// Driver implementation for Jank's text frame buffer

// Buffer can display 80 columns by 25 Rows
// Start of buffer is at (real)address 0x000B8000
// Memory at this section is divided into 16-bit cells 
    // | 15-8 | 7-4 | 0-3
    // | Asci | FG  | BG
// The following colors are available(from 0x0 to 0xF):
    // Black Blue Green Cyan Red Magenta 
    // Brown LightGrey DarkGrey LightBlue LightGreen
    // LightCyan LightRed LightMagenta LightBrown White

/*
enum typedef Colors{
    Black,
    Blue, 
    Green,
    Cyan,
    Red, 
    Magenta,
    Brown, 
    LightGrey,
    DarkGrey,
    LightBlue,
    LightGreen, 
    LightCyan,
    LightRed,
    LightMagenta,
    LightBrown,
    White,
};
*/
#include "framebuffer.h"

// page 24
static char* Frame_Buffer = (char*)0x000B8000;
// Writes character to a given cell in the framebuffer
    // Safety handled by caller function 
void write_cell(const unsigned cell, const char c, const char fg_bg) {
    Frame_Buffer[cell] = c;
    Frame_Buffer[cell+1] = fg_bg;
}

void colors() {
    // finding what the fucking colors are that we can draw
    unsigned char color = 0x00;
    for(int i =0;i<0x20;i++) {
        Frame_Buffer[i] = 'a';
        Frame_Buffer[i+1] = color;
        color++;
    }
}