NetBSD/sys/arch/i386/isa/pcvt/pcvt_vtf.h

60 lines
2.5 KiB
C

/* $NetBSD: pcvt_vtf.h,v 1.2 1994/10/27 04:19:04 cgd Exp $ */
/*
* Copyright (c) 1992,1993,1994 Hellmuth Michaelis, Brian Dunford-Shore
* and Joerg Wunsch.
*
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz and Don Ahn.
*
* 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 Hellmuth Michaelis,
* Brian Dunford-Shore and Joerg Wunsch.
* 4. The name authors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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.
*
*
* @(#)pcvt_vtf.h, 3.00, Last Edit-Date: [Sun Feb 27 18:47:30 1994]
*/
#define INT_BITS (sizeof(unsigned int) * 8)
#define INT_INDEX(n) ((n) / INT_BITS)
#define BIT_INDEX(n) ((n) % INT_BITS)
/*---------------------------------------------------------------------------*
* set selective attribute if appropriate
*---------------------------------------------------------------------------*/
static __inline void vt_selattr(struct video_state *svsp)
{
int i;
i = (svsp->Crtat + svsp->cur_offset) - svsp->Crtat;
if(svsp->selchar)
svsp->decsca[INT_INDEX(i)] |= (1 << BIT_INDEX(i));
else
svsp->decsca[INT_INDEX(i)] &= ~(1 << BIT_INDEX(i));
}