unsigned short* videoram = (unsigned short*)0xB8000;
int width = 80;
int height = 25;

void vgacon_init(){

}

void vgacon_clear(){
        memset (videoram, 0, (( width * height) * 2)); /* a VGA character is 16bits wide */
}

void vgacon_scroll(int lines){
        unsigned short size = lines * width;
        unsigned short *src = videoram + size;
        memcpy (videoram, src, ((width * height) - size)*2); /* a VGA character is 16bits wide */
        memset ((unsigned short*)videoram + ((width * height) - size), 0, (size * 2));
}

void vgacon_putc(unsigned short x, unsigned short y, unsigned short character, unsigned short attributes){
        unsigned short* where = videoram + ((width*x)+y);
        unsigned attr = attributes << 8;
        *where = character | attr;
}