ULPT(4) Kernel Interfaces Manual ULPT(4)
NAME
ulptUSB printer support
SYNOPSIS
ulpt* at uhub?
DESCRIPTION
The ulpt driver provides support for Universal Serial Bus (USB) printers that follow either the USB printer uni-directional or bi-directional protocol.
 
Additional bits OR-ed in the minor device number with the unit number select various features of the driver:
 
Minor Bit
Function
0x40
Do not initialize (reset) the device on the port.
 
Some printers cannot handle the reset on open; in case of problems try the ulpn device.
FILES
/dev/ulpt?
USB printer with reset on open
/dev/ulpn?
USB printer without reset on open
SEE ALSO
lpt(4), usb(4)
USB Device Class Definition for Printing Devices, USB Implementors Forum, January 2000.
http://www.usb.org/developers/devclass_docs/usbprint11.pdf
HISTORY
The ulpt driver appeared in NetBSD 1.4.