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Annotation of lucent/sys/src/9/pc/vga.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Generic VGA registers.
                      3:  */
                      4: enum {
                      5:        MiscW           = 0x03C2,       /* Miscellaneous Output (W) */
                      6:        MiscR           = 0x03CC,       /* Miscellaneous Output (R) */
                      7:        Status0         = 0x03C2,       /* Input status 0 (R) */
                      8:        Status1         = 0x03DA,       /* Input Status 1 (R) */
                      9:        FeatureR        = 0x03CA,       /* Feature Control (R) */
                     10:        FeatureW        = 0x03DA,       /* Feature Control (W) */
                     11: 
                     12:        Seqx            = 0x03C4,       /* Sequencer Index, Data at Seqx+1 */
                     13:        Crtx            = 0x03D4,       /* CRT Controller Index, Data at Crtx+1 */
                     14:        Grx             = 0x03CE,       /* Graphics Controller Index, Data at Grx+1 */
                     15:        Attrx           = 0x03C0,       /* Attribute Controller Index and Data */
                     16: 
                     17:        PaddrW          = 0x03C8,       /* Palette Address Register, write */
                     18:        Pdata           = 0x03C9,       /* Palette Data Register */
                     19:        Pixmask         = 0x03C6,       /* Pixel Mask Register */
                     20:        PaddrR          = 0x03C7,       /* Palette Address Register, read */
                     21:        Pstatus         = 0x03C7,       /* DAC Status (RO) */
                     22: 
                     23:        Pcolours        = 256,          /* Palette */
                     24:        Pred            = 0,
                     25:        Pgreen          = 1,
                     26:        Pblue           = 2,
                     27: };
                     28: 
                     29: #define vgai(port)             inb(port)
                     30: #define vgao(port, data)       outb(port, data)
                     31: 
                     32: extern int vgaxi(long, uchar);
                     33: extern int vgaxo(long, uchar, uchar);
                     34: 
                     35: /*
                     36:  * Definitions of known VGA controllers.
                     37:  */
                     38: typedef struct Vgac Vgac;
                     39: struct Vgac {
                     40:        char    *name;
                     41:        void    (*page)(int);
                     42: 
                     43:        Vgac*   link;
                     44: };
                     45: 
                     46: /*
                     47:  * Definition of known hardware graphics cursors.
                     48:  */
                     49: typedef struct Hwgc Hwgc;
                     50: struct Hwgc {
                     51:        char*   name;
                     52:        void    (*enable)(void);
                     53:        void    (*load)(Cursor*);
                     54:        int     (*move)(Point);
                     55:        void    (*disable)(void);
                     56: 
                     57:        Hwgc*   link;
                     58: };
                     59: 
                     60: extern void addvgaclink(Vgac*);
                     61: extern void addhwgclink(Hwgc*);
                     62: 
                     63: extern Hwgc *hwgc;
                     64: 
                     65: extern Lock palettelock;

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