For example, that these two length fields are equal.

例如，这两个长度字段是相等的。

And the transfer never completes because we just tell the boot ROM with that length field that we want to send, I don't know, 20 kilobytes of data.

传输永远不会完成，因为我们只是用我们要发送的长度字段告诉引导 ROM，我不知道，20 KB 的数据。