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bsnes/gb/apu/apu.hpp

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Update to v087r07 release. There was a "v087r07pre" release that I unfortunately missed. byuu says (about v087r07pre): Creates the bsnes/processor folder. This has a shared ARM core there which both the GBA and ST018 inherit. There are going to be separate decoders, and revision-specific checks, to support the differences between v3+. In the future, I also want to move the other processor cores here: - GBZ80 (GB, GBC) - 65816 (SNES CPU, SA-1) - NEC uPD (7725, 96050, maybe 7720 just for fun) - Hitachi HG51B169 - SuperFX - SPC700 - 65(C?)02 Basically, the GBA/ST018 forces my hand to start coding a bit more like a multi-system emulator. Right now, the ST018 is broken. Hence the pre. Apparently the GBA core being used now has some bugs. So this'll be a nice way to stress-test the GBA core a bit before we make it to ARMwrestler. byuu says (about v087r07): Both snes/chip/armdsp and gba/cpu use processor/arm now. Fixed THUMB to execute the BL prefix and suffix separately. I can now get the GBA BIOS stuck in some kind of infinite loop. Hooray ... I guess?
2012-03-23 10:43:39 +00:00
struct APU : Thread, MMIO {
Update to v075r05 release. byuu says: Added Game Boy sound emulation, all four channels. It's really, really, really bad. Plenty of bugs, I don't even know what the fuck a high-pass filter is so that isn't there. Hermite resampling from 4MHz down to 44KHz. But it's tolerable. I don't understand what sweep is for at all, and I'm sure I have that insane recursive reload behavior wrong. This is pretty much my own design. I referenced blargg's gb snd emu, blargg's older gb apu ref, Cydrak's APU core, that lousy gbdev wiki article, the completely and utterly worthless pandocs, and received nothing but bad and wrong information that just wasted my time from But I managed to pull it off. It's also painfully slow, like 250fps on my machine slow. Countless optimizations are possible.
2011-02-02 10:38:28 +00:00
#include "square1/square1.hpp"
#include "square2/square2.hpp"
Update to v075r04 release. byuu says: Changelog: - hooked up everything necessary for Game Boy sound emulation ... - bgameboy and bsnes/SGB input 4MHz frequency, and output 44.1KHz frequency (produces soft static for now, to verify it is working) - rewrote all of gameboy/apu, it now has a 4MHz worker thread, and separate classes/folders for each channel+master, and serializes So it's basically all I can do without actual emulation code or human-readable documentation/example code.
2011-02-02 10:37:31 +00:00
#include "wave/wave.hpp"
#include "noise/noise.hpp"
#include "master/master.hpp"
Update to v074r08 release. byuu says: The nall::function binding for the memory map apparently breaks when the debugger is enabled, as PPU:: becomes PPUdebugger::, etc; and C++ isn't smart enough to upconvert for us. Not sure how I am going to work around that yet ... Changelog: - improved GameBoy::CPU::Halt emulation, fixes Legend of Zelda intro water+world-map scrolling at the same time - added GameBoy::APU skeleton, and hooked up MMIO read/write for all registers - modified nall integer->string functions
2011-01-22 08:15:49 +00:00
Update to v075r05 release. byuu says: Added Game Boy sound emulation, all four channels. It's really, really, really bad. Plenty of bugs, I don't even know what the fuck a high-pass filter is so that isn't there. Hermite resampling from 4MHz down to 44KHz. But it's tolerable. I don't understand what sweep is for at all, and I'm sure I have that insane recursive reload behavior wrong. This is pretty much my own design. I referenced blargg's gb snd emu, blargg's older gb apu ref, Cydrak's APU core, that lousy gbdev wiki article, the completely and utterly worthless pandocs, and received nothing but bad and wrong information that just wasted my time from But I managed to pull it off. It's also painfully slow, like 250fps on my machine slow. Countless optimizations are possible.
