sys/dev/ic/mc6845reg.h

   1 /* $NetBSD: mc6845reg.h,v 1.2.2.3 2004/09/21 13:28:04 skrll Exp $ */
   2
   3 /*
   4  * Copyright (c) 1998
   5  *      Matthias Drochner.  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
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  *
  27  */
  28
  29 struct reg_mc6845 { /* indexed via port 0x3d4 (mono 0x3b4) */
  30         u_int8_t htotal, hdisple, hblanks, hblanke;
  31         u_int8_t hsyncs, hsynce, vtotal, overfll;
  32         u_int8_t irowaddr, maxrow, curstart, curend;
  33         u_int8_t startadrh, startadrl, cursorh, cursorl;
  34         u_int8_t vsyncs, vsynce, vde, offset;
  35         u_int8_t uloc, vbstart, vbend, mode;
  36         u_int8_t splitl;
  37 };
  38
  39 #define MC6845_NREGS    25
  40 #define MC6845_INDEX    0x4
  41 #define MC6845_DATA     0x5