ULPT(4) | Device Drivers 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 distribution 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.

February 4, 2013 | Debian