otomatalabs/furnace
7
0
Fork 0
Code Issues Pull requests Actions Packages Projects Releases Wiki Activity

MSM6258: start work - DO NOT USE!

Browse source
This commit is contained in:
tildearrow 2022-05-23 19:01:10 -05:00
parent b849b5283b
commit 8ea60f37c5
6 changed files with 486 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
CMakeLists.txt
View file

@ -398,6 +398,7 @@ src/engine/platform/fds.cpp
src/engine/platform/tia.cpp
src/engine/platform/saa.cpp
src/engine/platform/amiga.cpp
src/engine/platform/msm6258.cpp
src/engine/platform/msm6295.cpp
src/engine/platform/pcspkr.cpp
src/engine/platform/segapcm.cpp

4
src/engine/dispatchContainer.cpp
View file

@ -21,6 +21,7 @@
#include "engine.h"
#include "platform/genesis.h"
#include "platform/genesisext.h"
#include "platform/msm6258.h"
#include "platform/msm6295.h"
#include "platform/namcowsg.h"
#include "platform/sms.h"
@ -365,6 +366,9 @@ void DivDispatchContainer::init(DivSystem sys, DivEngine* eng, int chanCount, do
case DIV_SYSTEM_SOUND_UNIT:
dispatch=new DivPlatformSoundUnit;
break;
case DIV_SYSTEM_MSM6258:
dispatch=new DivPlatformMSM6258;
break;
case DIV_SYSTEM_MSM6295:
dispatch=new DivPlatformMSM6295;
break;

