vulcanos/kernel/drivers/tty.h

62 lines
1.3 KiB
C

/**************************************
* iceOS Kernel *
* Developed by Marco 'icebit' Cetica *
* (c) 2019 *
* Released under GPLv3 *
* https://github.com/ice-bit/iceOS *
***************************************/
#ifndef _TTY_H_
#define _TTY_H_
#include <stdint.h>
// TODO: write something about Frame Buffer
// VGA colors
enum TTY_COLORS {
BLACK, // 0
BLUE,
GREEN,
CYAN,
RED,
MAGENTA,
BROWN,
LIGHT_GREY,
DARK_GREY,
LIGHT_BLUE,
LIGHT_GREEN,
LIGHT_CYAN,
LIGHT_RED,
LIGHT_MAGENTA,
LIGHT_BROWN,
WHITE // 15
};
/* Framebuffer properties */
#define VIDEO_MEM_ADDR 0x000B8000 // frame buffer address
#define VGA_WIDTH 80
#define VGA_HEIGHT 25
/* VGA I/O ports */
#define VGA_CMD_PORT 0x3D4
#define VGA_DATA_PORT 0x3D5
/* VGA I/O ports commands */
#define VGA_HIGH_BYTE 14
#define VGA_LOW_BYTE 15
/* Kernel's VGA API */
void write_cell(int16_t i, uint8_t c, uint8_t fg, uint8_t bg);
void move_cursor(uint16_t pos);
void cursor_adv();
void backspace();
void kprint_c(uint8_t *buf, uint32_t len, uint8_t fg, uint8_t bg);
void kprint(uint8_t *buf);
void init_prompt();
void clear_prompt();
void clear_row(uint8_t row);
void scroll(); // Scroll one row
void newline();
#endif