def _and_a_value(processor, value):
result = processor.main_registers['a'] & value
processor.main_registers['a'] = result
set_condition = processor.set_condition
set_condition('s', result & 0b10000000 > 0)
set_condition('z', result == 0)
set_condition('h', True)
set_condition('p', has_parity(result))
set_condition('n', False)
set_condition('c', False)
def _and_a_value(processor, value):
result = processor.main_registers['a'] & value
processor.main_registers['a'] = result
set_condition = processor.set_condition
set_condition('s', result & 0b10000000 > 0)
set_condition('z', result == 0)
set_condition('h', True)
set_condition('p', has_parity(result))
set_condition('n', False)
set_condition('c', False)
def execute(self, processor, memory, pc):
value = self.io.read(self.processor.main_registers['c'], self.processor.main_registers['b'])
self.processor.main_registers[self.dest_reg] = value
self.processor.set_condition('s', (value & 0b10000000) > 0)
self.processor.set_condition('z', value == 0)
self.processor.set_condition('h', False)
self.processor.set_condition('p', has_parity(value))
self.processor.set_condition('n', False)
return 12, False, pc
def execute(self, processor, memory, pc):
value = self.io.read(self.processor.main_registers['c'],
self.processor.main_registers['b'])
self.processor.main_registers[self.dest_reg] = value
self.processor.set_condition('s', (value & 0b10000000) > 0)
self.processor.set_condition('z', value == 0)
self.processor.set_condition('h', False)
self.processor.set_condition('p', has_parity(value))
self.processor.set_condition('n', False)
return 12, False, pc
def _daa_after_sub(processor, digits, fc, hc):
if not fc and not hc:
if digits[0] <= 0x9 and digits[1] <= 0x9:
pass
elif not fc and hc:
if digits[0] <= 0x8 and digits[1] >= 0x6:
processor.main_registers['a'] += 0xfa
elif fc and not hc:
if digits[0] >= 0x7 and digits[1] <= 0x9:
processor.main_registers['a'] += 0xa0
processor.set_condition('c', True)
elif fc and hc:
if digits[0] >= 0x6 and digits[1] >= 0x6:
processor.main_registers['a'] += 0x9a
processor.set_condition('c', True)
processor.main_registers['a'] &= 0xff
result = processor.main_registers['a']
processor.set_condition('s', (result & 0b10000000) > 0)
processor.set_condition('z', result == 0)
processor.set_condition('p', has_parity(result))
def _daa_after_sub(processor, digits, fc, hc):
if not fc and not hc:
if digits[0] <= 0x9 and digits[1] <= 0x9:
pass
elif not fc and hc:
if digits[0] <= 0x8 and digits[1] >= 0x6:
processor.main_registers['a'] += 0xfa
elif fc and not hc:
if digits[0] >= 0x7 and digits[1] <= 0x9:
processor.main_registers['a'] += 0xa0
processor.set_condition('c', True)
elif fc and hc:
if digits[0] >= 0x6 and digits[1] >= 0x6:
processor.main_registers['a'] += 0x9a
processor.set_condition('c', True)
processor.main_registers['a'] &= 0xff
result = processor.main_registers['a']
processor.set_condition('s', (result & 0b10000000) > 0)
processor.set_condition('z', result == 0)
processor.set_condition('p', has_parity(result))
