otomatalabs/furnace
8
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

auto merge failed

Browse source
This commit is contained in:
tildearrow 2022-05-20 17:29:29 -05:00
commit 6976e0b75f
14 changed files with 1019 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

14
src/engine/platform/genesis.cpp
View file

@ -1150,14 +1150,12 @@ void DivPlatformGenesis::setYMFM(bool use) {
}
void DivPlatformGenesis::setFlags(unsigned int flags) {
if (flags==3) {
chipClock=COLOR_NTSC*12.0/7.0;
} else if (flags==2) {
chipClock=8000000.0;
} else if (flags==1) {
chipClock=COLOR_PAL*12.0/7.0;
} else {
chipClock=COLOR_NTSC*15.0/7.0;
switch (flags) {
case 1: chipClock=COLOR_PAL*12.0/7.0; break;
case 2: chipClock=8000000.0; break;
case 3: chipClock=COLOR_NTSC*12.0/7.0; break;
case 4: chipClock=COLOR_NTSC*9.0/4.0; break;
default: chipClock=COLOR_NTSC*15.0/7.0; break;
}
ladder=flags&0x80000000;
OPN2_SetChipType(ladder?ym3438_mode_ym2612:0);

434
src/engine/platform/rf5c68.cpp Normal file
View file

@ -0,0 +1,434 @@
/**
* 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 "rf5c68.h"
#include "../engine.h"
#include "../../ta-log.h"
#include <math.h>
#define rWrite(a,v) {if(!skipRegisterWrites) {rf5c68.rf5c68_w(a,v); regPool[a]=v; if(dumpWrites) addWrite(a,v);}}
#define CHIP_FREQBASE 786432
const char* regCheatSheetRF5C68[]={
"Volume", "0",
"Panning", "1",
"FreqL", "2",
"FreqH", "3",
"LoopStartL", "4",
"LoopStartH", "5",
"StartH", "6",
"Control", "7",
"Disable", "8",
NULL
};
const char** DivPlatformRF5C68::getRegisterSheet() {
return regCheatSheetRF5C68;
}
const char* DivPlatformRF5C68::getEffectName(unsigned char effect) {
return NULL;
}
void DivPlatformRF5C68::chWrite(unsigned char ch, unsigned int addr, unsigned char val) {
if (!skipRegisterWrites) {
if (curChan!=ch) {
curChan=ch;
rWrite(7,curChan|0xc0);
}
regPool[16+((ch)<<4)+((addr)&0x0f)]=val;
rWrite(addr,val);
}
}
void DivPlatformRF5C68::acquire(short* bufL, short* bufR, size_t start, size_t len) {
short buf[16][256];
short* chBufPtrs[16]={
buf[0],buf[1],buf[2],buf[3],buf[4],buf[5],buf[6],buf[7],
buf[8],buf[9],buf[10],buf[11],buf[12],buf[13],buf[14],buf[15]
};
size_t pos=start;
while (len > 0) {
size_t blockLen=MIN(len,256);
short* bufPtrs[2]={&bufL[pos],&bufR[pos]};
rf5c68.sound_stream_update(bufPtrs,chBufPtrs,blockLen);
for (int i=0; i<8; i++) {
for (size_t j=0; j<blockLen; j++) {
oscBuf[i]->data[oscBuf[i]->needle++]=buf[i*2][j]+buf[i*2+1][j];
}
}
pos+=blockLen;
len-=blockLen;
}
}
void DivPlatformRF5C68::tick(bool sysTick) {
for (int i=0; i<8; i++) {
chan[i].std.next();
if (chan[i].std.vol.had) {
chan[i].outVol=((chan[i].vol&0xff)*chan[i].std.vol.val)>>6;
chWrite(i,0,chan[i].outVol);
}
if (chan[i].std.arp.had) {
if (!chan[i].inPorta) {
if (chan[i].std.arp.mode) {
chan[i].baseFreq=NOTE_FREQUENCY(chan[i].std.arp.val);
} else {
chan[i].baseFreq=NOTE_FREQUENCY(chan[i].note+chan[i].std.arp.val);
}
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arp.mode && chan[i].std.arp.finished) {
chan[i].baseFreq=NOTE_FREQUENCY(chan[i].note);
chan[i].freqChanged=true;
}
}
if (chan[i].std.pitch.had) {
if (chan[i].std.pitch.mode) {
chan[i].pitch2+=chan[i].std.pitch.val;
CLAMP_VAR(chan[i].pitch2,-2048,2048);
} else {
chan[i].pitch2=chan[i].std.pitch.val;
}
