Accessing variables in 8086 Assembly Language

 Consider following set of variables declared

Num dw 0x98AD

Num2 dw 0x562B

Num3 dw 0x127A

To access data from these variables, we can use any of three variables (Num, Num2, Num3) as pointer to the memory and access all data by adding or subtracting offset values to the addresses. 

For instance, if you have address of Num2 and you want to access other values using this address as pointer, we can use following instructions;

Mov ax, [Num2];. AX=562B

Mov bx, [Num2+2];. BX=127A

Mov cx, [Num2-2];. AX=98AD

Mov dx, [Num2+1];. AX=7A56

In a similar way, we can use other variables as pointers and access any memory location.