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45 lines
1.0 KiB
45 lines
1.0 KiB
class Register:
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registers = []
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def __init__(self, n_bits, name=None):
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self.n_bits = n_bits
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if name is None:
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self.name = "r{}".format(len(Register.registers))
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else:
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self.name = name
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self.value = 0
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Register.registers.append(self)
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def truncate_val(self, value, bits=None):
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if bits is None:
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bits = self.n_bits
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return value & ((1 << bits) - 1)
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def trucate(self):
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self.value = self.truncate_val(self.value)
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def set(self, value):
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if value < 0:
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self.value = self.truncate_val(abs(value), self.n_bits - 1)
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self.negate()
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self.trucate()
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def get(self):
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return self.value
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def complement(self):
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self.value = self.value ^ ((1 << self.n_bits) - 1)
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def negate(self):
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self.complement()
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self.value += 1
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class Acumulator(Register):
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positive_flag = False
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negative_flag = False
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zero_flag = False
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carry = False
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def add(self, register):
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pass
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