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ULPT(4) Device Drivers Manual ULPT(4)

ulpt — USB printer support

ulpt* at uhub?

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.

/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.

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

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

February 4, 2013 OpenBSD-current