NAME
lptcontrol —
a utility for manipulating the lpt
printer driver
SYNOPSIS
lptcontrol |
-e | -i |
-p | -s
[-d control_device] |
DESCRIPTION
Thelptcontrol utility is used to set either the
interrupt-driven, extended, standard, or polling mode of individual
lpt(4) devices. When a printer is switched from a mode to another, this
change will only take effect the next time the device is opened.
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.
-dcontrol_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.
FILES
- /dev/lpt?
- printer devices
- /dev/lpt?.ctl
- printer control devices
- /sys/i386/conf/GENERIC
- kernel configuration file
- /boot/device.hints
- device hints for the parallel port chipset driver, ppc(4)
SEE ALSO
HISTORY
The lptcontrol utility first appeared in
FreeBSD 1.1.5
AUTHORS
Geoffrey M. Rehmet
BUGS
The control device name should never have been an option, but should have been an optional argument. Because of this, a single argument is treated as a device name.