multidim array simulation only example

array3.py

from myhdl import *

def array3(clock, reset, sel1, sel2, data_out):
    """ simulation only """
    # generate an array of constants
    aoc = [[cc for cc in range((ii*3)+1, (ii*3)+4)] for ii in range(3)]
    
    @always_seq(clock.posedge, reset=reset)
    def rtlreg():
        data_out.next = aoc[sel2][sel1]

    return rtlreg


def test_array3():
    clock = Signal(bool(0))
    reset = ResetSignal(0, active=0, async=True)
    sel1, sel2 = [Signal(intbv(0)[2:]) for _ in range(2)]
    data_out = Signal(intbv(0)[4:])

    def _bench():
        tbdut = array3(clock, reset, sel1, sel2, data_out)
        
        @always(delay(5))
        def tbclk():
            clock.next = not clock

        @instance
        def tbstim():
            reset.next = reset.active
            for _ in range(3):
                yield clock.posedge
            reset.next = not reset.active
            yield clock.posedge

            sel1.next, sel2.next = 2, 2
            for _ in range(8):
                yield clock.posedge

            # some additional delay ???
            assert data_out == 9

            for jj in range(3):
                sel2.next= jj
                for ii in range(3):
                    sel1.next = ii
                    yield clock.posedge  # clock in sel
                    yield clock.posedge  # clock in data
                    print(data_out)
                    assert data_out == 1+jj*3+ii
                    
            raise StopSimulation

        return tbdut, tbclk, tbstim
            
    Simulation(traceSignals(_bench)).run()


if __name__ == '__main__':
    test_array3()