Untitled_Kernel/include/vga.h

/*  vga.h
 *  VGA
 *
 *  Responsible for VGA buffer control.
 */
#ifndef VGA_H
#define VGA_H
#define VGA_GRID_COLS 80
#define VGA_GRID_ROWS 25
#include <stdint.h>
#include <stdarg.h>

/*
 * CONSTANTS AND VARIABLES
 */

//Information on the VGA buffer

extern volatile uint16_t* const vga_buffer;

//grid is top left origin. This is our cursor!
extern int cursor_col;
extern int cursor_row;
extern uint16_t vga_attributes; // Black background, White foreground


/*
 * Functions
 */

//Clear the VGA buffer
void vga_clear();
//Put a character in the VGA buffer and move the cursor to the right by one
void vga_set_attributes(uint8_t attributes);
//Write character c to cursor
//Implements IO generic ASCII output
int vga_out(char c);


#endif