#define rockgen_width 16
#define rockgen_height 16
static char rockgen_bits[] = {
   0x00, 0x00, 0xfe, 0x7f, 0xc6, 0x7f, 0x92, 0x7f, 0x8a, 0x7f, 0x82, 0x7f,
   0xc6, 0x7f, 0xfe, 0x7f, 0xfe, 0x7f, 0xfe, 0x7f, 0xfe, 0x7d, 0xfe, 0x7d,
   0xfe, 0x78, 0xfe, 0x7d, 0xfe, 0x7f, 0x00, 0x00};