About Bitwise

Bitwise is a Python library intended to make hardware design and simulation more accessible for software engineers. While it can never replace a true hardware description language, it aims to serve as a useful tool in the hardware design process, allowing a user to build and test their digital circuits in a high-level programming language (i.e. with simpler syntax and more flexible semantics) before implementing them using an HDL.

Quick Example

The following code creates a half-adder circuit:

Create a half-adder.
import bitwise as bw

def main():
    # initialize inputs
    a = bw.wire.Wire()
    b = bw.wire.Wire()

    # initialize outputs
    sum_ = bw.wire.Wire()
    carry_out = bw.wire.Wire()

    # create circuit
    bw.gate.XORGate2(a, b, sum_)  # XORs a and b and puts the result into sum_
    bw.gate.ANDGate2(a, b, carry_out)  # ANDs a and b and puts the result into carry_out

if __name__ == "__main__":

Interacting with it in a Python session:

In [1]: a.value = 0

In [2]: b.value = 0

In [3]: sum_.value
Out[3]: 0

In [4]: carry_out.value
Out[4]: 0

In [5]: a.value = 1

In [6]: sum_.value
Out[6]: 1

In [7]: carry_out.value
Out[7]: 0

In [8]: b.value = 1

In [9]: sum_.value
Out[9]: 0

In [10]: carry_out.value
Out[10]: 1