xref: /src/sys/arch/atari/dev/grfabs_tt.h

/*	$NetBSD: grfabs_tt.h,v 1.1.168.2 2010/03/11 15:02:09 yamt Exp $	*/

/*
 * Copyright (c) 1996 Leo Weppelman.
 * 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.
 */

#ifndef _GRFABS_TT_H
#define _GRFABS_TT_H

/*
 * Colormap related macro's
 */
#define CM_L2TT(v) \
    (((0x000f0000 & (v)) >> 8) | ((0x00000f00 & (v)) >> 4) |\
      (0x0000000f & (v)))
#define CM_TT2L(v) \
    ((((0x00000f00 & (v)) * 0xff / 0xf) << 8) |\
     (((0x000000f0 & (v)) * 0xff / 0xf) << 4) |\
       (0x0000000f & (v)) * 0xff / 0xf)

void tt_probe_video(MODES *);
#endif /*  _GRFABS_TT_H */