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Prepare for TI-99/4A support

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only works on MAME core only for now.
This commit is contained in:
cam900 2022-06-07 12:57:09 +09:00
parent d3a3473f19
commit 3e953f57b3
12 changed files with 53 additions and 16 deletions
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2
src/engine/platform/arcade.h
View file

@ -30,7 +30,7 @@ class DivArcadeInterface: public ymfm::ymfm_interface {
};
class DivPlatformArcade: public DivPlatformOPMBase {
class DivPlatformArcade: public DivPlatformOPM {
protected:
const unsigned short chanOffs[8]={
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07

4
src/engine/platform/fmshared_OPM.h
View file

@ -24,7 +24,7 @@
#define NOTE_LINEAR(x) (((x)<<6)+baseFreqOff+log2(parent->song.tuning/440.0)*12.0*64.0)
class DivPlatformOPMBase: public DivPlatformFMBase {
class DivPlatformOPM: public DivPlatformFMBase {
protected:
const unsigned char ADDR_MULT_DT=0x40;
const unsigned char ADDR_TL=0x60;
@ -41,7 +41,7 @@ class DivPlatformOPMBase: public DivPlatformFMBase {
0x00, 0x08, 0x10, 0x18
};
DivPlatformOPMBase():
DivPlatformOPM():
DivPlatformFMBase() {}
};

2
src/engine/platform/opl.cpp
View file

@ -1723,7 +1723,7 @@ void DivPlatformOPL::setFlags(unsigned int flags) {
chipClock=3000000.0;
break;
case 0x04:
chipClock=31948800/8;
chipClock=38400*13*8; // 31948800/8
break;
case 0x05:
chipClock=3500000.0;

20
src/engine/platform/sms.cpp
View file

@ -472,8 +472,12 @@ void DivPlatformSMS::setFlags(unsigned int flags) {
case 0x0101:
chipClock=2000000;
break;
case 0x0102:
chipClock=COLOR_NTSC/8.0;
break;
}
resetPhase=!(flags&16);
divider=16;
noiseDivider=64;
if (sn!=NULL) delete sn;
switch (flags&0xcc) {
@ -524,8 +528,22 @@ void DivPlatformSMS::setFlags(unsigned int flags) {
noiseDivider=64;
stereo=false;
break;
case 0x80: // TI SN94624
sn=new sn94624_device();
isRealSN=true;
noiseDivider=60;
stereo=false;
divider=2;
break;
case 0x84: // TI SN76494
sn=new sn76494_device();
isRealSN=false; // TODO
noiseDivider=68;
stereo=false;
divider=2;
break;
}
rate=nuked?chipClock/16:chipClock/2;
rate=chipClock/divider;
for (int i=0; i<4; i++) {
oscBuf[i]->rate=rate;
}

1
src/engine/platform/sms.h
View file

@ -63,6 +63,7 @@ class DivPlatformSMS: public DivDispatch {
size_t snBufLen;
unsigned char oldValue;
unsigned char snNoiseMode;
int divider=16;
int noiseDivider=64;
bool updateSNMode;
bool resetPhase;

16
src/engine/platform/sound/sn76496.cpp
View file

@ -171,22 +171,22 @@ sn76496_base_device::sn76496_base_device(
}
sn76496_device::sn76496_device()
: sn76496_base_device(0x10000, 0x04, 0x08, false, false, 8, false, true)
: sn76496_base_device(0x10000, 0x04, 0x08, false, false, 1/*8*/, false, true)
{
}
y2404_device::y2404_device()
: sn76496_base_device(0x10000, 0x04, 0x08, false, false, 8, false, true)
: sn76496_base_device(0x10000, 0x04, 0x08, false, false, 1/*8*/, false, true)
{
}
sn76489_device::sn76489_device()
: sn76496_base_device(0x4000, 0x01, 0x02, true, false, 8, false, true)
: sn76496_base_device(0x4000, 0x01, 0x02, true, false, 1/*8*/, false, true)
{
}
sn76489a_device::sn76489a_device()
: sn76496_base_device(0x10000, 0x04, 0x08, false, false, 8, false, true)
: sn76496_base_device(0x10000, 0x04, 0x08, false, false, 1/*8*/, false, true)
{
}
@ -201,22 +201,22 @@ sn94624_device::sn94624_device()
}
ncr8496_device::ncr8496_device()
: sn76496_base_device(0x8000, 0x02, 0x20, true, false, 8, true, true)
: sn76496_base_device(0x8000, 0x02, 0x20, true, false, 1/*8*/, true, true)
{
}
pssj3_device::pssj3_device()
: sn76496_base_device(0x8000, 0x02, 0x20, false, false, 8, true, true)
: sn76496_base_device(0x8000, 0x02, 0x20, false, false, 1/*8*/, true, true)
{
}
gamegear_device::gamegear_device()
: sn76496_base_device(0x8000, 0x01, 0x08, true, true, 8, false, false)
: sn76496_base_device(0x8000, 0x01, 0x08, true, true, 1/*8*/, false, false)
{
}
segapsg_device::segapsg_device()
: sn76496_base_device(0x8000, 0x01, 0x08, true, false, 8, false, false)
: sn76496_base_device(0x8000, 0x01, 0x08, true, false, 1/*8*/, false, false)
{
}

