mirror of https://github.com/bsnes-emu/bsnes.git
v108.15
Add "No VRAM Blocking" and "Echo Shadow RAM" options: These allow compatibility with very old ROM hacks that only previously ran in ZSNES and earlier Snes9X releases.
This commit is contained in:
parent
03aaaba889
commit
08e5e81609
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@ -29,7 +29,7 @@ using namespace nall;
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namespace Emulator {
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static const string Name = "bsnes";
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static const string Version = "108.14";
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static const string Version = "108.15";
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static const string Author = "byuu";
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static const string License = "GPLv3";
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static const string Website = "https://byuu.org";
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@ -612,7 +612,7 @@ VOICE_CLOCK(V9_V6_V3) { voice_V9(v); voice_V6(v+1); voice_V3(v+2); }
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//// Echo
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// Current echo buffer pointer for left/right channel
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#define ECHO_PTR( ch ) (&m.ram [m.t_echo_ptr + ch * 2])
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#define ECHO_PTR( ch ) (&m.echo [m.t_echo_ptr + ch * 2])
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// Sample in echo history buffer, where 0 is the oldest
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#define ECHO_FIR( i ) (m.echo_hist_pos [i])
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@ -835,9 +835,10 @@ void SPC_DSP::run( int clocks_remain )
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//// Setup
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void SPC_DSP::init( void* ram_64k )
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void SPC_DSP::init( void* ram_64k, void* echo_64k )
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{
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m.ram = (uint8_t*) ram_64k;
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m.echo = (uint8_t*) echo_64k;
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mute_voices( 0 );
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disable_surround( false );
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set_output( 0, 0 );
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@ -862,6 +863,7 @@ void SPC_DSP::init( void* ram_64k )
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void SPC_DSP::soft_reset_common()
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{
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require( m.ram ); // init() must have been called already
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require( m.echo );
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m.noise = 0x4000;
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m.echo_hist_pos = m.echo_hist;
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@ -15,7 +15,7 @@ public:
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// Setup
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// Initializes DSP and has it use the 64K RAM provided
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void init( void* ram_64k );
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void init( void* ram_64k, void* echo_64k );
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// Sets destination for output samples. If out is NULL or out_size is 0,
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// doesn't generate any.
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@ -179,6 +179,7 @@ private:
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// non-emulation state
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uint8_t* ram; // 64K shared RAM between DSP and SMP
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uint8_t* echo; // should point at the same memory as ram; used for older hack compatibility
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int mute_mask;
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sample_t* out;
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sample_t* out_end;
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@ -30,6 +30,12 @@ auto DSP::read(uint8 address) -> uint8 {
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}
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auto DSP::write(uint8 address, uint8 data) -> void {
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if(configuration.hacks.dsp.echoShadow) {
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if(address == 0x6c && (data & 0x20)) {
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memset(echoram, 0x00, 65536);
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}
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}
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spc_dsp.write(address, data);
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}
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@ -42,7 +48,12 @@ auto DSP::power(bool reset) -> void {
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stream = Emulator::audio.createStream(2, system.apuFrequency() / 768.0);
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if(!reset) {
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spc_dsp.init(apuram);
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if(!configuration.hacks.dsp.echoShadow) {
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spc_dsp.init(apuram, apuram);
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} else {
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memset(echoram, 0x00, 65536);
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spc_dsp.init(apuram, echoram);
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}
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spc_dsp.reset();
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spc_dsp.set_output(samplebuffer, 8192);
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} else {
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@ -20,6 +20,9 @@ private:
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bool fastDSP = false;
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SPC_DSP spc_dsp;
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int16 samplebuffer[8192];
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//unserialized:
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uint8 echoram[64 * 1024] = {};
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};
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extern DSP dsp;
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@ -22,12 +22,14 @@ auto Configuration::process(Markup::Node document, bool load) -> void {
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bind(boolean, "Hacks/PPU/Deinterlace", hacks.ppu.deinterlace);
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bind(natural, "Hacks/PPU/RenderCycle", hacks.ppu.renderCycle);
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bind(boolean, "Hacks/PPU/NoSpriteLimit", hacks.ppu.noSpriteLimit);
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bind(boolean, "Hacks/PPU/NoVRAMBlocking", hacks.ppu.noVRAMBlocking);
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bind(natural, "Hacks/PPU/Mode7/Scale", hacks.ppu.mode7.scale);
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bind(boolean, "Hacks/PPU/Mode7/Perspective", hacks.ppu.mode7.perspective);