chan[i].freqChanged=true;
}
// panning registers are reversed in this chip
if (chan[i].std.panL.had) {
chan[i].panning&=0xf0;
chan[i].panning|=chan[i].std.panL.val&15;
}
if (chan[i].std.panR.had) {
chan[i].panning&=0x0f;
chan[i].panning|=(chan[i].std.panR.val&15)<<4;
}
if (chan[i].std.panL.had || chan[i].std.panR.had) {
chWrite(i,0x05,isMuted[i]?0:chan[i].panning);
}
if (chan[i].setPos) {
// force keyon
chan[i].keyOn=true;
chan[i].setPos=false;
} else {
chan[i].audPos=0;
}
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
unsigned char keyon=regPool[8]&~(1<<i);
unsigned char keyoff=keyon|(1<<i);
DivSample* s=parent->getSample(chan[i].sample);
double off=(s->centerRate>=1)?((double)s->centerRate/8363.0):1.0;
chan[i].freq=(int)(off*parent->calcFreq(chan[i].baseFreq,chan[i].pitch,false,2,chan[i].pitch2,chipClock,CHIP_FREQBASE));
if (chan[i].freq>65535) chan[i].freq=65535;
if (chan[i].keyOn) {
unsigned int start=s->offRF5C68;
unsigned int loop=start+s->length8;
if (chan[i].audPos>0) {
start=start+MIN(chan[i].audPos,s->length8);
}
if (s->loopStart>=0) {
loop=start+s->loopStart;
}
start=MIN(start,getSampleMemCapacity()-31);
loop=MIN(loop,getSampleMemCapacity()-31);
rWrite(8,keyoff); // force keyoff first
chWrite(i,6,start>>8);
chWrite(i,4,loop&0xff);
chWrite(i,5,loop>>8);
if (!chan[i].std.vol.had) {
chan[i].outVol=chan[i].vol;
chWrite(i,0,chan[i].outVol);
}
rWrite(8,keyon);
chan[i].keyOn=false;
}
if (chan[i].keyOff) {
rWrite(8,keyoff);
chan[i].keyOff=false;
}
if (chan[i].freqChanged) {
chWrite(i,2,chan[i].freq&0xff);
chWrite(i,3,chan[i].freq>>8);
chan[i].freqChanged=false;
}
}
}
}
int DivPlatformRF5C68::dispatch(DivCommand c) {
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA);
chan[c.chan].sample=ins->amiga.getSample(c.value);
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
}
if (chan[c.chan].sample<0 || chan[c.chan].sample>=parent->song.sampleLen) {
chan[c.chan].sample=-1;
}
if (c.value!=DIV_NOTE_NULL) {
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);
break;
}
case DIV_CMD_NOTE_OFF:
chan[c.chan].sample=-1;
chan[c.chan].active=false;
chan[c.chan].keyOff=true;
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_INSTRUMENT:
if (chan[c.chan].ins!=c.value || c.value2==1) {
chan[c.chan].ins=c.value;
}
break;
case DIV_CMD_VOLUME:
if (chan[c.chan].vol!=c.value) {
chan[c.chan].vol=c.value;
if (!chan[c.chan].std.vol.has) {
chan[c.chan].outVol=c.value;
chWrite(c.chan,0,chan[c.chan].outVol);
}
}
break;
case DIV_CMD_GET_VOLUME:
if (chan[c.chan].std.vol.has) {
return chan[c.chan].vol;
}
return chan[c.chan].outVol;
break;
case DIV_CMD_PANNING:
chan[c.chan].panning=(c.value>>4)|(c.value2&0xf0);
chWrite(c.chan,1,isMuted[c.chan]?0:chan[c.chan].panning);
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_FREQUENCY(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_FREQUENCY(c.value+((chan[c.chan].std.arp.will && !chan[c.chan].std.arp.mode)?(chan[c.chan].std.arp.val-12):(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].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
}
chan[c.chan].inPorta=c.value;
break;
case DIV_CMD_SAMPLE_POS:
chan[c.chan].audPos=c.value;
chan[c.chan].setPos=true;
break;
case DIV_CMD_GET_VOLMAX:
return 255;
break;
case DIV_ALWAYS_SET_VOLUME:
return 1;
break;
default:
