Special functions of 8086 registers.

AX:-
16 bit accumulator- Stores 16 bit result of certain arithmetic and logic operations.
BX:-
Base Register- Used to hold the base values in base addressing mode to access memory data.
CX:-
Count Register- Used to hold count value.
DX:-
Data Register- Used to hold data for multiplication and division.
SP:-
Stack Pointer- Used to hold offset address of top of stack memory.
BP:-
Base Pointer- Used to hold base value in base addressing.
SI:-
Source Index- Used to ho;d index value of source operand for string instructions.
DI:-
Destination Index- Used to hold index value of destination operand.

Posted in 8086 - Micoprocessor