03, operands

Operand type:

1.Direct operand)Is a variable name, which represents the address of the variable.

2.Direct-offset operand (direct-offset operand)Is a variable name with an offset value, generate a new offset address, access the memory address without a label.

3. Indirect operand (indirect operand) is a register containing the data memory address, represented in brackets, such:[Esi]The program obtains the data of the memory address by unreferencing the address.

4. Index operand (index operand) is a constant that is combined with an indirect operand. constants and register values are added to get an address, for example:[Array + esi]OrArray [esi] 

 

Command:

INC: auto increment; DEC: auto increment; Add: Addition command; Sub: subtraction command;

Neg: calculates the complement of the operand in the format:Neg operand