break;
}
return 1;
}
void DivPlatformRF5C68::muteChannel(int ch, bool mute) {
isMuted[ch]=mute;
chWrite(ch,1,mute?0:chan[ch].panning);
}
void DivPlatformRF5C68::forceIns() {
for (int i=0; i<8; i++) {
chan[i].insChanged=true;
chan[i].freqChanged=true;
chan[i].sample=-1;
}
}
void* DivPlatformRF5C68::getChanState(int ch) {
return &chan[ch];
}
DivDispatchOscBuffer* DivPlatformRF5C68::getOscBuffer(int ch) {
return oscBuf[ch];
}
void DivPlatformRF5C68::reset() {
memset(regPool,0,144);
rf5c68.device_reset();
rWrite(0x08,0xff); // keyoff all channels
for (int i=0; i<8; i++) {
chan[i]=DivPlatformRF5C68::Channel();
chan[i].std.setEngine(parent);
chWrite(i,0,255);
chWrite(i,1,isMuted[i]?0:255);
}
}
bool DivPlatformRF5C68::isStereo() {
return true;
}
void DivPlatformRF5C68::notifyInsChange(int ins) {
for (int i=0; i<8; i++) {
if (chan[i].ins==ins) {
chan[i].insChanged=true;
}
}
}
void DivPlatformRF5C68::notifyWaveChange(int wave) {
// TODO when wavetables are added
// TODO they probably won't be added unless the samples reside in RAM
}
void DivPlatformRF5C68::notifyInsDeletion(void* ins) {
for (int i=0; i<8; i++) {
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
}
}
void DivPlatformRF5C68::setFlags(unsigned int flags) {
switch (flags&0x0f) {
case 1: chipClock=10000000; break;
case 2: chipClock=12500000; break;
default: chipClock=8000000; break;
}
chipType=flags>>4;
rate=chipClock/384;
for (int i=0; i<8; i++) {
oscBuf[i]->rate=rate;
}
rf5c68=(chipType==1)?rf5c164_device():rf5c68_device();
rf5c68.device_start(sampleMem);
}
void DivPlatformRF5C68::poke(unsigned int addr, unsigned short val) {
rWrite(addr&0x0f,val);
}
void DivPlatformRF5C68::poke(std::vector<DivRegWrite>& wlist) {
for (DivRegWrite& i: wlist) rWrite(i.addr&0x0f,i.val);
}
unsigned char* DivPlatformRF5C68::getRegisterPool() {
return regPool;
}
int DivPlatformRF5C68::getRegisterPoolSize() {
return 144;
}
const void* DivPlatformRF5C68::getSampleMem(int index) {
return index == 0 ? sampleMem : NULL;
}
size_t DivPlatformRF5C68::getSampleMemCapacity(int index) {
return index == 0 ? 65536 : 0;
}
size_t DivPlatformRF5C68::getSampleMemUsage(int index) {
return index == 0 ? sampleMemLen : 0;
}
void DivPlatformRF5C68::renderSamples() {
memset(sampleMem,0,getSampleMemCapacity());
size_t memPos=0;
for (int i=0; i<parent->song.sampleLen; i++) {
DivSample* s=parent->song.sample[i];
int length=s->length8;
int actualLength=MIN((int)(getSampleMemCapacity()-memPos)-31,length);
if (actualLength>0) {
s->offRF5C68=memPos;
for (int j=0; j<actualLength; j++) {
// convert to signed magnitude
signed char val=s->data8[j];
CLAMP_VAR(val,-127,126);
sampleMem[memPos++]=(val>0)?(val|0x80):(0-val);
}
// write end of sample marker
memset(&sampleMem[memPos],0xff,31);
memPos+=31;
}
if (actualLength<length) {
logW("out of RF5C68 PCM memory for sample %d!",i);
break;
}
// align memPos to 256-byte boundary
memPos=(memPos+0xff)&~0xff;
}
sampleMemLen=memPos;
}
int DivPlatformRF5C68::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;
oscBuf[i]=new DivDispatchOscBuffer;
}
sampleMem=new unsigned char[getSampleMemCapacity()];
sampleMemLen=0;
setFlags(flags);
reset();
return 8;
}
void DivPlatformRF5C68::quit() {
delete[] sampleMem;
for (int i=0; i<8; i++) {
delete oscBuf[i];
}
}

