class Gameboy:
def __init__(self, bootrom, rom, skip_bootrom=False):
self.timer = Timer()
self.ppu = PPU()
self.apu = APU()
self.joypad = Joypad()
self.cartridge = Cartridge(rom)
self.mmu = MMU(bootrom, self.cartridge, self.timer, self.ppu, self.apu,
self.joypad)
self.timer.mmu = self.mmu
self.ppu.mmu = self.mmu
self.joypad.mmu = self.mmu
self.cpu = CPU(self.mmu)
self.t_cycles = 0
self.reset(skip_bootrom)
#if skip_bootrom:
# self.ppu.LY = 0x90 # for LY stubbed testing
def reset(self, skip_bootrom=False):
self.cpu.reset(skip_bootrom)
self.mmu.reset(skip_bootrom)
self.timer.reset(skip_bootrom)
self.ppu.reset(skip_bootrom)
self.joypad.reset()
self.cartridge.reset()
def run_frame(self):
while not self.ppu.new_frame:
self.cpu.handle_interrupts()
cycles = self.cpu.tick()
for i in range(cycles // 4):
self.timer.tick()
self.ppu.tick()
self.t_cycles += cycles
self.ppu.new_frame = False
class Nes:
#class ExecutionThread(Thread):
# def __init__(self, nes):
# self.nes = nes
# Thread.__init__(self)
#
# def run(self):
# print "Execution thread started."
# while self.nes.isRunning:
# self.nes.cpu.emulate()
class Options:
CPU_FREQ_NTSC= 1789772.5 #1789772.72727272d
CPU_FREQ_PAL= 1773447.4
def __init__(self):
self.preferredFrameRate= 60,
self.fpsInterval= 500 # Time between updating FPS in ms
self.showDisplay= True
self.emulateSound= False
self.sampleRate= 44100 # Sound sample rate in hz
def __init__(self):
self.cpu = CPU(self)
self.ppu = PPU(self)
self.papu = PAPU(self)
self.keyboard = Keyboard(self)
self.rom = None
self.romFile = None
self.mmap = None
self.isRunning = False
self.limitFrames = True
self.fpsFrameCount = 0
self.opts = Nes.Options()
self.frameTime = self.opts.preferredFrameRate
#self.executionThread = Nes.ExecutionThread(self)
def reset(self):
if self.mmap:
self.mmap.reset()
self.cpu.reset()
self.ppu.reset()
self.papu.reset()
def start(self):
if (self.rom and self.rom.valid):
if (not self.isRunning):
self.isRunning = True;
self.ppu.startFrame()
#self.executionThread.start()
else:
print "There is no ROM loaded, or it is invalid."
def printFps(self):
pass
def stop(self):
self.isRunning = False
def reloadRom(self):
if self.romFile:
self.loadRom(self.romFile)
def loadRom(self, file):
if self.isRunning:
self.stop()
print "Loading rom {0}...".format(file)
# Load ROM file
self.rom = Rom(self)
self.rom.load(file)
if self.rom.valid:
print "Rom loaded."
self.reset()
print "Creating rom mapper..."
self.mmap = self.rom.createMapper()
if not self.mmap:
return
self.mmap.loadROM()
# TODO:
self.ppu.setMirroring(self.rom.getMirroringType())
self.romFile = file
print "Initialized NES, ready to start."
else:
print "Invalid ROM: {0}".format(file)
return self.rom.valid
else:
rom_file_name = 'supermario.nes'
nes = NES()
rom = ROM(nes)
if rom.headercheck(rom_file_name) != True:
exit()
nes.rom = rom
mem = MEMORY(nes)
rom.load(rom_file_name, mem)
nes.mem = mem
cpu = CPU(nes)
nes.cpu = cpu
cpu.reset()
ppu = PPU(nes)
nes.ppu = ppu
ppu.reset()
disp = DISPLAY(nes)
nes.disp = disp
disp.init()
in_put = INPUT(nes)
nes.in_put = in_put
in_put.reset()
nes.start()
