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Annotation of Net2/arch/amiga/dev/grf_ccreg.h, revision 1.1.1.1

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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