));
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writes.pop();
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}
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}
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}
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void DivPlatformN163::updateWave(int wave, int pos, int len) {
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len=MAX(0,MIN(((0x78-(chanMax<<3))<<1)-pos,len)); // avoid conflict with channel register area
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DivWavetable* wt=parent->getWave(wave);
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for (int i=0; i<len; i++) {
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unsigned char addr=(pos+i); // address (nibble each)
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unsigned char mask=(addr&1)?0xf0:0x0f;
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if (wt->max<1 || wt->len<1) {
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rWriteMask(addr>>1,0,mask);
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} else {
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int data=wt->data[i*wt->len/len]*15/wt->max;
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if (data<0) data=0;
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if (data>15) data=15;
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rWriteMask(addr>>1,(addr&1)?(data<<4):(data&0xf),mask);
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}
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}
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}
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void DivPlatformN163::updateWaveCh(int ch) {
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if (ch<=chanMax) {
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updateWave(chan[ch].wave,chan[ch].wavePos,chan[ch].waveLen);
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if (chan[ch].active) {
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chan[ch].volumeChanged=true;
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}
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}
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}
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void DivPlatformN163::tick() {
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for (int i=0; i<=chanMax; i++) {
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chan[i].std.next();
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if (chan[i].std.hadVol) {
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chan[i].outVol=(MIN(15,chan[i].std.vol)*(chan[i].vol&15))/15;
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if (chan[i].outVol<0) chan[i].outVol=0;
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if (chan[i].outVol>15) chan[i].outVol=15;
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if (chan[i].resVol!=chan[i].outVol) {
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chan[i].resVol=chan[i].outVol;
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if (!isMuted[i]) {
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chan[i].volumeChanged=true;
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}
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}
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}
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if (chan[i].std.hadArp) {
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if (!chan[i].inPorta) {
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if (chan[i].std.arpMode) {
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chan[i].baseFreq=NOTE_FREQUENCY(chan[i].std.arp);
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} else {
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chan[i].baseFreq=NOTE_FREQUENCY(chan[i].note+(signed char)chan[i].std.arp);
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}
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}
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chan[i].freqChanged=true;
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} else {
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if (chan[i].std.arpMode && chan[i].std.finishedArp) {
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chan[i].baseFreq=NOTE_FREQUENCY(chan[i].note);
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chan[i].freqChanged=true;
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}
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}
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if (chan[i].std.hadDuty) {
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if (chan[i].wavePos!=chan[i].std.duty) {
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chan[i].wavePos=chan[i].std.duty;
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if (chan[i].waveMode&0x2) {
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chan[i].waveUpdated=true;
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}
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chan[i].waveChanged=true;
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}
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}
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if (chan[i].std.hadWave) {
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if (chan[i].wave!=chan[i].std.wave) {
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chan[i].wave=chan[i].std.wave;
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if (chan[i].waveMode&0x2) {
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chan[i].waveUpdated=true;
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}
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}
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}
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if (chan[i].std.hadEx1) {
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if (chan[i].waveLen!=(chan[i].std.ex1&0xfc)) {
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chan[i].waveLen=chan[i].std.ex1&0xfc;
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if (chan[i].waveMode&0x2) {
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chan[i].waveUpdated=true;
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}
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chan[i].freqChanged=true;
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}
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}
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if (chan[i].std.hadEx2) {