105
src/engine/platform/rf5c68.h Normal file
View file

@ -0,0 +1,105 @@
/**
* 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 _RF5C68_H
#define _RF5C68_H
#include "../dispatch.h"
#include <queue>
#include "../macroInt.h"
#include "sound/rf5c68.h"
class DivPlatformRF5C68: public DivDispatch {
struct Channel {
int freq, baseFreq, pitch, pitch2;
unsigned int audPos;
int sample, wave, ins;
int note;
int panning;
bool active, insChanged, freqChanged, keyOn, keyOff, inPorta, setPos;
int vol, outVol;
DivMacroInt std;
void macroInit(DivInstrument* which) {
std.init(which);
pitch2=0;
}
Channel():
freq(0),
baseFreq(0),
pitch(0),
pitch2(0),
audPos(0),
sample(-1),
ins(-1),
note(0),
panning(255),
active(false),
insChanged(true),
freqChanged(false),
keyOn(false),
keyOff(false),
inPorta(false),
setPos(false),
vol(255),
outVol(255) {}
};
Channel chan[8];
DivDispatchOscBuffer* oscBuf[8];
bool isMuted[8];
int chipType;
unsigned char curChan;
unsigned char* sampleMem;
size_t sampleMemLen;
rf5c68_device rf5c68;
unsigned char regPool[144];
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 isStereo();
void setChipModel(int type);
void notifyInsChange(int ins);
void notifyWaveChange(int wave);
void notifyInsDeletion(void* ins);
void setFlags(unsigned int flags);
void poke(unsigned int addr, unsigned short val);
void poke(std::vector<DivRegWrite>& wlist);
const char** getRegisterSheet();
const char* getEffectName(unsigned char effect);
const void* getSampleMem(int index = 0);
size_t getSampleMemCapacity(int index = 0);
size_t getSampleMemUsage(int index = 0);
void renderSamples();
int init(DivEngine* parent, int channels, int sugRate, unsigned int flags);
void quit();
private:
void chWrite(unsigned char ch, unsigned int addr, unsigned char val);
};
#endif

