mirror of
https://github.com/cfenollosa/os-tutorial.git
synced 2024-10-27 20:34:19 +00:00
21 lines
399 B
C
21 lines
399 B
C
|
#ifndef SCREEN_H
|
||
|
|
#define SCREEN_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
|