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ULPT(4)                  BSD Kernel Interfaces Manual                  ULPT(4)

NAME
     ulpt -- USB printer support

SYNOPSIS
     ulpt*   at uhub?

DESCRIPTION
     The ulpt driver provides support for USB printers that follow the printer
     bi- or uni-directional protocol.  The bits in the minor number select
     various features of the driver.

           Minor Bit    Function
           64           Do not initialize the device on the port.

FILES
     /dev/ulpt?

     For some HP LaserJet printer models (1000, 1005, 1018, 1020), the driver
     needs at least version 1.0 of the following firmware files, which are
     loaded when a printer is attached:

           /etc/firmware/ulpt-hp1000
           /etc/firmware/ulpt-hp1005
           /etc/firmware/ulpt-hp1018
           /etc/firmware/ulpt-hp1020

     These firmware files are not free because HP refuses to grant distribu-
     tion rights.  As a result, even though OpenBSD includes the driver, the
     firmware files cannot be included and users have to download these files
     on their own.  A port which can download and install the firmware can be
     found in /usr/ports/sysutils/firmware/ulpt.

SEE ALSO
     intro(4), lpt(4), uhub(4), usb(4)

HISTORY
     The ulpt driver appeared in NetBSD 1.4.  OpenBSD support was added in
     OpenBSD 2.7.

BSD                             March 24, 2017                             BSD