nes-proj/cpu/z80/lib/libconio_z80.h
2007-09-19 12:48:26 +00:00

89 lines
3.0 KiB
C

/*
* Copyright (c) 2007, Takahide Matsutsuka.
* 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. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* 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.
*
* $Id: libconio_z80.h,v 1.1 2007/09/19 12:48:26 matsutsuka Exp $
*
*/
/*
* \file
* Arcitecture-depend libconio module, which supposes
* the machine has character VRAM and optional attribute VRAM
* on the main memory.
* \author
* Takahide Matsutsuka <markn@markn.org>
*/
#ifndef __LIBCONIO_ARCH_H__
#define __LIBCONIO_ARCH_H__
#ifndef LIBCONIO_VRAM_CHAR
#error "must specify vram address for characters!"
#endif /* LIBCONIO_VRAM_CHAR */
#ifdef LIBCONIO_CONF_ATTRIBUTES_ENABLED
#ifndef LIBCONIO_VRAM_ATTR
#error "must specify vram address for attributes!"
#endif /* LIBCONIO_VRAM_ATTR */
#endif /* LIBCONIO_CONF_ATTRIBUTES_ENABLED */
#ifndef LIBCONIO_CONF_SCREEN_WIDTH
#define LIBCONIO_CONF_SCREEN_WIDTH 32
#endif /* LIBCONIO_CONF_SCREEN_WIDTH */
#ifndef LIBCONIO_CONF_SCREEN_HEIGHT
#define LIBCONIO_CONF_SCREEN_HEIGHT 16
#endif /* LIBCONIO_CONF_SCREEN_HEIGHT */
#ifndef LIBCONIO_COLOR_REVERSED
#define LIBCONIO_COLOR_REVERSED 0x21
#endif /* LIBCONIO_COLOR_REVERSED */
#ifndef LIBCONIO_COLOR_NORMAL
#define LIBCONIO_COLOR_NORMAL 0x20
#endif /* LIBCONIO_COLOR_NORMAL */
/*
* An offset caluclation logic.
* The default supposes the VRAM is sequential
*/
#ifndef LIBCONIO_VRAM_OFFSET
#define LIBCONIO_VRAM_OFFSET(x, y) (y) * LIBCONIO_CONF_SCREEN_WIDTH + (x)
#endif /* VRAM_OFFSET */
/*
* A maximum offset + 1.
* If offset is equal or more than this maximum, the screen will scroll.
*/
#ifndef LIBCONIO_VRAM_OFFSET_MAX
#define LIBCONIO_VRAM_OFFSET_MAX \
(LIBCONIO_CONF_SCREEN_HEIGHT * LIBCONIO_CONF_SCREEN_WIDTH)
#endif /* VRAM_MAX */
#endif /* __LIBCONIO_ARCH_H__ */