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#ifndef _VGA_H_
#define _VGA_H_
#include <stdint.h>
#include <stddef.h>
class VGA
{
public:
static constexpr int VGA_WIDTH = 80;
static constexpr int VGA_HEIGHT = 25;
static constexpr uint16_t* VGA_MEMORY = reinterpret_cast<uint16_t*>(0xb8000);
enum vga_colors {
VGA_COLOR_BLACK,
VGA_COLOR_BLUE,
VGA_COLOR_GREEN,
VGA_COLOR_CYAN,
VGA_COLOR_RED,
VGA_COLOR_MAGENTA,
VGA_COLOR_BROWN,
VGA_COLOR_LIGHT_GREY,
VGA_COLOR_DARK_GREY,
VGA_COLOR_LIGHT_BLUE,
VGA_COLOR_LIGHT_GREEN,
VGA_COLOR_LIGHT_CYAN,
VGA_COLOR_LIGHT_RED,
VGA_COLOR_LIGHT_MAGENTA,
VGA_COLOR_LIGHT_BROWN,
VGA_COLOR_WHITE,
};
static uint8_t vga_entry_color(enum vga_colors fg, enum vga_colors bg)
{
return fg | bg << 4;
}
static uint16_t vga_entry(unsigned char uc, uint8_t color)
{
return (uint16_t) uc | (uint16_t) color << 8;
}
};
#endif
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