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);