/*

SDL - Simple DirectMedia Layer

Copyright (C) 1997-2012 Sam Lantinga

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Library General Public

License as published by the Free Software Foundation; either

version 2 of the License, or (at your option) any later version.

This library 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

Library General Public License for more details.

You should have received a copy of the GNU Library General Public

License along with this library; if not, write to the Free

Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Sam Lantinga

slouken@libsdl.org

*/

#include "SDL_config.h"

/*

NOVA video card definitions

Patrice Mandin

*/

#ifndef _SDL_xbios_nova_h

#define _SDL_xbios_nova_h

/*--- Types ---*/

typedef struct {

unsigned char name[33]; /* Video mode name */

unsigned char dummy1;

unsigned short mode; /* Video mode type */

/* 0=4 bpp */

/* 1=1 bpp */

/* 2=8 bpp */

/* 3=15 bpp (little endian) */

/* 4=16 bpp (little endian) */

/* 5=24 bpp (BGR) */

/* 6=32 bpp (RGBA) */

unsigned short pitch; /* bpp<8: words/plane /line */

/* bpp>=8: bytes /line */

unsigned short planes; /* Bits per pixel */

unsigned short colors; /* Number of colours */

unsigned short hc_mode; /* Hardcopy mode */

/* 0=1 pixel screen -> 1x1 printer screen */

/* 1=1 pixel screen -> 2x2 printer screen */

/* 2=1 pixel screen -> 4x4 printer screen */

unsigned short max_x; /* Max x,y coordinates, values-1 */

unsigned short max_y;

unsigned short real_x; /* Real max x,y coordinates, values-1 */

unsigned short real_y;

unsigned short freq; /* Pixel clock */

unsigned char freq2; /* Another pixel clock */

unsigned char low_res; /* Half of pixel clock */

unsigned char r_3c2;

unsigned char r_3d4[25];

unsigned char extended[3];

unsigned char dummy2;

} nova_resolution_t;

/* cookie NOVA points to this */

typedef struct {

unsigned char version[4]; /* Version number */

unsigned char resolution; /* Resolution number */

unsigned char blnk_time; /* Time before blanking */

unsigned char ms_speed; /* Mouse speed */

unsigned char old_res;

/* Pointer to routine to change resolution */

void (*p_chres)(nova_resolution_t *nova_res, unsigned long offset);

unsigned short mode; /* Video mode type: */

/* 0=4 bpp */

/* 1=1 bpp */

/* 2=8 bpp */

/* 3=15 bpp (little endian) */

/* 4=16 bpp (little endian) */

/* 5=24 bpp (BGR) */

/* 6=32 bpp (RGBA) */

unsigned short pitch; /* bpp<8: bytes per plane, per line */

/* bpp>=8: bytes per line */

unsigned short planes; /* Bits per pixel */

unsigned short colours; /* Number of colours, unused */

unsigned short hc; /* Hardcopy mode */

/* 0=1 pixel screen -> 1x1 printer screen */

/* 1=1 pixel screen -> 2x2 printer screen */

/* 2=1 pixel screen -> 4x4 printer screen */

unsigned short max_x, max_y; /* Resolution, values-1 */

unsigned short rmn_x, rmx_x;

unsigned short rmn_y, rmx_y;

unsigned short v_top, v_bottom;

unsigned short v_left, v_right;

/* Pointer to routine to set colours */

void (*p_setcol)(unsigned short index, unsigned char *colors);

void (*chng_vrt)(unsigned short x, unsigned short y);

void (*inst_xbios)(unsigned short on);

void (*pic_on)(unsigned short on);

void (*chng_pos)(nova_resolution_t *nova_res, unsigned short direction, unsigned short offset);

void (*p_setscr)(void *adr); /* Pointer to routine to change screen address */

void *base; /* Address of screen #0 in video RAM */

void *scr_base; /* Adress of video RAM */

unsigned short scrn_cnt; /* Number of possible screens in video RAM */

unsigned long scrn_sze; /* Size of a screen */

void *reg_base; /* Video card I/O registers base */

void (*p_vsync)(void); /* Pointer to routine to vsync */

unsigned char name[36]; /* Video mode name */

unsigned long mem_size; /* Global size of video memory */

} nova_xcb_t;

#endif /* _SDL_xbios_nova_h */