cfenollosa_os-tutorial/21-shell/drivers/screen.h

#ifndef SCREEN_H
#define SCREEN_H

#include "../cpu/types.h"

#define VIDEO_ADDRESS 0xb8000
#define MAX_ROWS 25
#define MAX_COLS 80
#define WHITE_ON_BLACK 0x0f
#define RED_ON_WHITE 0xf4

/* Screen i/o ports */
#define REG_SCREEN_CTRL 0x3d4
#define REG_SCREEN_DATA 0x3d5

/* Public kernel API */
void clear_screen();
void kprint_at(char *message, int col, int row);
void kprint(char *message);
void kprint_backspace();

#endif
lesson 21, keyboard input and shell 2015-03-20 18:20:44 +00:00			`#ifndef SCREEN_H`
			`#define SCREEN_H`

Fixed warnings 2015-03-23 15:08:34 +00:00			`#include "../cpu/types.h"`

lesson 21, keyboard input and shell 2015-03-20 18:20:44 +00:00			`#define VIDEO_ADDRESS 0xb8000`
			`#define MAX_ROWS 25`
			`#define MAX_COLS 80`
			`#define WHITE_ON_BLACK 0x0f`
			`#define RED_ON_WHITE 0xf4`

			`/* Screen i/o ports */`
			`#define REG_SCREEN_CTRL 0x3d4`
			`#define REG_SCREEN_DATA 0x3d5`

			`/* Public kernel API */`
			`void clear_screen();`
			`void kprint_at(char *message, int col, int row);`
			`void kprint(char *message);`
			`void kprint_backspace();`

			`#endif`