search_for_sig
static int search_for_sig(u_int32_t target, int count);
if ((x = search_for_sig(target, 1024 / 4)) >= 0)
if ((x = search_for_sig(target, 1024 / 4)) >= 0)
if ((x = search_for_sig(target, BIOS_COUNT)) >= 0)
if ((x = search_for_sig(639 * 1024, 1024 / 4)) >= 0)