// File: kernel.c
// SoraOS Kernel - Main entry point

// INFO:
// 0xA0000 for EGA/VGA graphics modes (64 KB)
// 0xB0000 for monochrome text mode (32 KB)
// 0xB8000 for color text mode and CGA-compatible graphics modes (32 KB)

#include "colors.h"


/*
static void __put_char(char c, unsigned char color) {
	volatile unsigned short *vga = (volatile unsigned short *)0xB8000;

	static int line = 0;
	static int column = 2;

	if (line >= 16) {
		column += 3;
		line = 0;
	}

	line++;

	vga[line * 80 + 0 + column] = (0x2F << 8) | line; // White color
	vga[line * 80 + 1 + column] = (color << 8) | c;   // White color
}
*/

void kmain(void) {
	__clear_screen();

	_VGA Char;
	Char.codepoint = 'T';
	Char.color = (WHITE << 4) | BLACK;

	_VGA_screen_space Space;
	Space.column = 2;
	Space.line = 7;

	__put_char_VGA_POS(Char, Space, 1);

    Space.line = 4;
    Space.column = 3;

	__put_char_VGA_POS(Char, Space, 0);

	// Infinite loop
	while (1) {
		__asm__ volatile("hlt");
	}
}