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if ((chan[i].waveMode&0x1)!=(chan[i].std.ex2&0x1)) { // update waveform now
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chan[i].waveMode=(chan[i].waveMode&~0x1)|(chan[i].std.ex2&0x1);
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if (chan[i].waveMode&0x1) { // rising edge
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chan[i].waveUpdated=true;
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chan[i].waveChanged=true;
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}
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}
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if ((chan[i].waveMode&0x2)!=(chan[i].std.ex2&0x2)) { // update when every waveform changed
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chan[i].waveMode=(chan[i].waveMode&~0x2)|(chan[i].std.ex2&0x2);
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if (chan[i].waveMode&0x2) {
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chan[i].waveUpdated=true;
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chan[i].waveChanged=true;
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}
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}
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}
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if (chan[i].std.hadEx3) {
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if (chan[i].loadWave!=chan[i].std.ex3) {
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chan[i].loadWave=chan[i].std.ex3;
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if (chan[i].loadMode&0x2) {
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updateWave(chan[i].loadWave,chan[i].loadPos,chan[i].loadLen&0xfc);
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}
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}
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}
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if (chan[i].std.hadAlg) {
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if (chan[i].loadPos!=chan[i].std.alg) {
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chan[i].loadPos=chan[i].std.alg;
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}
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}
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if (chan[i].std.hadFb) {
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if (chan[i].loadLen!=(chan[i].std.fb&0xfc)) {
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chan[i].loadLen=chan[i].std.fb&0xfc;
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}
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}
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if (chan[i].std.hadFms) {
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if ((chan[i].loadMode&0x1)!=(chan[i].std.fms&0x1)) { // load now
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chan[i].loadMode=(chan[i].loadMode&~0x1)|(chan[i].std.fms&0x1);
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if (chan[i].loadMode&0x1) { // rising edge
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updateWave(chan[i].loadWave,chan[i].loadPos,chan[i].loadLen&0xfc);
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}
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}
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if ((chan[i].loadMode&0x2)!=(chan[i].std.fms&0x2)) { // load when every waveform changes
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chan[i].loadMode=(chan[i].loadMode&~0x2)|(chan[i].std.fms&0x2);
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}
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}
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if (chan[i].volumeChanged) {
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if ((!chan[i].active) || isMuted[i]) {
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chWriteMask(i,0x7,0,0xf);
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} else {
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chWriteMask(i,0x7,chan[i].resVol&0xf,0xf);
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}
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chan[i].volumeChanged=false;
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}
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if (chan[i].waveChanged) {
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chWrite(i,0x6,chan[i].wavePos);
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chan[i].freqChanged=true;
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chan[i].waveChanged=false;
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}
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if (chan[i].waveUpdated) {
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updateWaveCh(i);
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if (!chan[i].keyOff) chan[i].keyOn=true;
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chan[i].waveUpdated=false;
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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].waveLen/16)*(chanMax+1),chan[i].pitch,false,0);
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if (chan[i].freq<0) chan[i].freq=0;
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if (chan[i].freq>0x3ffff) chan[i].freq=0x3ffff;
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if (chan[i].keyOn) {
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if (chan[i].wave<0) {
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chan[i].wave=0;
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if (chan[i].waveMode&0x2) {
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updateWaveCh(i);
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}
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}
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}
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if (chan[i].keyOff && !isMuted[i]) {
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chWriteMask(i,0x07,0,0xf);
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}
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chWrite(i,0x0,chan[i].freq&0xff);
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chWrite(i,0x2,chan[i].freq>>8);
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chWrite(i,0x4,((256-chan[i].waveLen)&0xfc)|((chan[i].freq>>16)&3));
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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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chan[i].freqChanged=false;
