printk.h

用于汇编领域的,运用于OS的MAIN函数.基于硬件基础的源代码

#ifndef __LIB_PRINTK_H_
#define __LIB_PRINTK_H_

#define BLACK	0
#define BLUE	1
#define GREEN	2
#define CYAN	3
#define RED	4
#define MAGENTA	5
#define AMBER	6
#define GRAY	7
#define	BRIGHT	8
#define ATTRIB(bg, fg)	((fg)|((bg)<<4))

#define NUMCOLS	80
#define NUMROWS	25
#define TABWIDTH	8

#define VIDEO_MEM	((unsigned char *) 0xB8000)
#define CRT_ADDR_REG	0x3D4
#define CRT_DATA_REG	0x3D5
#define CRT_CURSOR_LOC_HIGH_REG	0x0E
#define CRT_CURSOR_LOC_LOW_REG	0x0F

void init_screen(void);
void clear_screen(void);
void get_cursor(int *row, int *col);
void put_cursor(int row, int col);
unsigned char get_current_attr(void);
void set_current_attr(unsigned char attrib);
void put_char(int c);
void put_string(const char *s);
void printk(const char *fmt, ...);

#endif	// PRINTK_H