load_16_be
#define UNSTORE16_INT(ptr, val) (val = load_16_be(ptr))
if (load_16_be(ptr) != 0x0504)
ec = load_16_be(ptr+4);
rrc = load_16_be(ptr+6);
if (load_16_be(althdr) != 0x0504
if (load_16_be(ptr) != 0x0404)
if (load_16_be(ptr) != 0x0405)