How many types of registers are there in 8086?

How many types of registers are there in 8086?

In the 8086 Microprocessor, the registers are categorized into mainly four types: General Purpose Registers. Segment Registers. Pointers and Index Registers.

What are the pointer and index registers used in 8086?

– Stack pointer and base pointer are the two pointer registers whereas the Source index and Destination index are the index group of registers. – They are primarily used to store relative to segment registers the locations of offset addresses of memory locations. They serve the purpose of being memory pointers.

What is the base pointer?

The base pointer is conventionally used to mark the start of a function’s stack frame, or the area of the stack managed by that function. Local variables are stored below the base pointer and above the stack pointer.

What are pointers in 8086 microprocessor?

3) Pointers and Index Registers. The pointers will always store some address or memory location. In 8086 Microprocessor, they usually store the offset through which the actual address is calculated. Instruction Pointer (IP): The instruction pointer usually stores the address of the next instruction that is to be executed.

What are general purpose registers in 8086 microprocessor?

General purpose registers are used to store temporary data within the microprocessor. There are 8 general purpose registers in 8086 microprocessor. Figure – General purpose registers. AX – This is the accumulator. It is of 16 bits and is divided into two 8-bit registers AH and AL to also perform 8-bit instructions.

What is the function of the accumulator in 8086?

This is the accumulator. It is 16-bit registers, but it is divided into two 8-bit registers. These registers are AH and AL. AX generally used for arithmetic or logical instructions, but it is not mandatory in 8086.

What is the difference between pointers and index registers?

Briefly explain the Pointers and Index group of registers. – Stack pointer and base pointer are the two pointer registers whereas the Source index and Destination index are the index group of registers. – They are primarily used to store relative to segment registers the locations of offset addresses of memory locations.