#define steplad_width 16
#define steplad_height 16
static char steplad_bits[] = {
   0x00, 0x00, 0xfc, 0x3f, 0xfc, 0x3f, 0xa8, 0x19, 0xb8, 0x19, 0x28, 0x3f,
   0x1c, 0x33, 0x14, 0x33, 0x1c, 0x33, 0xf4, 0x7f, 0x1c, 0x66, 0x14, 0x66,
   0x0e, 0x66, 0x0a, 0xfc, 0x0e, 0xcc, 0x0a, 0xcc};