ulpt(4) - NetBSD Manual Pages

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ULPT(4)                 NetBSD Kernel Interfaces Manual                ULPT(4)


NAME

     ulpt -- USB 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 pro-
     tocol.

     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,
     http://www.usb.org/developers/devclass_docs/usbprint11.pdf, January 2000.


HISTORY

     The ulpt driver appeared in NetBSD 1.4.

NetBSD 9.1                       May 16, 2009                       NetBSD 9.1