main

function start()
	--stop terminate events
	os.pullEvent = os.pullEventRaw

	--clear the screen
	func.clear()

	--check if drive is present
	if periph.pScan('drive') == 1 then
		drive = true
	end

	--check if monitor is present
	if periph.pScan('monitor') == 1 then
		monitor = true

	end

	--check if printer is present
	if periph.pScan('printer') == 1 then
		printer = true
	end

	--check if modem is present
	if periph.pScan('modem') == 1 then
		modem = true
		periph.modem()
	end

	--start main menu
	ui.main()
end