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bind(boolean, "Hacks/PPU/Mode7/Supersample", hacks.ppu.mode7.supersample);
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bind(boolean, "Hacks/PPU/Mode7/Mosaic", hacks.ppu.mode7.mosaic);
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bind(boolean, "Hacks/DSP/Fast", hacks.dsp.fast);
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bind(boolean, "Hacks/DSP/Cubic", hacks.dsp.cubic);
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bind(boolean, "Hacks/DSP/EchoShadow", hacks.dsp.echoShadow);
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bind(boolean, "Hacks/Coprocessor/DelayedSync", hacks.coprocessor.delayedSync);
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bind(boolean, "Hacks/Coprocessor/PreferHLE", hacks.coprocessor.preferHLE);
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bind(natural, "Hacks/SA1/Overclock", hacks.sa1.overclock);
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@ -33,6 +33,7 @@ struct Configuration {
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bool fast = true;
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bool deinterlace = true;
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bool noSpriteLimit = false;
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bool noVRAMBlocking = false;
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uint renderCycle = 512;
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struct Mode7 {
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uint scale = 1;
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@ -44,6 +45,7 @@ struct Configuration {
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struct DSP {
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bool fast = true;
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bool cubic = false;
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bool echoShadow = false;
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} dsp;
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struct Coprocessor {
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bool delayedSync = true;
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@ -29,7 +29,7 @@ auto PPU::readVRAM() -> uint16 {
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template<bool Byte>
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auto PPU::writeVRAM(uint8 data) -> void {
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if(!io.displayDisable && cpu.vcounter() < vdisp()) return;
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if(!io.displayDisable && cpu.vcounter() < vdisp() && !noVRAMBlocking()) return;
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Line::flush();
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auto address = vramAddress();
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if constexpr(Byte == 0) {
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@ -30,6 +30,7 @@ auto PPU::hdSupersample() const -> bool { return configuration.hacks.ppu.mode7.s
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auto PPU::hdMosaic() const -> bool { return configuration.hacks.ppu.mode7.mosaic; }
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auto PPU::deinterlace() const -> bool { return configuration.hacks.ppu.deinterlace; }
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auto PPU::renderCycle() const -> uint { return configuration.hacks.ppu.renderCycle; }
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auto PPU::noVRAMBlocking() const -> bool { return configuration.hacks.ppu.noVRAMBlocking; }
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#define ppu ppufast
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PPU::PPU() {
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@ -20,6 +20,7 @@ struct PPU : PPUcounter {
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alwaysinline auto hdMosaic() const -> bool;
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alwaysinline auto deinterlace() const -> bool;
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alwaysinline auto renderCycle() const -> uint;
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alwaysinline auto noVRAMBlocking() const -> bool;
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//ppu.cpp
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PPU();
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@ -6,12 +6,14 @@ auto Program::load() -> void {
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emulator->configure("Hacks/PPU/Fast", settings.emulator.hack.ppu.fast);
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emulator->configure("Hacks/PPU/Deinterlace", settings.emulator.hack.ppu.deinterlace);
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emulator->configure("Hacks/PPU/NoSpriteLimit", settings.emulator.hack.ppu.noSpriteLimit);
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emulator->configure("Hacks/PPU/NoVRAMBlocking", settings.emulator.hack.ppu.noVRAMBlocking);
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emulator->configure("Hacks/PPU/Mode7/Scale", settings.emulator.hack.ppu.mode7.scale);
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emulator->configure("Hacks/PPU/Mode7/Perspective", settings.emulator.hack.ppu.mode7.perspective);
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emulator->configure("Hacks/PPU/Mode7/Supersample", settings.emulator.hack.ppu.mode7.supersample);
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emulator->configure("Hacks/PPU/Mode7/Mosaic", settings.emulator.hack.ppu.mode7.mosaic);
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emulator->configure("Hacks/DSP/Fast", settings.emulator.hack.dsp.fast);
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emulator->configure("Hacks/DSP/Cubic", settings.emulator.hack.dsp.cubic);
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emulator->configure("Hacks/DSP/EchoShadow", settings.emulator.hack.dsp.echoShadow);
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emulator->configure("Hacks/Coprocessor/DelayedSync", settings.emulator.hack.coprocessor.delayedSync);
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emulator->configure("Hacks/Coprocessor/PreferHLE", settings.emulator.hack.coprocessor.preferHLE);
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emulator->configure("Hacks/SuperFX/Overclock", settings.emulator.hack.superfx.overclock);
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@ -65,6 +65,15 @@ auto EmulatorSettings::create() -> void {
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noSpriteLimit.setText("No sprite limit").setChecked(settings.emulator.hack.ppu.noSpriteLimit).onToggle([&] {
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settings.emulator.hack.ppu.noSpriteLimit = noSpriteLimit.checked();
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});
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noVRAMBlocking.setText("No VRAM blocking").setToolTip(
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"This option emulates a bug in older releases of ZSNES and Snes9X where VRAM blocking was not emulated.\n"
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"A few older ROM hacks relied on this behavior, and will render graphics incorrectly if not enabled.\n"
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"Not only is this extremely inaccurate to real hardware, it also hurts the speed of the fast PPU.\n"
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"Do not enable this option unless you need to play a game that is incompatible with bsnes otherwise."
