1 /* $NetBSD: mc6845reg.h,v 1.4 2005/12/11 12:21:27 christos 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 42
Indexes created Sat Sep 20 22:09:52 GMT 2025