255
src/engine/platform/sound/rf5c68.cpp Normal file
View file

@ -0,0 +1,255 @@
// license:BSD-3-Clause
// copyright-holders:Olivier Galibert,Aaron Giles
/*********************************************************/
/* ricoh RF5C68(or clone) PCM controller */
/* */
/* TODO: Verify RF5C105,164 (Sega CD/Mega CD) */
/* differences */
/*********************************************************/
#include "rf5c68.h"
#include <algorithm>
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// rf5c68_device - constructor
//-------------------------------------------------
rf5c68_device::rf5c68_device(int output_bits)
: m_cbank(0)
, m_wbank(0)
, m_enable(0)
, m_output_bits(output_bits)
, m_ext_mem(nullptr)
{
}
rf5c68_device::rf5c68_device()
: rf5c68_device(10)
{
}
//-------------------------------------------------
// rf5c164_device - constructor
//-------------------------------------------------
rf5c164_device::rf5c164_device()
: rf5c68_device(16)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void rf5c68_device::device_start(u8 *ext_mem)
{
m_ext_mem = ext_mem;
}
void rf5c68_device::device_reset()
{
m_cbank = 0;
m_wbank = 0;
m_enable = 0;
for (pcm_channel &chan : m_chan) {
chan.enable = 0;
chan.env = 0;
chan.pan = 0;
chan.start = 0;
chan.addr = 0;
chan.step = 0;
chan.loopst = 0;
}
}
//-------------------------------------------------
// sound_stream_update - handle a stream update
//-------------------------------------------------
void rf5c68_device::sound_stream_update(s16 **outputs, s16 **channel_outputs, u32 samples)
{
/* bail if not enabled */
if (!m_enable)
{
std::fill_n(outputs[0], samples, 0);
std::fill_n(outputs[1], samples, 0);
for (unsigned int i = 0; i < NUM_CHANNELS; i++) {
std::fill_n(channel_outputs[i*2], samples, 0);
std::fill_n(channel_outputs[i*2+1], samples, 0);
}
return;
}
if (m_mixleft.size() < samples)
m_mixleft.resize(samples);
if (m_mixright.size() < samples)
m_mixright.resize(samples);
std::fill_n(&m_mixleft[0], samples, 0);
std::fill_n(&m_mixright[0], samples, 0);
/* loop over channels */
for (unsigned int i = 0; i < NUM_CHANNELS; i++)
{
pcm_channel &chan = m_chan[i];
/* if this channel is active, accumulate samples */
if (chan.enable)
{
int lv = (chan.pan & 0x0f) * chan.env;
int rv = ((chan.pan >> 4) & 0x0f) * chan.env;
/* loop over the sample buffer */
for (u32 j = 0; j < samples; j++)
{
int sample;
/* fetch the sample and handle looping */
sample = m_ext_mem[(chan.addr >> 11) & 0xffff];
if (sample == 0xff)
{
chan.addr = chan.loopst << 11;
sample = m_ext_mem[(chan.addr >> 11) & 0xffff];
/* if we loop to a loop point, we're effectively dead */
if (sample == 0xff)
break;
}
chan.addr += chan.step;
/* add to the buffer */
s32 left_out = ((sample & 0x7f) * lv) >> 5;
s32 right_out = ((sample & 0x7f) * rv) >> 5;
if ((sample & 0x80) == 0)
{
left_out = -left_out;
right_out = -right_out;
}
channel_outputs[i*2][j] = (s16)left_out;
channel_outputs[i*2+1][j] = (s16)right_out;
m_mixleft[j] += left_out;
m_mixright[j] += right_out;
}
}
else
{
std::fill_n(channel_outputs[i*2], samples, 0);
std::fill_n(channel_outputs[i*2+1], samples, 0);
}
}
/*
now clamp and shift the result (output is only 10 bits for RF5C68, 16 bits for RF5C164)
reference: Mega CD hardware manual, RF5C68 datasheet
*/
const u8 output_shift = (m_output_bits > 16) ? 0 : (16 - m_output_bits);
const s32 output_nandmask = (1 << output_shift) - 1;
for (u32 j = 0; j < samples; j++)
{
s32 outleft = std::min(std::max(m_mixleft[j], -32768), 32767);
s32 outright = std::min(std::max(m_mixright[j], -32768), 32767);
outputs[0][j] = outleft & ~output_nandmask;
outputs[1][j] = outright & ~output_nandmask;
}
}
//-------------------------------------------------
// RF5C68 write register
//-------------------------------------------------
// TODO: RF5C164 only?
u8 rf5c68_device::rf5c68_r(offs_t offset)
{
u8 shift;
shift = (offset & 1) ? 11 + 8 : 11;
// printf("%08x\n",(m_chan[(offset & 0x0e) >> 1].addr));
return (m_chan[(offset & 0x0e) >> 1].addr) >> (shift);
}
void rf5c68_device::rf5c68_w(offs_t offset, u8 data)
{
pcm_channel &chan = m_chan[m_cbank];
int i;
/* switch off the address */
switch (offset)
{
case 0x00: /* envelope */
chan.env = data;
break;
case 0x01: /* pan */
chan.pan = data;
break;
case 0x02: /* FDL */
chan.step = (chan.step & 0xff00) | (data & 0x00ff);
break;
case 0x03: /* FDH */
chan.step = (chan.step & 0x00ff) | ((data << 8) & 0xff00);
break;
case 0x04: /* LSL */
chan.loopst = (chan.loopst & 0xff00) | (data & 0x00ff);
break;
case 0x05: /* LSH */
chan.loopst = (chan.loopst & 0x00ff) | ((data << 8) & 0xff00);
break;
case 0x06: /* ST */
chan.start = data;
if (!chan.enable)
chan.addr = chan.start << (8 + 11);
break;
case 0x07: /* control reg */
m_enable = (data >> 7) & 1;
if (data & 0x40)
m_cbank = data & 7;
else
m_wbank = (data & 0xf) << 12;
break;
case 0x08: /* channel on/off reg */
for (i = 0; i < 8; i++)
{
m_chan[i].enable = (~data >> i) & 1;
if (!m_chan[i].enable)
m_chan[i].addr = m_chan[i].start << (8 + 11);
}
break;
}
}
//-------------------------------------------------
// RF5C68 read memory
//-------------------------------------------------
u8 rf5c68_device::rf5c68_mem_r(offs_t offset)
{
return m_ext_mem[m_wbank | offset];
}
//-------------------------------------------------
// RF5C68 write memory
//-------------------------------------------------
void rf5c68_device::rf5c68_mem_w(offs_t offset, u8 data)
{
m_ext_mem[m_wbank | offset] = data;
}

