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/*
* Mach Operating System
* Copyright (c) 1991,1990,1989 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* File: screen_defs.h
* Author: Alessandro Forin, Carnegie Mellon University
* Date: 11/90
*
* Definitions for the Generic Screen Driver.
*/
#include <chips/screen.h>
#include <chips/screen_switch.h>
#include <device/device_types.h>
/*
* Driver state
*/
typedef struct screen_softc {
user_info_t *up;
char **hw_state; /* semi-opaque */
struct screen_switch sw;
/* should also be a switch */
io_return_t (*kbd_set_status)();
int (*kbd_reset)();
int (*kbd_beep)();
char flags;
char mapped;
char blitc_state;
char standout;
short save_row;
short save_col;
/*
* Eventually move here all that is Kdep in the user structure,
* to avoid crashing because of a bogus graphic server
*/
short frame_scanline_width; /* in pixels */
short frame_height; /* in scanlines */
short frame_visible_width; /* in pixels */
short frame_visible_height; /* in pixels */
/* This is used by all screens, therefore it is sized maximally */
# define MaxCharRows 68 /* 2DA screen & PMAG-AA */
# define MaxCharCols 160 /* PMAG-AA */
# define MinCharRows 57 /* pmax */
unsigned char ascii_screen[MaxCharRows*MaxCharCols];
} *screen_softc_t;
extern screen_softc_t screen(/* int unit */);
/*
* This global says if we have a graphic console
* and where it is and if it is enabled
*/
extern short screen_console;
#define SCREEN_CONS_ENBL (0x0100)
#define SCREEN_ISA_CONSOLE() (screen_console & SCREEN_CONS_ENBL)
#define SCREEN_CONS_UNIT() (screen_console & 0x00ff)
/*
* A graphic screen needs a keyboard and a mouse/tablet
*/
#define SCREEN_LINE_KEYBOARD 0
#define SCREEN_LINE_POINTER 1
#define SCREEN_LINE_OTHER (-1)
/* kernel font */
#define KfontWidth 8
#define KfontHeight 15
extern unsigned char kfont_7x14[];
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