WordAddress Format is mostly used. In this format, each element of information is prefixed by a letter. And the controller conveys the letter to a particular register.
字地址格式最常用。在这种格式中，每个信息元素前面带有一个字母。控制器将这个字母转到特定寄存器。
2
This word was used in the old days to address one's superiors.
这个词是旧时下对上的称呼。
《新英汉大辞典》
3
When the PPE writes a data word to that address, the SPU can read from its corresponding mailbox read channels.