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Annotation of Net2/arch/amiga/dev/grf_ccreg.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Driver for custom chips display.
        !             3:  */
        !             4: 
        !             5: /* this is a mere collection of data, the registers itself are in the
        !             6:    custom chip area */
        !             7: 
        !             8: struct ccfb {
        !             9:   int          disp_width;
        !            10:   int          disp_height;
        !            11:   int          disp_x, disp_y;         /* this defines the dimension and
        !            12:                                           relative position of the display. */
        !            13:   int          disp_z;                 /* display depth */
        !            14: 
        !            15:   u_char       *fb;                    /* frame buffer, ie. block in chipmem
        !            16:                                           containing bitplane(s) */
        !            17:   int          fb_width;
        !            18:   int          fb_height;              /* dimension of the framebuffer. Can
        !            19:                                           be larger than the display! */
        !            20:   int          fb_x, fb_y;             /* offset of the framebuffer relative
        !            21:                                           to the display (disp_*) values */
        !            22:   int          fb_z;                   /* frame buffer depth */
        !            23: 
        !            24:   u_short      col[16];                /* color palette */
        !            25:   
        !            26:   u_short      bplstart_off;           /* offset in copperlist where the bitplane
        !            27:                                           start is set. This is used for smooth
        !            28:                                           scrolling of oversized framebuffers */
        !            29:   u_short       *cop1, *cop2;           /* both copperlists */
        !            30: };
        !            31: 
        !            32: 
        !            33: /* these are the initial values for changeable parameters: */
        !            34: #define        DEF_DISP_WIDTH          640
        !            35: #define DEF_DISP_HEIGHT                400
        !            36: #define DEF_DISP_X             258     /* "" */
        !            37: #define DEF_DISP_Y             88      /* hardware preferred values.. */
        !            38: #define DEF_FB_X               0
        !            39: #define DEF_FB_Y               0
        !            40: #define DEF_COL0               0x123
        !            41: #define DEF_COL1               0xccc
        !            42:        
        !            43: /* these are currently not changeable easily (would require reallocation
        !            44:    of display memory and rebuild of copperlists. Do this later perhaps) */
        !            45: #define DEF_FB_WIDTH           1024
        !            46: #define DEF_FB_HEIGHT          1024
        !            47: #define DEF_FB_Z               1
        !            48: #define DEF_DISP_Z             1

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