2007-09-09 14:21:54 +02:00
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/*
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* Copyright (c) 2007, Takahide Matsutsuka.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*
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*/
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/*
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* \file
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* Arcitecture-depend libconio module, which supposes
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* the machine has character VRAM and optional attribute VRAM
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2007-09-09 15:41:50 +02:00
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* on the main memory.
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2007-09-09 14:21:54 +02:00
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* \author
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* Takahide Matsutsuka <markn@markn.org>
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*/
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#ifndef __LIBCONIO_ARCH_H__
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#define __LIBCONIO_ARCH_H__
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#ifndef LIBCONIO_VRAM_CHAR
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#error "must specify vram address for characters!"
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#endif /* LIBCONIO_VRAM_CHAR */
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#ifdef LIBCONIO_CONF_ATTRIBUTES_ENABLED
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#ifndef LIBCONIO_VRAM_ATTR
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#error "must specify vram address for attributes!"
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#endif /* LIBCONIO_VRAM_ATTR */
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#endif /* LIBCONIO_CONF_ATTRIBUTES_ENABLED */
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#ifndef LIBCONIO_CONF_SCREEN_WIDTH
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#define LIBCONIO_CONF_SCREEN_WIDTH 32
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#endif /* LIBCONIO_CONF_SCREEN_WIDTH */
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#ifndef LIBCONIO_CONF_SCREEN_HEIGHT
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#define LIBCONIO_CONF_SCREEN_HEIGHT 16
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#endif /* LIBCONIO_CONF_SCREEN_HEIGHT */
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#ifndef LIBCONIO_COLOR_REVERSED
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#define LIBCONIO_COLOR_REVERSED 0x21
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#endif /* LIBCONIO_COLOR_REVERSED */
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#ifndef LIBCONIO_COLOR_NORMAL
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#define LIBCONIO_COLOR_NORMAL 0x20
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#endif /* LIBCONIO_COLOR_NORMAL */
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/*
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* An offset caluclation logic.
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* The default supposes the VRAM is sequential
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*/
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#ifndef LIBCONIO_VRAM_OFFSET
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#define LIBCONIO_VRAM_OFFSET(x, y) (y) * LIBCONIO_CONF_SCREEN_WIDTH + (x)
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#endif /* VRAM_OFFSET */
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/*
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* A maximum offset + 1.
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* If offset is equal or more than this maximum, the screen will scroll.
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*/
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#ifndef LIBCONIO_VRAM_OFFSET_MAX
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#define LIBCONIO_VRAM_OFFSET_MAX \
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(LIBCONIO_CONF_SCREEN_HEIGHT * LIBCONIO_CONF_SCREEN_WIDTH)
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#endif /* VRAM_MAX */
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#endif /* __LIBCONIO_ARCH_H__ */
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