Re: [myhdl-list] Conversion error: Type mismatch with earlier assignment

[Josy B. <jos...@gm...>]

Hi Guy,

I studied this a bit deeper and went looking for some 'variable' 
examples in the MyHDL doc and found this one:
def bin2gray(B, G, width):

    """ Gray encoder.

    B -- input intbv signal, binary encoded
    G -- output intbv signal, gray encoded
    width -- bit width

    """

    @always_comb
    def logic():
        Bext = intbv(0)[width+1:]
        Bext[:] = B
        for i in range(width):
            G.next[i] = Bext[i+1] ^ Bext[i]

    return logic

And to my surprise it uses the [:] ...
So it may not be a bug, as it is actually _documented_ behaviour ...
But I maintain that it is inconsistent because e.g.:  if I change
        count_v = count_v + 1
into:
        count_v += 1
the conversion will pass without errors.

Regards,

Josy