sys/platform/pc64/isa/lptreg.h

   1 /*-
   2  * Copyright (c) 1990 The Regents of the University of California.
   3  * Copyright (c) 2008 The DragonFly Project.
   4  * All rights reserved.
   5  *
   6  * This code is derived from software contributed to Berkeley by
   7  * William Jolitz.
   8  *
   9  *      form: @(#)lptreg.h      1.1 (Berkeley) 12/19/90
  10  * $FreeBSD: src/sys/i386/isa/lptreg.h,v 1.7 1999/08/28 00:44:57 peter Exp $
  11  * $DragonFly: src/sys/platform/pc64/isa/lptreg.h,v 1.1 2008/08/29 17:07:19 dillon Exp $
  12  */
  13
  14 /*
  15  * AT Parallel Port (for lineprinter)
  16  * Interface port and bit definitions
  17  * Written by William Jolitz 12/18/90
  18  * Copyright (C) William Jolitz 1990
  19  */
  20
  21 #define lpt_data        0       /* Data to/from printer (R/W) */
  22
  23 #define lpt_status      1       /* Status of printer (R) */
  24 #define LPS_NERR                0x08    /* printer no error */
  25 #define LPS_SEL                 0x10    /* printer selected */
  26 #define LPS_OUT                 0x20    /* printer out of paper */
  27 #define LPS_NACK                0x40    /* printer no ack of data */
  28 #define LPS_NBSY                0x80    /* printer no ack of data */
  29
  30 #define lpt_control     2       /* Control printer (R/W) */
  31 #define LPC_STB                 0x01    /* strobe data to printer */
  32 #define LPC_AUTOL               0x02    /* automatic linefeed */
  33 #define LPC_NINIT               0x04    /* initialize printer */
  34 #define LPC_SEL                 0x08    /* printer selected */
  35 #define LPC_ENA                 0x10    /* enable IRQ */