What is the purpose of using different addressing methods in the instruction system
What this article shares with you is about the purpose of using different addressing methods in the instruction system. The editor thinks it is very practical, so I share it with you. I hope you can learn something after reading this article. Let's take a look at it with the editor.
The purpose of using different addressing methods in the instruction system is to "expand the addressing space and improve programming flexibility"; addressing refers to the way of finding operands or Operand addresses; the purpose of using different addressing methods in the instruction system is to find a balance between efficiency and convenience.
The purpose of using different addressing methods in the instruction system is to "expand the addressing space and improve the flexibility of programming".
Addressing refers to the way to find operands or Operand addresses.
The purpose of using different addressing methods in the instruction system is to find a balance between efficiency and convenience. Immediate number addressing and register addressing are the fastest in efficiency, but the number of registers is small, so it is impossible to store operands in them for use, and the use of immediate numbers is also very limited, so it is necessary to keep the data in memory. Then the data in memory is moved into the register by means of direct addressing, register indirect addressing, register relative addressing, base address plus indexed addressing, relative base addressing and indexed addressing.
Related introduction:
In memory, operands or instruction words are written or read, including address assignment mode, associated storage mode and stack access mode. Almost all computers use address assignment in memory. When an address is specified, the way in which an Operand or instruction address is formed is called addressing. Addressing methods are divided into two types, namely, instruction addressing and data addressing, the former is relatively simple, the latter is more complex. It is worth noting that in computers designed in the traditional way, the addressing of instructions in memory and the addressing of data are carried out alternately.
The above is the purpose of using different addressing methods in the instruction system. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.
