SimCPU_v1/cpu_data.py

def alu_op():
  ALUop = dict()
  for i in '+-x÷':
    ALUop[i] = False
  return ALUop


def alu_io():
  ALUio = dict()
  Register = ["R1", "R2", "R3", "R4"]
  for reg in Register:
    ALUio[f"{reg}_ALU_1"] = False
    ALUio[f"{reg}_ALU_2"] = False
    ALUio[f"ALU_{reg}"] = False
  return ALUio


def clock_step():
  ClockStep = dict()
  for i in range(6):
    ClockStep[str(i + 1)] = False
  return ClockStep


def sig_obj():
  SigObj = dict()
  Register = ["R1", "R2", "R3", "R4", "IR"]
  ctrl = ["ALU","ALU_1", "ALU_2", "PC+1", "Memory"]
  for r in Register:
    SigObj[f"Mcontent->{r}"] = [f"Mcontent->{r}", False, "DataSig"]
    SigObj[f"->{r}"] = [f"->{r}", False, "CtrlSig"]
  for ct in ctrl:
    SigObj[f"->{ct}"] = [f"->{ct}", False, "CtrlSig"]
  SigObj["IR->SigCtrl"] = ["IR->SigCtrl", False, "CtrlSig"]
  SigObj["PC->Maddr"] = ["PC->Maddr", False, "DataSig"]
  SigObj["IR->Maddr"] = ["IR->Maddr", False, "DataSig"]
  SigObj["Memory->Mcontent"] = ["Memory->Mcontent", False, "DataSig"]
  SigObj["Mcontent->PC"] = ["Mcontent->PC", False, "DataSig"]
  SigObj["Mcontent->Memory"] = ["Mcontent->Memory", False, "DataSig"]
  return SigObj


def sim_mem():
  sim_mem_ls = []
  for i in range(20):
    sim_mem_ls.append(f"{0:016b}")
  return sim_mem_ls


def bin_to_dec(binary_string, bit_width=16):
  """
  将补码二进制字符串转换为有符号数10进制，处理溢出。

  参数：
  binary_string (str): 补码二进制字符串，例如 "1101100101101110"。
  bit_width (int): 位宽，默认为16位。

  返回：
  int: 转换后的有符号数10进制。
  """
  if len(binary_string) > bit_width:
    # 如果二进制字符串长度超出位宽，截断超出部分
    binary_string = binary_string[-bit_width:]

  # 如果最高位为1，说明是负数，先取反再加1得到绝对值的原码
  if binary_string[0] == '1':
    inverted_string = ''.join('1' if bit == '0' else '0' for bit in binary_string)
    absolute_value = -(int(inverted_string, 2) + 1)
  else:
    # 如果最高位是0，则直接转换为正数
    absolute_value = int(binary_string, 2)

  return absolute_value


def dec_to_bin(decimal_value, bit_width=16):
  """
  将有符号数10进制转换为补码二进制字符串，处理溢出。

  参数：
  decimal_value (int): 有符号数10进制。
  bit_width (int): 位宽，默认为16位。

  返回：
  str: 转换后的补码二进制字符串。
  """
  # 如果输入数据超出位宽，截断超出部分
  decimal_value = decimal_value & ((1 << bit_width) - 1)

  # 如果是负数，获取其绝对值的原码
  if decimal_value < 0:
    absolute_value_binary = bin(abs(decimal_value))[2:]

    # 如果位数不足，需要在左侧补0
    if len(absolute_value_binary) < bit_width:
      absolute_value_binary = '0' * (bit_width - len(absolute_value_binary)) + absolute_value_binary

    # 对绝对值的原码进行按位取反
    inverted_representation = ''.join('1' if bit == '0' else '0' for bit in absolute_value_binary)

    # 将取反后的二进制表示加上1，得到补码表示
    binary_representation = format(int(inverted_representation, 2) + 1, f'0{bit_width}b')
  else:
    # 如果是正数，直接转换为二进制
    binary_representation = bin(decimal_value)[2:]

    # 如果位数不足，需要在左侧补0
    if len(binary_representation) < bit_width:
      binary_representation = '0' * (bit_width - len(binary_representation)) + binary_representation

  return binary_representation


ALUio = alu_io()
ALUop = alu_op()
ClockStep = clock_step()
SigObj = sig_obj()
SimMem = sim_mem()

if __name__ == '__main__':
  ALUio = alu_io()
  print(ALUio)
  ALUop = alu_op()
  print(ALUop)
  ClockStep = clock_step()
  print(ClockStep)
  SigObj = sig_obj()
  print(SigObj)
  SimMem = sim_mem()
  print(SimMem)