class Emulator():
FPS = 60
"""
int, frames per second
"""
def __init__(self, fname):
self.cart = Cartridge(fname)
self.mem = Memory()
self.display = Display()
self.cpu = CPU()
# initial values for cpu
self.cpu.set(PC=0x100,
SP=0xFFFE,
AF=0x01B1,
BC=0x0013,
DE=0x00D8,
HL=0x014D)
# set rom banking mode
self.mem.set_rom_bank_mode(self.cart.get_rom_bank_mode_byte())
def update(self):
# operations to execute before a frame draw
max_cycles = self.cpu.CLOCK_SPEED / self.FPS
c = 0
while (c < max_cycles):
c += self.cpu.execute_next_opcode()
self.cpu.update_timers(c)
# update_graphics(c)
# do_interupts()
self.display.render()