334
src/engine/platform/msm6258.cpp Normal file
View file

@ -0,0 +1,334 @@
/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2022 tildearrow and contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "msm6258.h"
#include "../engine.h"
#include "../../ta-log.h"
#include "sound/oki/okim6258.h"
#include <string.h>
#include <math.h>
#define rWrite(v) if (!skipRegisterWrites) {writes.emplace(0,v); if (dumpWrites) {addWrite(0,v);} }
const char** DivPlatformMSM6258::getRegisterSheet() {
return NULL;
}
const char* DivPlatformMSM6258::getEffectName(unsigned char effect) {
return NULL;
}
void DivPlatformMSM6258::acquire(short* bufL, short* bufR, size_t start, size_t len) {
for (size_t h=start; h<start+len; h++) {
short* outs[2]={
&bufL[h],
NULL
};
if (delay<=0) {
if (!writes.empty()) {
//QueuedWrite& w=writes.front();
//msm->command_w(w.val);
writes.pop();
delay=32;
}
} else {
delay--;
}
msm->sound_stream_update(outs,1);
bufL[h]=msm->data_w(0)?32767:0;
/*if (++updateOsc>=22) {
updateOsc=0;
// TODO: per-channel osc
for (int i=0; i<1; i++) {
oscBuf[i]->data[oscBuf[i]->needle++]=msm->m_voice[i].m_muted?0:(msm->m_voice[i].m_out<<6);
}
}*/
}
}
void DivPlatformMSM6258::tick(bool sysTick) {
// nothing
}
int DivPlatformMSM6258::dispatch(DivCommand c) {
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_FM);
if (ins->type==DIV_INS_AMIGA) {
chan[c.chan].furnacePCM=true;
} else {
chan[c.chan].furnacePCM=false;
}
if (skipRegisterWrites) break;
if (chan[c.chan].furnacePCM) {
chan[c.chan].macroInit(ins);
if (!chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;
}
chan[c.chan].sample=ins->amiga.getSample(c.value);
if (chan[c.chan].sample>=0 && chan[c.chan].sample<parent->song.sampleLen) {
//DivSample* s=parent->getSample(chan[c.chan].sample);
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].note=c.value;
chan[c.chan].freqChanged=true;
}
chan[c.chan].active=true;
chan[c.chan].keyOn=true;
msm->ctrl_w(1);
msm->ctrl_w(2);
//rWrite((8<<c.chan)); // turn off
//rWrite(0x80|chan[c.chan].sample); // set phrase
//rWrite((16<<c.chan)|(8-chan[c.chan].outVol)); // turn on
} else {
break;
}
} else {
chan[c.chan].sample=-1;
chan[c.chan].macroInit(NULL);
chan[c.chan].outVol=chan[c.chan].vol;
if ((12*sampleBank+c.value%12)>=parent->song.sampleLen) {
break;
}
//DivSample* s=parent->getSample(12*sampleBank+c.value%12);
chan[c.chan].sample=12*sampleBank+c.value%12;
//rWrite((8<<c.chan)); // turn off
//rWrite(0x80|chan[c.chan].sample); // set phrase
//rWrite((16<<c.chan)|(8-chan[c.chan].outVol)); // turn on
msm->ctrl_w(1);
msm->ctrl_w(2);
}
break;
}
case DIV_CMD_NOTE_OFF:
chan[c.chan].keyOff=true;
chan[c.chan].keyOn=false;
chan[c.chan].active=false;
//rWrite((8<<c.chan)); // turn off
chan[c.chan].macroInit(NULL);
break;
case DIV_CMD_NOTE_OFF_ENV:
chan[c.chan].keyOff=true;
chan[c.chan].keyOn=false;
chan[c.chan].active=false;
//rWrite((8<<c.chan)); // turn off
chan[c.chan].std.release();
break;
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;
}
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: {
break;
}
case DIV_CMD_NOTE_PORTA: {
return 2;
}
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_LEGATO: {
break;
}
case DIV_ALWAYS_SET_VOLUME:
return 0;
break;
case DIV_CMD_GET_VOLMAX:
return 8;
break;
case DIV_CMD_PRE_PORTA:
break;
case DIV_CMD_PRE_NOTE:
break;
default:
//printf("WARNING: unimplemented command %d\n",c.cmd);
break;
}
return 1;
}
void DivPlatformMSM6258::muteChannel(int ch, bool mute) {
isMuted[ch]=mute;
}
void DivPlatformMSM6258::forceIns() {
while (!writes.empty()) writes.pop();
for (int i=0; i<1; i++) {
chan[i].insChanged=true;
}
}
void* DivPlatformMSM6258::getChanState(int ch) {
return &chan[ch];
}
DivDispatchOscBuffer* DivPlatformMSM6258::getOscBuffer(int ch) {
return oscBuf[ch];
}
unsigned char* DivPlatformMSM6258::getRegisterPool() {
return NULL;
}
int DivPlatformMSM6258::getRegisterPoolSize() {
return 0;
}
void DivPlatformMSM6258::poke(unsigned int addr, unsigned short val) {
//immWrite(addr,val);
}
void DivPlatformMSM6258::poke(std::vector<DivRegWrite>& wlist) {
//for (DivRegWrite& i: wlist) immWrite(i.addr,i.val);
}
void DivPlatformMSM6258::reset() {
while (!writes.empty()) writes.pop();
msm->device_reset();
if (dumpWrites) {
addWrite(0xffffffff,0);
}
for (int i=0; i<1; i++) {
chan[i]=DivPlatformMSM6258::Channel();
chan[i].std.setEngine(parent);
}
for (int i=0; i<1; i++) {
chan[i].vol=8;
chan[i].outVol=8;
}
sampleBank=0;
delay=0;
}
bool DivPlatformMSM6258::keyOffAffectsArp(int ch) {
return false;
}
void DivPlatformMSM6258::notifyInsChange(int ins) {
for (int i=0; i<1; i++) {
if (chan[i].ins==ins) {
chan[i].insChanged=true;
}
}
}
void DivPlatformMSM6258::notifyInsDeletion(void* ins) {
}
const void* DivPlatformMSM6258::getSampleMem(int index) {
return index == 0 ? adpcmMem : NULL;
}
size_t DivPlatformMSM6258::getSampleMemCapacity(int index) {
return index == 0 ? 262144 : 0;
}
size_t DivPlatformMSM6258::getSampleMemUsage(int index) {
return index == 0 ? adpcmMemLen : 0;
}
void DivPlatformMSM6258::renderSamples() {
memset(adpcmMem,0,getSampleMemCapacity(0));
// sample data
size_t memPos=0;
int sampleCount=parent->song.sampleLen;
if (sampleCount>128) sampleCount=128;
for (int i=0; i<sampleCount; i++) {
DivSample* s=parent->song.sample[i];
int paddedLen=s->lengthVOX;
if (memPos>=getSampleMemCapacity(0)) {
logW("out of ADPCM memory for sample %d!",i);
break;
}
if (memPos+paddedLen>=getSampleMemCapacity(0)) {
memcpy(adpcmMem+memPos,s->dataVOX,getSampleMemCapacity(0)-memPos);
logW("out of ADPCM memory for sample %d!",i);
} else {
memcpy(adpcmMem+memPos,s->dataVOX,paddedLen);
}
s->offVOX=memPos;
memPos+=paddedLen;
}
adpcmMemLen=memPos+256;
}
void DivPlatformMSM6258::setFlags(unsigned int flags) {
if (flags&1) {
chipClock=4096000;
} else {
chipClock=4000000;
}
rate=chipClock/256;
for (int i=0; i<1; i++) {
isMuted[i]=false;
oscBuf[i]->rate=rate/256;
}
}
int DivPlatformMSM6258::init(DivEngine* p, int channels, int sugRate, unsigned int flags) {
parent=p;
adpcmMem=new unsigned char[getSampleMemCapacity(0)];
adpcmMemLen=0;
dumpWrites=false;
skipRegisterWrites=false;
updateOsc=0;
for (int i=0; i<1; i++) {
isMuted[i]=false;
oscBuf[i]=new DivDispatchOscBuffer;
}
msm=new okim6258_device(4000000);
msm->device_start();
setFlags(flags);
reset();
return 4;
}
void DivPlatformMSM6258::quit() {
for (int i=0; i<1; i++) {
delete oscBuf[i];
}
delete msm;
delete[] adpcmMem;
}
DivPlatformMSM6258::~DivPlatformMSM6258() {
}

