--- nand.py-
+++ nand.py
@@ -225,7 +225,6 @@
 	# inp_x, out
 	def __init__(self, parent, n, name='nand_n', latency=10):
 		Obj.__init__(self, parent, name)
-		self.n = n
 		new_pin_n( n, self, 'inp' )
 		AND_N(self, n, 'and_n', latency)
 		conn2_n( n, (self, 'inp', 0), (self.and_n, 'inp', 0) )
@@ -238,7 +237,6 @@
 	# inp_x, out
 	def __init__(self, parent, n, name='nor_n', latency=10):
 		Obj.__init__(self, parent, name)
-		self.n = n
 		new_pin_n( n, self, 'inp' )
 		OR_N(self, n, 'or_n', latency)
 		conn2_n( n, (self, 'inp', 0), (self.or_n, 'inp', 0) )
@@ -353,7 +351,6 @@
 	# inp_x, CLK, out_x
 	def __init__(self, parent, n, name='latch', latency=10):
 		Obj.__init__(self, parent, name)
-		self.n = n
 		Pin(self, 'CLK').conn = Joint(self, 'jt_clk').new_pin()
 		for i in range(n):
 			dff_i = DFF( self, name_i('dff', i), latency )
@@ -387,7 +384,6 @@
 	# CLK, out_x
 	def __init__(self, parent, bit_n, name='counter', latency=10):
 		Obj.__init__(self, parent, name)
-		self.n = bit_n
 		clk = Pin(self, 'CLK')
 		for i in range(bit_n):
 			tff = TFF( self, name_i('tff', i), latency )
@@ -424,7 +420,6 @@
 	# p_x
 	def __init__(self, parent, n, dlst=(), name='pin_set'):
 		Obj.__init__(self, parent, name)
-		self.n = n
 		new_pin_n(n, self, 'p', 0, dlst)
 
 class NOTSet(Obj):
@@ -440,7 +435,6 @@
 	# inp_x, sel_x, out_x
 	def __init__(self, parent, n, name='and_set', latency=10):
 		Obj.__init__(self, parent, name)
-		self.n = n
 		for i in range(n):
 			and_i = AND( self, name_i('and', i), latency )
 			Pin( self, name_i('inp', i) ).conn = and_i.inp_a
@@ -478,7 +472,6 @@
 	# inp_x, en, out_x
 	def __init__(self, parent, n, name='gate', latency=10):
 		Obj.__init__(self, parent, name)
-		self.n = n
 
 		ANDSet(self, n, 'and_set', latency)
 
@@ -494,7 +487,6 @@
 	# en, A_x, D_x, out
 	def __init__(self, parent, bit_n, name='selector', latency=10):
 		Obj.__init__(self, parent, name)
-		self.n = bit_n
 		new_pin_n(bit_n, self, 'A')
 		DECODER(self, bit_n, 'deco', latency)
 		conn2_n( bit_n, (self, 'A', 0), (self.deco, 'inp', 0) )
@@ -535,7 +527,6 @@
 	def __init__(self, parent, abit_n, dlst=(), name='rom_d1', latency=10):
 		Obj.__init__(self, parent, name)
 		self.dbgout(dlst)
-		self.n = abit_n
 		dn = 1 << abit_n
 
 		SELECTOR(self, abit_n, 'select', latency)
@@ -831,7 +822,6 @@
 	# Cin, A_x, B_x, Y_x, C
 	def __init__(self, parent, n, name='add_n', latency=10):
 		Obj.__init__(self, parent, name)
-		self.n = n
 		c = Pin(self, 'Cin', 'L')
 		for i in range(n):
 			add_c = ADD_C( self, name_i('add_c', i), latency )