#define mem_width 16
#define mem_height 16
static unsigned char mem_bits[] = {
   0x00, 0x00, 0x3e, 0x1f, 0x3e, 0x1f, 0x3e, 0x1f, 0x00, 0x00, 0x00, 0x00,
   0x3e, 0x1f, 0x3e, 0x1f, 0x3e, 0x1f, 0x00, 0x00, 0x00, 0x1f, 0x3e, 0x1f,
   0x3e, 0x00, 0x3e, 0x1f, 0x3e, 0x1f, 0x3e, 0x00};
