| lpt.4 (56460) | lpt.4 (57676) |
|---|---|
| 1.\" 2.\" Copyright (c) 1993 Christopher G. Demetriou 3.\" Copyright (c) 1994 Geoffrey M. Rehmet 4.\" Copyright (c) 1999 Nicolas Souchu 5.\" All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions --- 11 unchanged lines hidden (view full) --- 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" | 1.\" 2.\" Copyright (c) 1993 Christopher G. Demetriou 3.\" Copyright (c) 1994 Geoffrey M. Rehmet 4.\" Copyright (c) 1999 Nicolas Souchu 5.\" All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions --- 11 unchanged lines hidden (view full) --- 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" |
| 28.\" $FreeBSD: head/share/man/man4/lpt.4 56460 2000-01-23 15:04:20Z asmodai $ | 28.\" $FreeBSD: head/share/man/man4/lpt.4 57676 2000-03-01 14:50:24Z sheldonh $ |
| 29.\" 30.Dd February 14, 1999 31.Dt LPT 4 32.Os FreeBSD 33.Sh NAME 34.Nm lpt 35.Nd 36Generic printer device driver --- 17 unchanged lines hidden (view full) --- 54.Sh DESCRIPTION 55The current 56.Em lpt 57driver is the port of the original lpt driver to the 58.Xr ppbus 4 59system. 60.Pp 61One purpose of this port was to allow parallel port sharing with other | 29.\" 30.Dd February 14, 1999 31.Dt LPT 4 32.Os FreeBSD 33.Sh NAME 34.Nm lpt 35.Nd 36Generic printer device driver --- 17 unchanged lines hidden (view full) --- 54.Sh DESCRIPTION 55The current 56.Em lpt 57driver is the port of the original lpt driver to the 58.Xr ppbus 4 59system. 60.Pp 61One purpose of this port was to allow parallel port sharing with other |
| 62parallel devices. Secondly, inb()/outb() calls have been replaced by ppbus 63function calls. lpt is now arch-independent thanks to the ppbus interface. See | 62parallel devices. 63Secondly, inb()/outb() calls have been replaced by ppbus 64function calls. 65lpt is now arch-independent thanks to the ppbus interface. 66See |
| 64.Xr ppbus 4 65for more info about the ppbus system. 66.Pp 67The parallel port bus is allocated by lpt when the printer device is opened 68and released only when the transfer is completed: either when the device 69is closed or when the entire buffer is sent in interrupt driven mode. 70.Pp 71The driver can be configured to be either interrupt-driven, or 72to poll the printer. Ports that are configured to be 73interrupt-driven can be switched to polled mode by using the 74.Xr lptcontrol 8 75command. 76.Pp 77Depending on your hardware, extended capabilities may be configured with the 78.Xr lptcontrol 8 | 67.Xr ppbus 4 68for more info about the ppbus system. 69.Pp 70The parallel port bus is allocated by lpt when the printer device is opened 71and released only when the transfer is completed: either when the device 72is closed or when the entire buffer is sent in interrupt driven mode. 73.Pp 74The driver can be configured to be either interrupt-driven, or 75to poll the printer. Ports that are configured to be 76interrupt-driven can be switched to polled mode by using the 77.Xr lptcontrol 8 78command. 79.Pp 80Depending on your hardware, extended capabilities may be configured with the 81.Xr lptcontrol 8 |
| 79command. With an ECP/ISA port, you can take advantage | 82command. 83With an ECP/ISA port, you can take advantage |
| 80of FIFO and DMA. 81.Pp 82In order to retrieve printer info from /dev/lpt0, just apply the 83.Nm cat | 84of FIFO and DMA. 85.Pp 86In order to retrieve printer info from /dev/lpt0, just apply the 87.Nm cat |
| 84command to the device. If the printer supports IEEE1284 nibble mode and has | 88command to the device. 89If the printer supports IEEE1284 nibble mode and has |
| 85data to send to the host, you'll get it. 86.Sh SEE ALSO 87.Xr ppbus 4 , 88.Xr lptcontrol 8 89.Sh HISTORY 90This driver replaces the functionality of the lpa 91driver, which is now defunct. 92.Sh FILES --- 13 unchanged lines hidden --- | 90data to send to the host, you'll get it. 91.Sh SEE ALSO 92.Xr ppbus 4 , 93.Xr lptcontrol 8 94.Sh HISTORY 95This driver replaces the functionality of the lpa 96driver, which is now defunct. 97.Sh FILES --- 13 unchanged lines hidden --- |