129
src/engine/platform/msm6258.h Normal file
View file

@ -0,0 +1,129 @@
/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2022 tildearrow and contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef _MSM6258_H
#define _MSM6258_H
#include "../dispatch.h"
#include "../macroInt.h"
#include <queue>
#include "sound/oki/okim6258.h"
class DivPlatformMSM6258: public DivDispatch {
protected:
const unsigned short chanOffs[6]={
0x00, 0x01, 0x02, 0x100, 0x101, 0x102
};
struct Channel {
unsigned char freqH, freqL;
int freq, baseFreq, pitch, pitch2, portaPauseFreq, note, ins;
unsigned char psgMode, autoEnvNum, autoEnvDen;
signed char konCycles;
bool active, insChanged, freqChanged, keyOn, keyOff, portaPause, inPorta, furnacePCM, hardReset;
int vol, outVol;
int sample;
unsigned char pan;
DivMacroInt std;
void macroInit(DivInstrument* which) {
std.init(which);
pitch2=0;
}
Channel():
freqH(0),
freqL(0),
freq(0),
baseFreq(0),
pitch(0),
pitch2(0),
portaPauseFreq(0),
note(0),
ins(-1),
psgMode(1),
autoEnvNum(0),
autoEnvDen(0),
active(false),
insChanged(true),
freqChanged(false),
keyOn(false),
keyOff(false),
portaPause(false),
inPorta(false),
furnacePCM(false),
hardReset(false),
vol(0),
outVol(15),
sample(-1),
pan(3) {}
};
Channel chan[1];
DivDispatchOscBuffer* oscBuf[1];
bool isMuted[1];
struct QueuedWrite {
unsigned short addr;
unsigned char val;
bool addrOrVal;
QueuedWrite(unsigned short a, unsigned char v): addr(a), val(v), addrOrVal(false) {}
};
std::queue<QueuedWrite> writes;
okim6258_device* msm;
unsigned char regPool[512];
unsigned char lastBusy;
unsigned char* adpcmMem;
size_t adpcmMemLen;
unsigned char sampleBank;
int delay, updateOsc;
bool extMode;
short oldWrites[512];
short pendingWrites[512];
friend void putDispatchChan(void*,int,int);
public:
void acquire(short* bufL, short* bufR, size_t start, size_t len);
int dispatch(DivCommand c);
void* getChanState(int chan);
DivDispatchOscBuffer* getOscBuffer(int chan);
unsigned char* getRegisterPool();
int getRegisterPoolSize();
void reset();
void forceIns();
void tick(bool sysTick=true);
void muteChannel(int ch, bool mute);
bool keyOffAffectsArp(int ch);
void notifyInsChange(int ins);
void notifyInsDeletion(void* ins);
void poke(unsigned int addr, unsigned short val);
void poke(std::vector<DivRegWrite>& wlist);
void setFlags(unsigned int flags);
const char** getRegisterSheet();
const char* getEffectName(unsigned char effect);
const void* getSampleMem(int index);
size_t getSampleMemCapacity(int index);
size_t getSampleMemUsage(int index);
void renderSamples();
int init(DivEngine* parent, int channels, int sugRate, unsigned int flags);
void quit();
~DivPlatformMSM6258();
};
#endif

