def _cond_jr(processor, memory, pc, flag, jump_value):
offset, pc = fetch_signed_byte(memory, pc)
if processor.condition(flag) == jump_value:
_jr_offset(processor.special_registers, offset)
return 12, True, pc
else:
return 7, False, pc
def _cond_jr(processor, memory, pc, flag, jump_value):
offset, pc = fetch_signed_byte(memory, pc)
if processor.condition(flag) == jump_value:
_jr_offset(processor.special_registers, offset)
return 12, True, pc
else:
return 7, False, pc
def execute(self, processor, memory, pc):
offset, pc = fetch_signed_byte(memory, pc)
_cp_value(
self.processor,
self.memory[0xffff
& (self.processor.index_registers[self.indexed_reg] +
offset)], False)
return 19, False, pc
def execute(self, processor, memory, pc):
offset, pc = fetch_signed_byte(memory, pc)
self.processor.main_registers['b'] = (self.processor.main_registers['b'] - 1) & 0xff
if self.processor.main_registers['b'] != 0:
_jr_offset(self.processor.special_registers, offset)
return 13, True, pc
else:
return 8, False, pc
def execute(self, processor, memory, pc):
offset, pc = fetch_signed_byte(memory, pc)
self.processor.main_registers['b'] = (
self.processor.main_registers['b'] - 1) & 0xff
if self.processor.main_registers['b'] != 0:
_jr_offset(self.processor.special_registers, offset)
return 13, True, pc
else:
return 8, False, pc
def execute(self, processor, memory, pc):
offset, pc = fetch_signed_byte(memory, pc)
_jr_offset(processor.special_registers, offset)
return 12, True, pc
def execute(self, processor, memory, pc):
offset, pc = fetch_signed_byte(memory, pc)
address = self.processor.index_registers[self.indexed_reg] + offset
result = _dec_value(self.processor, self.memory[0xffff & address])
self.memory[0xffff & address] = result
return 23, False, pc
def execute(self, processor, memory, pc):
offset, pc = fetch_signed_byte(memory, pc)
value = self.memory[0xffff & (
self.processor.index_registers[self.indexed_reg] + offset)]
_sub_a(self.processor, value, self.processor.condition('c'))
return 19, False, pc
def execute(self, processor, memory, pc):
offset, pc = fetch_signed_byte(memory, pc)
address = self.processor.index_registers[self.indexed_reg] + offset
result = _dec_value(self.processor, self.memory[0xffff & address])
self.memory[0xffff & address] = result
return 23, False, pc
def execute(self, processor, memory, pc):
offset, pc = fetch_signed_byte(memory, pc)
_cp_value(self.processor, self.memory[0xffff & (self.processor.index_registers[self.indexed_reg] + offset)], False)
return 19, False, pc
def execute(self, processor, memory, pc):
offset, pc = fetch_signed_byte(memory, pc)
value = self.memory[0xffff & (self.processor.index_registers[self.indexed_reg] + offset)]
_sub_a(self.processor, value, self.processor.condition('c'))
return 19, False, pc
def execute(self, processor, memory, pc):
offset, pc = fetch_signed_byte(memory, pc)
_jr_offset(processor.special_registers, offset)
return 12, True, pc