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).setChecked(settings.emulator.hack.ppu.noVRAMBlocking).onToggle([&] {
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settings.emulator.hack.ppu.noVRAMBlocking = noVRAMBlocking.checked();
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emulator->configure("Hacks/PPU/NoVRAMBlocking", settings.emulator.hack.ppu.noVRAMBlocking);
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});
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mode7Label.setText("HD Mode 7 (fast PPU only)").setFont(Font().setBold());
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mode7ScaleLabel.setText("Scale:");
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mode7Scale.append(ComboButtonItem().setText( "240p").setProperty("multiplier", 1));
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@ -104,6 +113,14 @@ auto EmulatorSettings::create() -> void {
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settings.emulator.hack.dsp.cubic = cubicInterpolation.checked();
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emulator->configure("Hacks/DSP/Cubic", settings.emulator.hack.dsp.cubic);
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});
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echoShadow.setText("Echo shadow RAM").setToolTip(
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"This option emulates a bug in ZSNES where echo RAM was treated as separate from APU RAM.\n"
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"Many older ROM hacks for Super Mario World relied on this behavior, and will crash without enabling this.\n"
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"It is, however, extremely inaccurate to real hardware and should not be enabled unless required."
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).setChecked(settings.emulator.hack.dsp.echoShadow).onToggle([&] {
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settings.emulator.hack.dsp.echoShadow = echoShadow.checked();
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//not a run-time setting: do not call emulator->configure() here.
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});
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coprocessorLabel.setText("Coprocessors").setFont(Font().setBold());
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coprocessorDelayedSyncOption.setText("Fast mode").setChecked(settings.emulator.hack.coprocessor.delayedSync).onToggle([&] {
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settings.emulator.hack.coprocessor.delayedSync = coprocessorDelayedSyncOption.checked();
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@ -117,12 +117,14 @@ auto Settings::process(bool load) -> void {
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bind(boolean, "Emulator/Hack/PPU/Fast", emulator.hack.ppu.fast);
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bind(boolean, "Emulator/Hack/PPU/Deinterlace", emulator.hack.ppu.deinterlace);
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bind(boolean, "Emulator/Hack/PPU/NoSpriteLimit", emulator.hack.ppu.noSpriteLimit);
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bind(boolean, "Emulator/Hack/PPU/NoVRAMBlocking", emulator.hack.ppu.noVRAMBlocking);
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bind(natural, "Emulator/Hack/PPU/Mode7/Scale", emulator.hack.ppu.mode7.scale);
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bind(boolean, "Emulator/Hack/PPU/Mode7/Perspective", emulator.hack.ppu.mode7.perspective);
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bind(boolean, "Emulator/Hack/PPU/Mode7/Supersample", emulator.hack.ppu.mode7.supersample);
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bind(boolean, "Emulator/Hack/PPU/Mode7/Mosaic", emulator.hack.ppu.mode7.mosaic);
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bind(boolean, "Emulator/Hack/DSP/Fast", emulator.hack.dsp.fast);
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bind(boolean, "Emulator/Hack/DSP/Cubic", emulator.hack.dsp.cubic);
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bind(boolean, "Emulator/Hack/DSP/EchoShadow", emulator.hack.dsp.echoShadow);
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bind(boolean, "Emulator/Hack/Coprocessor/DelayedSync", emulator.hack.coprocessor.delayedSync);
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bind(boolean, "Emulator/Hack/Coprocessor/PreferHLE", emulator.hack.coprocessor.preferHLE);
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bind(natural, "Emulator/Hack/SA1/Overclock", emulator.hack.sa1.overclock);
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@ -103,6 +103,7 @@ struct Settings : Markup::Node {
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bool fast = true;
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bool deinterlace = true;
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bool noSpriteLimit = false;
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bool noVRAMBlocking = false;
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struct Mode7 {
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uint scale = 1;
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bool perspective = true;
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@ -113,6 +114,7 @@ struct Settings : Markup::Node {
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struct DSP {
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bool fast = true;
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bool cubic = false;
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bool echoShadow = false;
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} dsp;
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struct Coprocessor {
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bool delayedSync = true;
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@ -343,6 +345,7 @@ public:
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CheckLabel fastPPU{&ppuLayout, Size{0, 0}};
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CheckLabel deinterlace{&ppuLayout, Size{0, 0}};
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CheckLabel noSpriteLimit{&ppuLayout, Size{0, 0}};
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CheckLabel noVRAMBlocking{&ppuLayout, Size{0, 0}};
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Label mode7Label{this, Size{~0, 0}, 2};
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HorizontalLayout mode7Layout{this, Size{~0, 0}};
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Label mode7ScaleLabel{&mode7Layout, Size{0, 0}};
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@ -354,6 +357,7 @@ public:
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HorizontalLayout dspLayout{this, Size{~0, 0}};
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CheckLabel fastDSP{&dspLayout, Size{0, 0}};
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CheckLabel cubicInterpolation{&dspLayout, Size{0, 0}};
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CheckLabel echoShadow{&dspLayout, Size{0, 0}};
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Label coprocessorLabel{this, Size{~0, 0}, 2};
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HorizontalLayout coprocessorLayout{this, Size{~0, 0}};
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CheckLabel coprocessorDelayedSyncOption{&coprocessorLayout, Size{0, 0}};
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