code.delx.au - gnu-emacs/blob - test/etags/cp-src/screen.hpp

   1 /* ======================================================================= */
   2 /*                                 SCREEN.H                                */
   3 /* ======================================================================= */
   4
   5 // This stuff is entirely non-portable MSDOS-ish code. Note the hardware
   6 // address below, for the standard location of the EGA video buffer.
   7
   8 #if !defined(__COLORS)
   9 #define __COLORS
  10
  11 enum COLORS {
  12     BLACK,          /* dark colors */
  13     BLUE,
  14     GREEN,
  15     CYAN,
  16     RED,
  17     MAGENTA,
  18     BROWN,
  19     LIGHTGRAY,
  20     DARKGRAY,       /* light colors */
  21     LIGHTBLUE,
  22     LIGHTGREEN,
  23     LIGHTCYAN,
  24     LIGHTRED,
  25     LIGHTMAGENTA,
  26     YELLOW,
  27     WHITE
  28 };
  29 #endif
  30
  31 #define SCREEN_FP(x,y) \
  32     ((char far *) (0xB8000000L | ((unsigned) (160 * (y) + 2 * (x)))))
  33 #define SCREEN_START   SCREEN_FP(0, 0)
  34
  35 void goto_xy(unsigned char x, unsigned char y);
  36 void hide_cursor(void);
  37 void cursor_position(void);
  38 void clear_screen(void);
  39 void write_xyc(int x, int y, char c);