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/* *****************************************************************************
* clear_vram.c -- Clear the VRAM.
* Copyright (C) 2011 Pierre "PierrotLL" Le Gall <legallpierre89@gmail.com>
* Copyright (C) 2016-2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
*
* This file is part of libcarrot.
* libcarrot is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 3.0 of the License,
* or (at your option) any later version.
*
* libcarrot is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the libcarrot; if not, see <http://www.gnu.org/licenses/>.
* ************************************************************************** */
#include <monochrome.h>
void ML_clear_vram()
{
int i, end, *pointer_long, vram;
char *pointer_byte;
vram = (int)ML_vram_adress();
end = 4-vram&3;
pointer_byte = (char*)vram;
for(i=0 ; i<end ; i++) pointer_byte[i] = 0;
pointer_long = (int*) (vram+end);
for(i=0 ; i<255 ; i++) pointer_long[i] = 0;
pointer_byte += 1020+end;
end = vram&3;
for(i=0 ; i<end ; i++) pointer_byte[i] = 0;
}
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