mirror of
https://github.com/bsnes-emu/bsnes.git
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29be18ce0c
byuu says:
Changelog:
- ruby: if DirectSoundCreate fails (no sound device present), return
false from init instead of crashing
- nall: improved edge case return values for
(basename,pathname,dirname,...)
- nall: renamed file_system_object class to inode
- nall: varuint_t replaced with VariadicNatural; which contains
.bit,.bits,.byte ala Natural/Integer
- nall: fixed boolean compilation error on Windows
- WS: popa should not restore SP
- GBA: rewrote the CPU/APU cores to use the .bit,.bits functions;
removed registers.cpp from each
Note that the GBA changes are extremely major. This is about five hours
worth of extremely delicate work. Any slight errors could break
emulation in extremely bad ways. Let's hold off on extensive testing
until the next WIP, after I do the same to the PPU.
So far ... endrift's SOUNDCNT_X I/O test is failing, although that code
didn't change, so clearly I messed up SOUNDCNT_H somehow ...
To compile on Windows:
1. change nall/string/platform.hpp line 47 to
return slice(result, 0, 3);
2. change ruby/video.wgl.cpp line 72 to
auto lock(uint32_t*& data, uint& pitch, uint width, uint height) -> bool {
3. add this line to the very top of hiro/windows/header.cpp:
#define boolean FuckYouMicrosoft
108 lines
3.0 KiB
C++
108 lines
3.0 KiB
C++
#include <gba/gba.hpp>
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namespace GameBoyAdvance {
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//Game Boy Player emulation
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#include "serialization.cpp"
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Player player;
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auto Player::power() -> void {
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status.enable = false;
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status.rumble = false;
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status.logoDetected = false;
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status.logoCounter = 0;
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status.packet = 0;
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status.send = 0;
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status.recv = 0;
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}
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auto Player::frame() -> void {
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uint32 hash = Hash::CRC32(ppu.output, 240 * 160 * sizeof(uint32)).value();
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status.logoDetected = (hash == 0x7776eb55);
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if(status.logoDetected) {
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status.enable = true;
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status.logoCounter = (status.logoCounter + 1) % 3;
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status.packet = 0;
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}
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if(!status.enable) return;
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//todo: verify which settings are actually required
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//values were taken from observing GBP-compatible games
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if(!cpu.regs.joybus.settings.sc
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&& !cpu.regs.joybus.settings.sd
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&& !cpu.regs.joybus.settings.si
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&& !cpu.regs.joybus.settings.so
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&& !cpu.regs.joybus.settings.scmode
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&& !cpu.regs.joybus.settings.sdmode
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&& !cpu.regs.joybus.settings.simode
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&& !cpu.regs.joybus.settings.somode
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&& !cpu.regs.joybus.settings.irqenable
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&& !cpu.regs.joybus.settings.mode
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&& !cpu.regs.serial.control.shiftclockselect
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&& !cpu.regs.serial.control.shiftclockfrequency
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&& !cpu.regs.serial.control.transferenablereceive
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&& cpu.regs.serial.control.transferenablesend
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&& cpu.regs.serial.control.startbit
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&& cpu.regs.serial.control.transferlength
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&& cpu.regs.serial.control.irqenable
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) {
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status.packet = (status.packet + 1) % 17;
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switch(status.packet) {
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case 0: status.send = 0x0000494e; break;
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case 1: status.send = 0xb6b1494e; break;
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case 2: status.send = 0xb6b1494e; break;
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case 3: status.send = 0xb6b1544e; break;
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case 4: status.send = 0xabb1544e; break;
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case 5: status.send = 0xabb14e45; break;
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case 6: status.send = 0xb1ba4e45; break;
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case 7: status.send = 0xb1ba4f44; break;
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case 8: status.send = 0xb0bb4f44; break;
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case 9: status.send = 0xb0bb8002; break;
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case 10: status.send = 0x10000010; break;
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case 11: status.send = 0x20000013; break;
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case 12: status.send = 0x30000003; break;
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case 13: status.send = 0x30000003; break;
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case 14: status.send = 0x30000003; break;
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case 15: status.send = 0x30000003; break;
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case 16: status.send = 0x30000003; break;
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}
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cpu.regs.irq.flag |= CPU::Interrupt::Serial;
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}
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}
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auto Player::keyinput() -> maybe<uint16> {
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if(status.logoDetected) {
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switch(status.logoCounter) {
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case 0: return {0x03ff};
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case 1: return {0x03ff};
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case 2: return {0x030f};
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}
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}
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return nothing;
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}
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auto Player::read() -> maybe<uint32> {
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if(status.enable) return status.send;
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return nothing;
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}
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auto Player::write(uint2 addr, uint8 byte) -> void {
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if(!status.enable) return;
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uint shift = addr << 3;
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status.recv &= ~(255 << shift);
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status.recv |= byte << shift;
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if(addr == 3 && status.packet == 15) {
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status.rumble = (status.recv & 0xff) == 0x26; //on = 0x26, off = 0x04
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interface->inputRumble(0, 0, 10, status.rumble);
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}
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}
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}
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