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Annotation of Gnu-Mach/chips/screen_defs.h, revision 1.1

1.1     ! root        1: /* 
        !             2:  * Mach Operating System
        !             3:  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
        !             4:  * All Rights Reserved.
        !             5:  * 
        !             6:  * Permission to use, copy, modify and distribute this software and its
        !             7:  * documentation is hereby granted, provided that both the copyright
        !             8:  * notice and this permission notice appear in all copies of the
        !             9:  * software, derivative works or modified versions, and any portions
        !            10:  * thereof, and that both notices appear in supporting documentation.
        !            11:  * 
        !            12:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            13:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            14:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            15:  * 
        !            16:  * Carnegie Mellon requests users of this software to return to
        !            17:  * 
        !            18:  *  Software Distribution Coordinator  or  [email protected]
        !            19:  *  School of Computer Science
        !            20:  *  Carnegie Mellon University
        !            21:  *  Pittsburgh PA 15213-3890
        !            22:  * 
        !            23:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            24:  * the rights to redistribute these changes.
        !            25:  */
        !            26: /*
        !            27:  *     File: screen_defs.h
        !            28:  *     Author: Alessandro Forin, Carnegie Mellon University
        !            29:  *     Date:   11/90
        !            30:  *
        !            31:  *     Definitions for the Generic Screen Driver.
        !            32:  */
        !            33: 
        !            34: #include <chips/screen.h>
        !            35: #include <chips/screen_switch.h>
        !            36: #include <device/device_types.h>
        !            37: 
        !            38: /*
        !            39:  * Driver state
        !            40:  */
        !            41: typedef struct screen_softc {
        !            42:        user_info_t             *up;
        !            43:        char                    **hw_state;     /* semi-opaque */
        !            44: 
        !            45:        struct screen_switch    sw;
        !            46: 
        !            47:        /* should also be a switch */
        !            48:        io_return_t             (*kbd_set_status)();
        !            49:        int                     (*kbd_reset)();
        !            50:        int                     (*kbd_beep)();
        !            51: 
        !            52:        char                    flags;
        !            53:        char                    mapped;
        !            54:        char                    blitc_state;
        !            55:        char                    standout;
        !            56:        short                   save_row;
        !            57:        short                   save_col;
        !            58:        /*
        !            59:         * Eventually move here all that is Kdep in the user structure,
        !            60:         * to avoid crashing because of a bogus graphic server
        !            61:         */
        !            62:        short           frame_scanline_width;   /* in pixels */
        !            63:        short           frame_height;           /* in scanlines */
        !            64:        short           frame_visible_width;    /* in pixels */
        !            65:        short           frame_visible_height;   /* in pixels */
        !            66: 
        !            67: /* This is used by all screens, therefore it is sized maximally */
        !            68: #      define MaxCharRows      68      /* 2DA screen & PMAG-AA */
        !            69: #      define MaxCharCols      160     /* PMAG-AA */
        !            70: #      define MinCharRows      57      /* pmax */
        !            71:        unsigned char           ascii_screen[MaxCharRows*MaxCharCols];
        !            72: 
        !            73: } *screen_softc_t;
        !            74: 
        !            75: extern screen_softc_t  screen(/* int unit */);
        !            76: 
        !            77: /*
        !            78:  * This global says if we have a graphic console
        !            79:  * and where it is and if it is enabled
        !            80:  */
        !            81: extern short   screen_console;
        !            82: #define SCREEN_CONS_ENBL       (0x0100)
        !            83: #define        SCREEN_ISA_CONSOLE()    (screen_console & SCREEN_CONS_ENBL)
        !            84: #define SCREEN_CONS_UNIT()     (screen_console & 0x00ff)
        !            85: 
        !            86: /*
        !            87:  * A graphic screen needs a keyboard and a mouse/tablet
        !            88:  */
        !            89: #define        SCREEN_LINE_KEYBOARD    0
        !            90: #define        SCREEN_LINE_POINTER     1
        !            91: #define        SCREEN_LINE_OTHER       (-1)
        !            92: 
        !            93: /* kernel font */
        !            94: #define KfontWidth     8
        !            95: #define KfontHeight    15
        !            96: extern unsigned char kfont_7x14[];
        !            97: 

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