class BaseGeneralPurposeRegister(BaseDataRegister):
""" This class represents a register that holds a value with no specific context. Each register has an input
component, whose value is transferred to the register (if write is enabled). """
def __init__(self, register_id, register_name, size):
super().__init__(register_id, register_name)
self._content = BitValue(bits=size)
@property
def content(self):
return self._content.value
@content.setter
def content(self, value):
self._content.value = value
def __len__(self):
return len(self._content)
def __getitem__(self, item):
return self._content[item]
def clear(self):
self._buffer.value = 0
def increment(self):
self._buffer = self._content.copy()
self._buffer.increment()
def __bool__(self):
return bool(self._content)
def __int__(self):
return int(self._content)
int = __int__
__index__ = __int__
def bin(self):
return self._content.bin()
__str__ = bin
def oct(self):
return self._content.oct()
def dec(self):
return self._content.dec()
def hex(self):
return self._content.hex()
class FlagRegister(DataComponent):
""" This class represents a register that holds the values of a set of one-bit flags. Each flag can be set or
cleared separately, but some actions can be taken on the register as a whole. Not all bits in a flag register
need to be assigned to working flags. Flags can be accessed by index, or by name. """
def __init__(self, register_id, register_name, size):
super().__init__(register_id, register_name)
self._content = BitValue(bits=size)
@property
def content(self):
return self._content.value
@content.setter
def content(self, value):
self._content.value = value
def __len__(self):
return len(self._content)
def __getitem__(self, item):
return self._content[item]
def up_tick(self):
# TODO: implement this
raise NotImplementedError
def down_tick(self):
# TODO: implement this
raise NotImplementedError
def __int__(self):
return int(self._content)
int = __int__
__index__ = __int__
def bin(self):
return self._content.bin()
__str__ = bin
def oct(self):
return self._content.oct()
def dec(self):
return self._content.dec()
def hex(self):
return self._content.hex()
def hex(self):
return BitValue(self.bin(), len(self)).hex()
def dec(self):
return BitValue(self.bin(), len(self)).dec()
def oct(self):
return BitValue(self.bin(), len(self)).oct()
def __int__(self):
return int(BitValue(self.bin(), len(self)))
def increment(self):
bv = BitValue(self.bin(), len(self))
bv.increment()
self.content = bv
def __getitem__(self, item):
bv = BitValue(self.bin(), len(self))
return bv[item]
def content(self, value):
start, end, length = self._slice
before, after = self._parent[:start], self._parent[end:]
content = "0b" + after + BitValue(value, length).value + before
self._parent.content = content
def __init__(self, register_id, register_name, size):
super().__init__(register_id, register_name)
self._content = BitValue(bits=size)