def _cond_jp(processor, memory, pc, flag, jump_value):
address, pc = fetch_word(memory, pc)
if processor.condition(flag) == jump_value:
processor.special_registers['pc'] = address
return 10, True, pc
else:
return 10, False, pc
def execute(self, processor, memory, pc):
address, pc = fetch_word(memory, pc)
if not self.processor.condition('c'):
call_to(self.processor, 3, address)
return 5, True, pc
else:
return 3, False, pc
def _cond_jp(processor, memory, pc, flag, jump_value):
address, pc = fetch_word(memory, pc)
if processor.condition(flag) == jump_value:
processor.special_registers['pc'] = address
return 10, True, pc
else:
return 10, False, pc
def execute(self, processor, memory, pc):
src_address, pc = fetch_word(memory, pc)
low_byte = self.memory[0xffff & src_address]
high_byte = self.memory[0xffff & (src_address + 1)]
self.processor.main_registers['h'] = high_byte
self.processor.main_registers['l'] = low_byte
return 16, False, pc
def execute(self, processor, memory, pc):
src_address, pc = fetch_word(memory, pc)
low_byte = self.memory[0xffff & src_address]
high_byte = self.memory[0xffff & (src_address + 1)]
self.processor.main_registers[self.destination_reg[0]] = high_byte
self.processor.main_registers[self.destination_reg[1]] = low_byte
return 20, False, pc
def execute(self, processor, memory, pc):
word, pc = fetch_word(memory, pc)
call_to(self.processor, 3, word)
return 17, True, pc
def execute(self, processor, memory, pc):
address, pc = fetch_word(memory, pc)
jp_to(self.processor, address)
return 10, True, pc
def execute(self, processor, memory, pc):
address, pc = fetch_word(memory, pc)
jp_to(self.processor, address)
return 10, True, pc
def execute(self, processor, memory, pc):
address, pc = fetch_word(memory, pc)
self.memory[0xffff & address] = self.processor.main_registers['a']
return 13, False, pc
def execute(self, processor, memory, pc):
src_address, pc = fetch_word(memory, pc)
low_byte = self.memory[0xffff & src_address]
high_byte = self.memory[0xffff & (src_address + 1)]
self.processor.index_registers[self.indexed_reg] = big_endian_value([low_byte, high_byte])
return 20, False, pc
def execute(self, processor, memory, pc):
dest_address, pc = fetch_word(memory, pc)
high_byte, low_byte = high_low_pair(self.processor.index_registers[self.indexed_reg])
self.memory[0xffff & dest_address] = low_byte
self.memory[0xffff & (dest_address + 1)] = high_byte
return 20, False, pc
def execute(self, processor, memory, pc):
address, pc = fetch_word(memory, pc)
self.processor.index_registers[self.indexed_reg] = address
return 14, False, pc
def execute(self, processor, memory, pc):
address, pc = fetch_word(memory, pc)
self.processor.special_registers['sp'] = address
return 10, False, pc
def execute(self, processor, memory, pc):
dest_address, pc = fetch_word(memory, pc)
self.memory[0xffff & dest_address] = self.processor.main_registers['l']
self.memory[0xffff & dest_address + 1] = self.processor.main_registers['h']
return 16, False, pc
def execute(self, processor, memory, pc):
dest_address, pc = fetch_word(memory, pc)
self.memory[0xffff & dest_address] = self.processor.main_registers[self.source_reg[1]]
self.memory[0xffff & dest_address + 1] = self.processor.main_registers[self.source_reg[0]]
return 20, False, pc