Assembly language addressing mode

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Immediate addressing

1. Definition ： The addressing method of the source operand immediate is called immediate addressing .

2. example

   mov ax,5
   

Direct addressing

1. Definition ： From memory according to the address （ Memory ） Looking for data in .

2. example

   mov ax,a
   

Register addressing

Go directly to the register to find data according to the register name .

Register indirection

1. adopt lea Store the address in the register , Re pass [ register ] Find the data in the address , This method is called register indirection , Indirect addressing for short .
2. Available registers include ：BX、BP、SI、DI Only the above 4 individual , Nothing else .