ref: 41e27b2d10c6a60c49931332e8677438736a1e36
dir: /os/pc/vga.h/
/* * Generic VGA registers. */ enum { MiscW = 0x03C2, /* Miscellaneous Output (W) */ MiscR = 0x03CC, /* Miscellaneous Output (R) */ Status0 = 0x03C2, /* Input status 0 (R) */ Status1 = 0x03DA, /* Input Status 1 (R) */ FeatureR = 0x03CA, /* Feature Control (R) */ FeatureW = 0x03DA, /* Feature Control (W) */ Seqx = 0x03C4, /* Sequencer Index, Data at Seqx+1 */ Crtx = 0x03D4, /* CRT Controller Index, Data at Crtx+1 */ Grx = 0x03CE, /* Graphics Controller Index, Data at Grx+1 */ Attrx = 0x03C0, /* Attribute Controller Index and Data */ PaddrW = 0x03C8, /* Palette Address Register, write */ Pdata = 0x03C9, /* Palette Data Register */ Pixmask = 0x03C6, /* Pixel Mask Register */ PaddrR = 0x03C7, /* Palette Address Register, read */ Pstatus = 0x03C7, /* DAC Status (RO) */ Pcolours = 256, /* Palette */ Pred = 0, Pgreen = 1, Pblue = 2, Pblack = 0x00, Pwhite = 0xFF, }; #define vgai(port) inb(port) #define vgao(port, data) outb(port, data) extern int vgaxi(long, uchar); extern int vgaxo(long, uchar, uchar); typedef struct Cursor Cursor; struct Cursor { Point offset; uchar clr[2*16]; uchar set[2*16]; }; /* * First pass at tidying this up... */ typedef struct Mode { int x; int y; int d; ulong aperture; /* this is a physical address */ int apsize; int apshift; } Mode; /* * Definitions of known VGA controllers. */ typedef struct Vgac Vgac; struct Vgac { char* name; void (*page)(int); void (*init)(Mode*); int (*ident)(void); void (*enable)(void); void (*disable)(void); void (*move)(int, int); void (*load)(Cursor*); Vgac* link; }; extern void addvgaclink(Vgac*);