| 释义 |
two-level addressing
二级编［寻，定］址法；［二阶定址］
An addressing method. The instruction address is the first level address, by which you can find the second level address, and the desired operand can be found by the second level address in the memory. In the two-level addressing, in order to get the desired operand, you need to call on the memory twice.
一种寻址和编址的方法，指令中所含的地址为一级地址，按一级地址在存储器中可找到二级地址，按二级地 址可找到所期望的操作数。在二级寻址中，为了得到所期望的操作数，需要两次访问存储器。 |