4 #define VGA_TEXT_ADDR (void *)0xb8000
5 #define VGA_TEXT_WIDTH 80
6 #define VGA_TEXT_HEIGHT 25
8 extern unsigned int scr_BytesPerLine
;
9 extern unsigned int scr_BytesPerPix
;
11 extern unsigned int scr_XPos
;
12 extern unsigned int scr_YPos
;
14 extern const unsigned int fontWidth
;
15 extern const unsigned int fontHeight
;
16 extern const unsigned char fontData
[];