multior.py

from myhdl import block, instance, always_comb, Signal


@block
def orgate(input1, input2, output):
    
    @always_comb
    def orlogic():
        output.next = input1 | input2
        
    return orlogic


@block
def multior(inputs, output, n=2):
    """
    inputs - boolean signal list of all inputs
    output - ORed output
    n - minimum 2
    """
    orinst = [None for _ in range(n-1)]
    outinst = [Signal(bool(0)) for _ in range(n-1)]
    orinst[0] = orgate(inputs[0], inputs[1], outinst[0])

    for i in range(1, n-1):
            out = Signal(bool(0))
            orinst[i] = orgate(outinst[i-1], inputs[i+1], outinst[i])
    
    @always_comb
    def orlogic():
        output.next = outinst[n-1]

    return orlogic, orinst

@block
def test():
    inputs = [Signal(bool(0)) for _ in range(10)]
    output = Signal(bool(0))
    inst = multior(inputs, output, n=10)
    
    return inst

testinst = test()
testinst.convert(hdl='verilog')