grf_hyreg.h

早期freebsd实现

/*
 * Copyright (c) 1991 University of Utah.
 * Copyright (c) 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department and Mark Davies of the Department of Computer
 * Science, Victoria University of Wellington, New Zealand.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
 *
 * from: Utah $Hdr: grf_hyreg.h 1.1 92/01/22$
 *
 *	@(#)grf_hyreg.h	8.1 (Berkeley) 6/10/93
 */

#include <hp/dev/iotypes.h>	/* XXX */

struct hyboxfb {
  u_char 	:8;
  vu_char 	reset;			/* reset register		0x01 */
  vu_char	fb_address;		/* frame buffer address 	0x02 */
  vu_char	interrupt;		/* interrupt register		0x03 */
  u_char	:8;
  vu_char	fbwmsb;			/* frame buffer width MSB	0x05 */
  u_char	:8;
  vu_char	fbwlsb;			/* frame buffer width MSB	0x07 */
  u_char	:8;
  vu_char	fbhmsb;			/* frame buffer height MSB	0x09 */
  u_char	:8;
  vu_char	fbhlsb;			/* frame buffer height MSB	0x0b */
  u_char	:8;
  vu_char	dwmsb;			/* display width MSB		0x0d */
  u_char	:8;
  vu_char	dwlsb;			/* display width MSB		0x0f */
  u_char	:8;
  vu_char	dhmsb;			/* display height MSB		0x11 */
  u_char	:8;
  vu_char	dhlsb;			/* display height MSB		0x13 */
  u_char	:8;
  vu_char	fbid;			/* Scondary frame buffer id	0x15 */
  u_char	:8;
  vu_char	bits;			/* square(0)/double-high(1) 	0x17 */
  u_char	f1[0x5b-0x17-1];
  vu_char	num_planes;		/* number of color planes       0x5b */
  u_char	:8;
  vu_char	fbomsb;			/* frame buffer offset MSB	0x5d */
  u_char	:8;
  vu_char	fbolsb;			/* frame buffer offset LSB	0x5f */
  u_char	f2[0x4000-0x5f-1];
  vu_char	nblank;			/* display enable planes      0x4000 */
};