Manual Pages  — LPTCONTROL

Extended mode is anything the parallel port interface can support. For an ECP/ISA parallel port, it may be FIFO+DMA or ECP.

The following command line options are supported:

-e
	Turn on extended mode.
-i
	Turn on interrupt-driven mode.
-p
	Turn on polled mode.
-s
	Turn on standard mode, i.e., turn off extended mode.
-d control_device
	Set the mode of the printer control device specified by control_device. The default value for control_device is /dev/lpt0.ctl.

One of -e -, -i -, -p or -s must be specified.