mirror of https://github.com/bsnes-emu/bsnes.git
73 lines
1.5 KiB
C++
73 lines
1.5 KiB
C++
#include <fc/fc.hpp>
|
|
|
|
namespace Famicom {
|
|
|
|
PPU ppu;
|
|
#include "memory.cpp"
|
|
#include "render.cpp"
|
|
#include "serialization.cpp"
|
|
|
|
auto PPU::Enter() -> void {
|
|
while(true) scheduler.synchronize(), ppu.main();
|
|
}
|
|
|
|
auto PPU::main() -> void {
|
|
renderScanline();
|
|
}
|
|
|
|
auto PPU::step(uint clocks) -> void {
|
|
while(clocks--) {
|
|
if(io.ly == 240 && io.lx == 340) io.nmiHold = 1;
|
|
if(io.ly == 241 && io.lx == 0) io.nmiFlag = io.nmiHold;
|
|
if(io.ly == 241 && io.lx == 2) cpu.nmiLine(io.nmiEnable && io.nmiFlag);
|
|
|
|
if(io.ly == 260 && io.lx == 340) io.spriteZeroHit = 0, io.spriteOverflow = 0;
|
|
|
|
if(io.ly == 260 && io.lx == 340) io.nmiHold = 0;
|
|
if(io.ly == 261 && io.lx == 0) io.nmiFlag = io.nmiHold;
|
|
if(io.ly == 261 && io.lx == 2) cpu.nmiLine(io.nmiEnable && io.nmiFlag);
|
|
|
|
Thread::step(4);
|
|
synchronize(cpu);
|
|
|
|
io.lx++;
|
|
}
|
|
}
|
|
|
|
auto PPU::scanline() -> void {
|
|
io.lx = 0;
|
|
if(++io.ly == 262) {
|
|
io.ly = 0;
|
|
frame();
|
|
}
|
|
cartridge.scanline(io.ly);
|
|
}
|
|
|
|
auto PPU::frame() -> void {
|
|
io.field++;
|
|
scheduler.exit(Scheduler::Event::Frame);
|
|
}
|
|
|
|
auto PPU::refresh() -> void {
|
|
Emulator::video.refresh(buffer, 256 * sizeof(uint32), 256, 240);
|
|
}
|
|
|
|
auto PPU::power() -> void {
|
|
}
|
|
|
|
auto PPU::reset() -> void {
|
|
create(PPU::Enter, system.colorburst() * 6.0);
|
|
|
|
memory::fill(&io, sizeof(IO));
|
|
memory::fill(&latch, sizeof(Latches));
|
|
io.vramIncrement = 1;
|
|
|
|
for(auto& n : ciram ) n = 0;
|
|
for(auto& n : cgram ) n = 0;
|
|
for(auto& n : oam ) n = 0;
|
|
|
|
for(auto& n : buffer) n = 0;
|
|
}
|
|
|
|
}
|