13
src/engine/platform/sound/oki/okim6258.cpp
View file

@ -12,6 +12,7 @@
#include "okim6258.h"
#include <stdio.h>
#include <string.h>
#include <math.h>
@ -113,6 +114,7 @@ void okim6258_device::device_start()
m_signal = -2;
m_step = 0;
m_has_data = false;
}
@ -125,6 +127,7 @@ void okim6258_device::device_reset()
m_signal = -2;
m_step = 0;
m_status = 0;
m_has_data = false;
}
@ -150,6 +153,8 @@ void okim6258_device::sound_stream_update(short** outputs, int len)
nibble_shift ^= 4;
if (nibble_shift==0) m_has_data=false;
buffer[sampindex]=sample;
}
@ -241,10 +246,13 @@ uint8_t okim6258_device::status_r()
okim6258_data_w -- write to the control port of an OKIM6258-compatible chip
***********************************************************************************************/
void okim6258_device::data_w(uint8_t data)
bool okim6258_device::data_w(uint8_t data)
{
if (m_has_data) return false;
m_data_in = data;
m_nibble_shift = 0;
m_has_data = true;
return true;
}
@ -259,6 +267,8 @@ void okim6258_device::ctrl_w(uint8_t data)
if (data & COMMAND_STOP)
{
m_status &= ~(STATUS_PLAYING | STATUS_RECORDING);
m_has_data = false;
printf("stopping\n");
return;
}
@ -272,6 +282,7 @@ void okim6258_device::ctrl_w(uint8_t data)
m_signal = -2;
m_step = 0;
m_nibble_shift = 0;
printf("playing\n");
}
}
else

11
src/engine/platform/sound/oki/okim6258.h
View file

@ -31,19 +31,19 @@ public:
void set_outbits(int outbit) { m_output_bits = outbit; }
uint8_t status_r();
void data_w(uint8_t data);
bool data_w(uint8_t data);
void ctrl_w(uint8_t data);
void set_divider(int val);
int get_vclk();
// device-levels
virtual void device_start();
virtual void device_reset();
virtual void device_clock_changed();
void device_start();
void device_reset();
void device_clock_changed();
// sound stream updates
virtual void sound_stream_update(short** outputs, int len);
void sound_stream_update(short** outputs, int len);
private:
int16_t clock_adpcm(uint8_t nibble);
@ -54,6 +54,7 @@ private:
uint32_t m_divider; /* master clock divider */
uint8_t m_adpcm_type; /* 3/4 bit ADPCM select */
uint8_t m_data_in; /* ADPCM data-in register */
bool m_has_data; /* whether we already have data */
uint8_t m_nibble_shift; /* nibble select */
uint8_t m_output_bits; /* D/A precision is 10-bits but 12-bit data can be