function getmodems(mode)
  mode = mode or "default"

  if mode == "default" then
    allp = peripheral.getNames()
    d = {}
    x = 0
    for i,value in ipairs(allp) do
      c = peripheral.getType(value)
      if c == "modem" then
        c = peripheral.wrap(value)
        x = x + 1
        d[x] = c
      end
    end
    d["a"] = x
    d["amount"] = x
    return d
  elseif mode == "sides" or mode =="s" then
    allp = peripheral.getNames()
    d = {}
    x = 0
    for i,value in ipairs(allp) do
      c = peripheral.getType(value)
      if c == "modem" then
        x = x + 1
        d[x] = value
      end
    end
    d["a"] = x
    d["amount"] = x
	return d
  end
end