If Buffer is NULL, then ASSERT().\r
If Buffer is not aligned on a 16-bit boundary, then ASSERT().\r
If Length is not aligned on a 16-bit boundary, then ASSERT().\r
If Buffer is NULL, then ASSERT().\r
If Buffer is not aligned on a 16-bit boundary, then ASSERT().\r
If Length is not aligned on a 16-bit boundary, then ASSERT().\r