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}
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}
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}
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int DivPlatformN163::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);
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if (c.value!=DIV_NOTE_NULL) {
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chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
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chan[c.chan].freqChanged=true;
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chan[c.chan].note=c.value;
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}
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chan[c.chan].active=true;
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chan[c.chan].keyOn=true;
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chan[c.chan].resVol=chan[c.chan].vol;
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if (!isMuted[c.chan]) {
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chan[c.chan].volumeChanged=true;
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}
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chan[c.chan].std.init(ins);
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break;
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}
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case DIV_CMD_NOTE_OFF:
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chan[c.chan].active=false;
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chan[c.chan].keyOff=true;
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chan[c.chan].keyOn=false;
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//chan[c.chan].std.init(NULL);
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break;
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case DIV_CMD_NOTE_OFF_ENV:
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chan[c.chan].active=false;
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chan[c.chan].keyOff=true;
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chan[c.chan].keyOn=false;
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chan[c.chan].std.release();
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break;
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case DIV_CMD_ENV_RELEASE:
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chan[c.chan].std.release();
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break;
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case DIV_CMD_INSTRUMENT:
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if (chan[c.chan].ins!=c.value || c.value2==1) {
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chan[c.chan].insChanged=true;
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chan[c.chan].ins=c.value;
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}
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break;
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case DIV_CMD_VOLUME:
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if (chan[c.chan].vol!=c.value) {
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chan[c.chan].vol=c.value;
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if (!chan[c.chan].std.hasVol) {
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chan[c.chan].outVol=c.value;
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chan[c.chan].resVol=chan[c.chan].outVol;
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if (!isMuted[c.chan]) {
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chan[c.chan].volumeChanged=true;
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}
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}
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}
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break;
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case DIV_CMD_GET_VOLUME:
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return chan[c.chan].vol;
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break;
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case DIV_CMD_PITCH:
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chan[c.chan].pitch=c.value;
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chan[c.chan].freqChanged=true;
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break;
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case DIV_CMD_NOTE_PORTA: {
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int destFreq=NOTE_FREQUENCY(c.value2);
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bool return2=false;
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if (destFreq>chan[c.chan].baseFreq) {
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chan[c.chan].baseFreq+=c.value;
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if (chan[c.chan].baseFreq>=destFreq) {
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chan[c.chan].baseFreq=destFreq;
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return2=true;
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}
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} else {
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chan[c.chan].baseFreq-=c.value;
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if (chan[c.chan].baseFreq<=destFreq) {
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chan[c.chan].baseFreq=destFreq;
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return2=true;
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}
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}
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chan[c.chan].freqChanged=true;
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if (return2) {
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chan[c.chan].inPorta=false;
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return 2;
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}
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break;
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}
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case DIV_CMD_WAVE:
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chan[c.chan].wave=c.value;
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if (chan[c.chan].waveMode&0x2) {
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chan[c.chan].waveUpdated=true;
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}