2
src/engine/platform/tx81z.h
View file

@ -29,7 +29,7 @@ class DivTXInterface: public ymfm::ymfm_interface {
};
class DivPlatformTX81Z: public DivPlatformOPMBase {
class DivPlatformTX81Z: public DivPlatformOPM {
protected:
const unsigned short chanOffs[8]={
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07

2
src/engine/platform/ym2203.cpp
View file

@ -1027,7 +1027,7 @@ void DivPlatformYM2203::setFlags(unsigned int flags) {
chipClock=3000000.0;
break;
case 0x04:
chipClock=31948800/8;
chipClock=38400*13*8; // 31948800/8
break;
case 0x05:
chipClock=3000000.0/2.0;

2
src/engine/platform/ym2608.cpp
View file

@ -1400,7 +1400,7 @@ void DivPlatformYM2608::setFlags(unsigned int flags) {
chipClock=8000000.0;
break;
case 0x01:
chipClock=31948800/4;
chipClock=38400*13*16; // 31948800/4
break;
}
rate=fm->sample_rate(chipClock);

3
src/engine/song.h
View file

@ -244,6 +244,7 @@ struct DivSong {
// - 0003: 1.79MHz (half NTSC)
// - 0100: 3MHz
// - 0101: 2MHz
// - 0102: 447KHz (NTSC / 8)
// - bit 2-3, 6-7: chip type
// - 00: Sega VDP (16-bit noise)
// - 04: real SN76489 (15-bit noise)
@ -253,6 +254,8 @@ struct DivSong {
// - 44: real SN76496 (17-bit noise)
// - 48: NCR 8496 (16-bit noise)
// - 4c: Tandy PSSJ-3 (16-bit noise)
// - 80: real SN94624 (15-bit noise)
// - 84: real SN76494 (17-bit noise)
// - bit 4: disable noise phase reset
// - YM2612/YM3438:
// - bit 0-30: clock rate

6
src/gui/presets.cpp
View file

@ -1211,6 +1211,12 @@ void FurnaceGUI::initSystemPresets() {
0
}
));
cat.systems.push_back(FurnaceGUISysDef(
"TI-99/4A", {
DIV_SYSTEM_SMS, 64, 0, 0x182, // SN94624 447KHz
0
}
));
sysCategories.push_back(cat);
cat=FurnaceGUISysCategory("Arcade systems","INSERT COIN");

9
src/gui/sysConf.cpp
View file

@ -69,6 +69,9 @@ void FurnaceGUI::drawSysConf(int chan, DivSystem type, unsigned int& flags, bool
if (ImGui::RadioButton("2MHz (Sega System 1)",(flags&0xff03)==0x0101)) {
copyOfFlags=(flags&(~0xff03))|0x0101;
}
if (ImGui::RadioButton("447KHz (TI-99/4A)",(flags&0xff03)==0x0102)) {
copyOfFlags=(flags&(~0xff03))|0x0102;
}
ImGui::Text("Chip type:");
if (ImGui::RadioButton("Sega VDP/Master System",(flags&0xcc)==0x00)) {
copyOfFlags=(flags&(~0xcc))|0x00;
@ -94,6 +97,12 @@ void FurnaceGUI::drawSysConf(int chan, DivSystem type, unsigned int& flags, bool
if (ImGui::RadioButton("Tandy PSSJ 3-voice sound",(flags&0xcc)==0x4c)) {
copyOfFlags=(flags&(~0xcc))|0x4c;
}
if (ImGui::RadioButton("TI SN94624",(flags&0xcc)==0x80)) {
copyOfFlags=(flags&(~0xcc))|0x80;
}
if (ImGui::RadioButton("TI SN76494",(flags&0xcc)==0x84)) {
copyOfFlags=(flags&(~0xcc))|0x84;
}
bool noPhaseReset=flags&16;
if (ImGui::Checkbox("Disable noise period change phase reset",&noPhaseReset)) {
copyOfFlags=(flags&(~16))|(noPhaseReset<<4);