--- nand.py-
+++ nand.py
@@ -435,6 +435,22 @@
 		self.jt.new_pin().conn = self.and_out.inp_b
 		self.and_out.out.conn = Pin(self, 'D_0', 'L')
 
+class ROM(Obj):
+	def __init__(self, parent, dbit_n, abit_n, dlst=(), name='rom', latency=10):
+		Obj.__init__(self, parent, name)
+		self.n = dbit_n
+		Pin(self, 'en', 'L').conn = Joint(self, 'jt_en').new_pin()
+		for i in range(abit_n):
+			Pin( self, name_i('A', i), 'L' )
+		Joint_N(self, abit_n, 'jt_n_A').new_pin_conn(self, 'A', abit_n, 'from_targ')
+
+		for i in range(dbit_n):
+			dlst_i = [ (d >> i) & 1 for d in dlst ]
+			rom_b = ROM_D1(self, abit_n, dlst_i, name_i('rom_b', i), latency)
+			self.jt_en.new_pin().conn = rom_b.en
+			self.jt_n_A.new_pin_conn(rom_b, 'A', abit_n, 'to_targ')
+			rom_b.D_0.conn = Pin( self, name_i('D', i), 'L' )
+
 class CLK(Obj):
 	def __init__(self, parent, hz=1.0, name='clk', pos=(0,0), lamp_name=None):
 		Obj.__init__(self, parent, name, None, pos)