video.h

早期freebsd实现

/*-
 * Copyright (c) 1988, 1993
 *	The Regents of the University of California.  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.
 * 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.
 *
 *	@(#)video.h	8.1 (Berkeley) 6/6/93
 */

/*
 * This is a header file describing the interface via int 10H to the
 * video subsystem.
 */

#define	BIOS_VIDEO	0x10

typedef enum {
    SetMode = 0,
    SetCursorType,
    SetCursorPosition,
    ReadCursorPosition,
    ReadLightPenPosition,
    SelectActiveDisplayPage,
    ScrollActivePageUp,
    ScrollActivePageDown,
    ReadAttribute_Character,
    WriteAttribute_Character,
    WriteCharacterOnly,
    SetColorPalette,
    WriteDot,
    ReadDot,
    WriteTeletypeToActivePage,
    CurrentVideoState,
    Reserved16,
    Reserved17,
    Reserved18,
    WriteString
} VideoOperationsType;

typedef enum {
    bw_40x25 = 0,
    color_40x25,
    bw_80x25,
    color_80x25,
    color_320x200,
    bw_320x200,
    bw_640x200,
    internal_bw_80x25
} VideoModeType;