2011-02-02 10:38:28 +00:00
uint8 mmio_data[48];
Update to v093r07 release. byuu says: Changelog: - importing a game won't show message box on success - importing a game will select the game that was imported in the list - caveat: GTK+ port doesn't seem to be removing focus from item 0 even though the selection is on item 2 - Game Boy audio reduced in volume by 50% - Game Boy Advance audio reduced in volume by 50% - Game Boy internally mixes audio at 2MHz now - Game Boy Advance's Game Boy audio hardware internally mixes audio at 2MHz now - Game Boy Color doesn't sort sprites by X-coordinate - Game Boy Color allows transparency on BGpriority pixels - caveat: this seems to allow sprites to appear on top of windows - Game Boy Color VRAM DMA transfers 16 bytes in 8 clocks (or 16 clocks in double speed mode) - Game Boy Color VRAM DMA masks low 4-bits of source and destination address - Game Boy Color VRAM DMA only allows reads from ROM or RAM - Game Boy Color VRAM DMA only allows writes to VRAM - fixed a bug in dereferencing a nullptr from pObject::find(), should fix crash when pressing enter key on blank windows - fixed Windows RadioItem selection - Game Boy Advance color emulation code added
2013-12-10 12:12:54 +00:00
uint12 sequencer_base;
Update to v075r06 release. byuu says: Removed the floating-point volume adjustments from the wave channel and the left/right speaker mixers. Also, against my better judgment I'm backing out of left/right computation when they are both turned off. This basically makes non-stereo games run faster, but will make stereo games appear to run slower. I don't like it when end-users experience mystery slowdowns. Anyway, it appears that the audio calculation is really fucking demanding. Knocks FPS from 800 down to 300. I thought it might be libco, so I took it out and it only went up to 305fps o.O There is also some sort of problem with bsnes/Super Game Boy audio. The latency is really great when you first start, but it seems to drift apart over time until it is well over 500ms, and then it either pops or fades back to very low, sub-50ms latency again. The way I handle mixing is that the coprocessor audio samples go into a resampler to the native SNES rate, and fed to an output buffer. SNES audio samples go there untouched. When there is a sample in each, I add them together and average the result (I still don't understand why we divide by two since these are signed integers), and output it immediately. It's just-in-time sampling, so as long as DSP v Coprocessor do not drift very far, it should have very low latency. And I make the CPU sync DSP and Coprocessor once per scanline, which is something like 15 samples or so.
2011-02-03 11:17:35 +00:00
uint3 sequencer_step;
Update to v075r05 release. byuu says: Added Game Boy sound emulation, all four channels. It's really, really, really bad. Plenty of bugs, I don't even know what the fuck a high-pass filter is so that isn't there. Hermite resampling from 4MHz down to 44KHz. But it's tolerable. I don't understand what sweep is for at all, and I'm sure I have that insane recursive reload behavior wrong. This is pretty much my own design. I referenced blargg's gb snd emu, blargg's older gb apu ref, Cydrak's APU core, that lousy gbdev wiki article, the completely and utterly worthless pandocs, and received nothing but bad and wrong information that just wasted my time from But I managed to pull it off. It's also painfully slow, like 250fps on my machine slow. Countless optimizations are possible.
2011-02-02 10:38:28 +00:00
Square1 square1;
Square2 square2;
Update to v075r04 release. byuu says: Changelog: - hooked up everything necessary for Game Boy sound emulation ... - bgameboy and bsnes/SGB input 4MHz frequency, and output 44.1KHz frequency (produces soft static for now, to verify it is working) - rewrote all of gameboy/apu, it now has a 4MHz worker thread, and separate classes/folders for each channel+master, and serializes So it's basically all I can do without actual emulation code or human-readable documentation/example code.
2011-02-02 10:37:31 +00:00
Wave wave;
Noise noise;
Master master;
static void Main();
void main();
Update to v074r08 release. byuu says: The nall::function binding for the memory map apparently breaks when the debugger is enabled, as PPU:: becomes PPUdebugger::, etc; and C++ isn't smart enough to upconvert for us. Not sure how I am going to work around that yet ... Changelog: - improved GameBoy::CPU::Halt emulation, fixes Legend of Zelda intro water+world-map scrolling at the same time - added GameBoy::APU skeleton, and hooked up MMIO read/write for all registers - modified nall integer->string functions
2011-01-22 08:15:49 +00:00
void power();
Update to v075r05 release. byuu says: Added Game Boy sound emulation, all four channels. It's really, really, really bad. Plenty of bugs, I don't even know what the fuck a high-pass filter is so that isn't there. Hermite resampling from 4MHz down to 44KHz. But it's tolerable. I don't understand what sweep is for at all, and I'm sure I have that insane recursive reload behavior wrong. This is pretty much my own design. I referenced blargg's gb snd emu, blargg's older gb apu ref, Cydrak's APU core, that lousy gbdev wiki article, the completely and utterly worthless pandocs, and received nothing but bad and wrong information that just wasted my time from But I managed to pull it off. It's also painfully slow, like 250fps on my machine slow. Countless optimizations are possible.
2011-02-02 10:38:28 +00:00
uint8 mmio_read(uint16 addr);
void mmio_write(uint16 addr, uint8 data);
Update to v074r08 release. byuu says: The nall::function binding for the memory map apparently breaks when the debugger is enabled, as PPU:: becomes PPUdebugger::, etc; and C++ isn't smart enough to upconvert for us. Not sure how I am going to work around that yet ... Changelog: - improved GameBoy::CPU::Halt emulation, fixes Legend of Zelda intro water+world-map scrolling at the same time - added GameBoy::APU skeleton, and hooked up MMIO read/write for all registers - modified nall integer->string functions
2011-01-22 08:15:49 +00:00
void serialize(serializer&);
};
extern APU apu;