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chan[c.chan].keyOn=true;
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break;
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case DIV_CMD_N163_WAVE_POSITION:
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chan[c.chan].wavePos=c.value;
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if (chan[c.chan].waveMode&0x2) {
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chan[c.chan].waveUpdated=true;
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}
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chan[c.chan].waveChanged=true;
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break;
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case DIV_CMD_N163_WAVE_LENGTH:
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chan[c.chan].waveLen=c.value&0xfc;
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if (chan[c.chan].waveMode&0x2) {
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chan[c.chan].waveUpdated=true;
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}
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chan[c.chan].freqChanged=true;
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break;
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case DIV_CMD_N163_WAVE_MODE:
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chan[c.chan].waveMode=c.value&0x3;
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if (chan[c.chan].waveMode&0x3) { // update now
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chan[c.chan].waveUpdated=true;
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chan[c.chan].waveChanged=true;
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}
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break;
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case DIV_CMD_N163_WAVE_LOAD:
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|
chan[c.chan].loadWave=c.value;
|
|
if (chan[c.chan].loadMode&0x2) { // load when every waveform changes
|
|
updateWave(chan[c.chan].loadWave,chan[c.chan].loadPos,chan[c.chan].loadLen);
|
|
}
|
|
break;
|
|
case DIV_CMD_N163_WAVE_LOADPOS:
|
|
chan[c.chan].loadPos=c.value;
|
|
break;
|
|
case DIV_CMD_N163_WAVE_LOADLEN:
|
|
chan[c.chan].loadLen=c.value&0xfc;
|
|
break;
|
|
case DIV_CMD_N163_WAVE_LOADMODE:
|
|
chan[c.chan].loadMode=c.value&0x3;
|
|
if (chan[c.chan].loadMode&0x1) { // load now
|
|
updateWave(chan[c.chan].loadWave,chan[c.chan].loadPos,chan[c.chan].loadLen);
|
|
}
|
|
break;
|
|
case DIV_CMD_N163_GLOBAL_WAVE_LOAD:
|
|
loadWave=c.value;
|
|
if (loadMode&0x2) { // load when every waveform changes
|
|
updateWave(loadWave,loadPos,loadLen);
|
|
}
|
|
break;
|
|
case DIV_CMD_N163_GLOBAL_WAVE_LOADPOS:
|
|
loadPos=c.value;
|
|
break;
|
|
case DIV_CMD_N163_GLOBAL_WAVE_LOADLEN:
|
|
loadLen=c.value&0xfc;
|
|
break;
|
|
case DIV_CMD_N163_GLOBAL_WAVE_LOADMODE:
|
|
loadMode=c.value&0x3;
|
|
if (loadMode&0x3) { // load now
|
|
updateWave(loadWave,loadPos,loadLen);
|
|
}
|
|
break;
|
|
case DIV_CMD_N163_CHANNEL_LIMIT:
|
|
if (chanMax!=(c.value&0x7)) {
|
|
chanMax=c.value&0x7;
|
|
rWriteMask(0x7f,chanMax<<4,0x70);
|
|
forceIns();
|
|
}
|
|
break;
|
|
case DIV_CMD_LEGATO:
|
|
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value+((chan[c.chan].std.willArp && !chan[c.chan].std.arpMode)?(chan[c.chan].std.arp):(0)));
|
|
chan[c.chan].freqChanged=true;
|
|
chan[c.chan].note=c.value;
|
|
break;
|
|
case DIV_CMD_PRE_PORTA:
|
|
if (chan[c.chan].active && c.value2) {
|
|
if (parent->song.resetMacroOnPorta) {
|
|
chan[c.chan].std.init(parent->getIns(chan[c.chan].ins));
|
|
chan[c.chan].keyOn=true;
|
|
}
|
|
}
|
|
chan[c.chan].inPorta=c.value;
|
|
break;
|
|
case DIV_CMD_GET_VOLMAX:
|
|
return 15;
|
|
break;
|
|
case DIV_ALWAYS_SET_VOLUME:
|
|
return 1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
void DivPlatformN163::muteChannel(int ch, bool mute) {
|
|
isMuted[ch]=mute;
|
|
chan[ch].volumeChanged=true;
|
|
}
|
|
|
|
void DivPlatformN163::forceIns() {
|
|
for (int i=0; i<=chanMax; i++) {
|
|
chan[i].insChanged=true;
|
|
if (chan[i].active) {
|
|
chan[i].keyOn=true;
|
|
chan[i].freqChanged=true;
|
|
chan[i].volumeChanged=true;
|
|
chan[i].waveChanged=true;
|
|
if (chan[i].waveMode&0x2) {
|
|
chan[i].waveUpdated=true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void DivPlatformN163::notifyWaveChange(int wave) {
|
|
for (int i=0; i<8; i++) {
|
|
if (chan[i].wave==wave) {
|
|
if (chan[i].waveMode&0x2) {
|
|
chan[i].waveUpdated=true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void DivPlatformN163::notifyInsChange(int ins) {
|
|
for (int i=0; i<8; i++) {
|
|
if (chan[i].ins==ins) {
|
|
chan[i].insChanged=true;
|
|
}
|
|
}
|
|
}
|
|
|
|
void DivPlatformN163::notifyInsDeletion(void* ins) {
|
|
for (int i=0; i<8; i++) {
|
|
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
|
|
}
|
|
}
|
|
|
|
void* DivPlatformN163::getChanState(int ch) {
|
|
return &chan[ch];
|
|
}
|
|
|
|
unsigned char* DivPlatformN163::getRegisterPool() {
|
|
for (int i=0; i<128; i++) {
|
|
regPool[i]=n163->reg(i);
|
|
}
|
|
return regPool;
|
|
}
|
|
|
|
int DivPlatformN163::getRegisterPoolSize() {
|
|
return 128;
|
|
}
|
|
|
|
void DivPlatformN163::reset() {
|
|
while (!writes.empty()) writes.pop();
|
|
for (int i=0; i<8; i++) {
|
|
chan[i]=DivPlatformN163::Channel();
|
|
}
|
|
|
|
n163->reset();
|
|
memset(regPool,0,128);
|
|
|
|
n163->set_disable(false);
|
|
rWrite(0x7f,chanMax<<4);
|
|
loadWave=-1;
|
|
loadPos=0;
|
|
loadLen=0;
|
|
loadMode=0;
|
|
}
|
|
|
|
void DivPlatformN163::poke(unsigned int addr, unsigned short val) {
|
|
rWrite(addr,val);
|
|
}
|
|
|
|
void DivPlatformN163::poke(std::vector<DivRegWrite>& wlist) {
|
|
for (DivRegWrite& i: wlist) rWrite(i.addr,i.val);
|
|
}
|
|
|
|
void DivPlatformN163::setFlags(unsigned int flags) {
|
|
switch (flags&0xf) {
|
|
case 0x0: // NTSC
|
|
rate=COLOR_NTSC/2.0;
|
|
break;
|
|
case 0x1: // PAL
|
|
rate=COLOR_PAL*3.0/8.0;
|
|
break;
|
|
case 0x2: // Dendy
|
|
rate=COLOR_PAL*2.0/5.0;
|
|
break;
|
|
}
|
|
chanMax=(flags>>4)&7;
|
|
chipClock=rate;
|
|
rate/=15;
|
|
}
|
|
|
|
int DivPlatformN163::init(DivEngine* p, int channels, int sugRate, unsigned int flags) {
|
|
parent=p;
|
|
dumpWrites=false;
|
|
skipRegisterWrites=false;
|
|
for (int i=0; i<8; i++) {
|
|
isMuted[i]=false;
|
|
}
|
|
n163=new n163_core();
|
|
setFlags(flags);
|
|
|
|
reset();
|
|
|
|
return 8;
|
|
}
|
|
|
|
void DivPlatformN163::quit() {
|
|
delete n163;
|
|
}
|
|
|
|
DivPlatformN163::~DivPlatformN163() {
|
|
}
|