sys/dev/ic/lptreg.h

   1 /*      $NetBSD: lptreg.h,v 1.9 2005/12/11 12:21:27 christos Exp $      */
   2
   3 /*-
   4  * Copyright (c) 1990 The Regents of the University of California.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * William Jolitz.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)lptreg.h    1.1 (Berkeley) 12/19/90
  35  */
  36
  37 /*
  38  * AT Parallel Port (for lineprinter)
  39  * Interface port and bit definitions
  40  * Written by William Jolitz 12/18/90
  41  * Copyright (C) William Jolitz 1990
  42  */
  43
  44 /*
  45  * On a standard DB25 parallel port, the bits show up as follows:
  46  *
  47  *   13   12   11   10    9    8    7    6    5    4    3    2    1
  48  *   S4   S5  ~S7   S6   D7   D6   D5   D4   D3   D2   D1   D0  ~C0
  49  *
  50  *      G    G    G    G    G    G    G    G   ~C3   C2   S3  ~C1
  51  *      25   24   23   22   21   20   19   18   17   16   15   14
  52  *
  53  *  D7-D0 are output bits from the data register
  54  *  S7-S3 are input bits read at the status register
  55  *  C3-C0 are output bits from the control register
  56  */
  57
  58 #define lpt_data        0       /* Data to/from printer (R/W) */
  59
  60 #define lpt_status      1       /* Status of printer (R) */
  61 #define LPS_NERR                0x08    /* printer no error */
  62 #define LPS_SELECT              0x10    /* printer selected */
  63 #define LPS_NOPAPER             0x20    /* printer out of paper */
  64 #define LPS_NACK                0x40    /* printer no ack of data */
  65 #define LPS_NBSY                0x80    /* printer not busy */
  66
  67 #define lpt_control     2       /* Control printer (R/W) */
  68 #define LPC_STROBE              0x01    /* strobe data to printer */
  69 #define LPC_AUTOLF              0x02    /* automatic linefeed */
  70 #define LPC_NINIT               0x04    /* initialize printer */
  71 #define LPC_SELECT              0x08    /* printer selected */
  72 #define LPC_IENABLE             0x10    /* printer out of paper */
  73
  74 #define LPT_NPORTS      4