xref: /src/sys/dev/ic/mc6845reg.h

/* $NetBSD: mc6845reg.h,v 1.4 2005/12/11 12:21:27 christos Exp $ */

/*
 * Copyright (c) 1998
 *	Matthias Drochner.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

struct reg_mc6845 { /* indexed via port 0x3d4 (mono 0x3b4) */
	u_int8_t htotal, hdisple, hblanks, hblanke;
	u_int8_t hsyncs, hsynce, vtotal, overfll;
	u_int8_t irowaddr, maxrow, curstart, curend;
	u_int8_t startadrh, startadrl, cursorh, cursorl;
	u_int8_t vsyncs, vsynce, vde, offset;
	u_int8_t uloc, vbstart, vbend, mode;
	u_int8_t splitl;
};

#define MC6845_NREGS	25
#define MC6845_INDEX	0x4
#define MC6845_DATA	0x5