The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/ppbus/lpt.h

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    1 /*-
    2  * Copyright (c) 1990 The Regents of the University of California.
    3  * All rights reserved.
    4  *
    5  * This code is derived from software contributed to Berkeley by
    6  * William Jolitz.
    7  *
    8  * Copyright (c) 1997, 1999 Nicolas Souchu
    9  * All rights reserved.
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  *
   32  * Distantly from :
   33  *      @(#)lptreg.h      1.1 (Berkeley) 12/19/90
   34  *      Id: lptreg.h,v 1.6 1997/02/22 09:36:52 peter Exp
   35  *      From Id: nlpt.h,v 1.3 1999/01/10 12:04:54 nsouch Exp
   36  *
   37  * $FreeBSD$
   38  */
   39 
   40 /*
   41  * AT Parallel Port (for lineprinter)
   42  * Interface port and bit definitions
   43  * Written by William Jolitz 12/18/90
   44  * Copyright (C) William Jolitz 1990
   45  */
   46 
   47 #ifndef __LPT_H
   48 #define __LPT_H
   49 
   50 /* machine independent definitions, it shall only depend on the ppbus
   51  * parallel port model */
   52 
   53                                         /* PIN */
   54 #define LPS_NERR                0x08    /* 15  printer no error */
   55 #define LPS_SEL                 0x10    /* 13  printer selected */
   56 #define LPS_OUT                 0x20    /* 12  printer out of paper */
   57 #define LPS_NACK                0x40    /* 10  printer no ack of data */
   58 #define LPS_NBSY                0x80    /* 11  printer busy */
   59 
   60 #define LPC_STB                 0x01    /*  1  strobe data to printer */
   61 #define LPC_AUTOL               0x02    /* 14  automatic linefeed */
   62 #define LPC_NINIT               0x04    /* 16  initialize printer */
   63 #define LPC_SEL                 0x08    /* 17  printer selected */
   64 #define LPC_ENA                 0x10    /*  -  enable IRQ */
   65 
   66 #endif

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