87
src/engine/platform/sound/rf5c68.h Normal file
View file

@ -0,0 +1,87 @@
// license:BSD-3-Clause
// copyright-holders:Olivier Galibert,Aaron Giles
/*********************************************************/
/* ricoh RF5C68(or clone) PCM controller */
/*********************************************************/
#include <vector>
#ifndef MAME_SOUND_RF5C68_H
#define MAME_SOUND_RF5C68_H
#pragma once
namespace rf5c68
{
typedef unsigned char u8;
typedef signed char s8;
typedef unsigned short u16;
typedef signed short s16;
typedef unsigned int u32;
typedef signed int s32;
typedef signed int offs_t;
}
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
#define RF5C68_SAMPLE_END_CB_MEMBER(_name) void _name(int channel)
// ======================> rf5c68_device
using namespace rf5c68;
class rf5c68_device
{
public:
rf5c68_device();
u8 rf5c68_r(offs_t offset);
void rf5c68_w(offs_t offset, u8 data);
u8 rf5c68_mem_r(offs_t offset);
void rf5c68_mem_w(offs_t offset, u8 data);
void device_start(u8 *ext_mem);
void device_reset();
void sound_stream_update(s16 **outputs, s16 **channel_outputs, u32 samples);
protected:
rf5c68_device(int output_bits);
private:
static constexpr unsigned NUM_CHANNELS = 8;
struct pcm_channel
{
pcm_channel() { }
u8 enable;
u8 env;
u8 pan;
u8 start;
u32 addr;
u16 step;
u16 loopst;
};
pcm_channel m_chan[NUM_CHANNELS];
u8 m_cbank;
u16 m_wbank;
u8 m_enable;
int m_output_bits;
std::vector<s32> m_mixleft;
std::vector<s32> m_mixright;
u8 *m_ext_mem;
};
class rf5c164_device : public rf5c68_device
{
public:
rf5c164_device();
};
#endif // MAME_SOUND_RF5C68_H