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ULPT(4) Device Drivers Manual ULPT(4)


ulptUSB 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.


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:
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