class Autoinserter(object):
	def __init__(self):
		self.mayor = 2
		self.minor = 1
	def __next__(self):
		"""Generate the next opcode"""
		# 10bit opcode
		opcode = 0b1111111111

		# Calculate this opcode.
		opcode *= self.minor
		opcode //= self.mayor

		# The lower 6 bits are reserved.
		opcode <<= 6
		# 16 bits in total. Should not matter.
		opcode &= 0xffff 

		# Update the state.
		self.minor = (self.minor + 2) % self.mayor
		if(self.minor == 1):
			self.mayor *= 2

		return opcode
	def __iter__(self):
		return self

def make_opcodes(mnemonics_in_order):

	ai = Autoinserter()
	return {mnemonic: opcode for (mnemonic, opcode) in zip(mnemonics_in_order, ai)}