This is a multi-dimension example (currently not support)

mdarray.py

from copy import copy
from myhdl import *

def m_mdarray_top(clock, reset, x, y):
    N = 16
    M = 5
    A = [[Signal(intbv(0)[8:]) for _ in range(N)]
         for __ in range(M)]
    B = copy(A)
    g = m_mdarray(clock, reset, A, B, N, M)
    return g
    
def m_mdarray(clock, reset, A, B, N, M):
    @always_seq(clock.posedge, reset=reset)    
    def rtl():
        for ii in range(M):    
            for jj in range(N):
                A[ii][jj].next = B[ii][jj]
    return rtl

clock = Signal(bool(0))
reset = ResetSignal(0, active=0, async=True)
x,y = [Signal(intbv(0)[8:]) for _ in range(2)]
toVHDL(m_mdarray_top, clock, reset, x, y)