Direct addressing and immediate addressing mode , Computer Engineering

Assignment Help:

Direct Addressing and  Immediate Addressing mode - computer architecture:

 Immediate Addressing:

It is the simplest form of addressing. Here, the operand is itself given in the instruction. This mode is used to define constant or set primary values of variables. The benefit of this mode is that no memory reference rather than instruction fetch is needed to obtain operand. The disadvantage of it is that the size of the number is restricted to the size of the address field, in which most of the instruction sets is small compared to word length.

Direct Addressing:

Effective address of the operand is given in the address field of the instruction in the case of direct addressing mode. It need one memory reference to read the operand from the given location and provides only a restricted address space. Length of the address field is typically less than the word length.

For Example: Move P, Ro, Add Q, Ro P and Q are the address of operand. Indirect 

 

 


Related Discussions:- Direct addressing and immediate addressing mode

Biscuit factory circuit, Biscuits move on a conveyer through an oven where ...

Biscuits move on a conveyer through an oven where they are cooked.   Two sensors, H and C, measure the temperature of the oven, H = 1 if the oven is too hot and C = 1 if the ove

How do the registers help in instruction execution, Q. How do the registers...

Q. How do the registers help in instruction execution? We will discuss this in following steps: Step 1: First step of instruction execution is to fetch instruction which

Determine maximum possible time of 4-bit synchronous counter, A 4-bit synch...

A 4-bit synchronous counter uses flip-flops with propagation delay times of 15 ns each.  The maximum possible time required for change of state will be ? Ans. 15 ns since in sy

What is insertion sort, What is insertion sort? Insertion Sort : One o...

What is insertion sort? Insertion Sort : One of the easiest sorting algorithms is the insertion sort. Insertion sort having of n - 1 passes. For pass p = 2 by  n, insertion so

Explain height of a tree, Height of a tree The length of the longest pa...

Height of a tree The length of the longest path from root to any node is called as the height of the tree.

Describe about the forms-DBMS, Describe about the Forms- DBMS Forms ar...

Describe about the Forms- DBMS Forms are generally known as data entry screens as they are user interface that allows data in the tables to be viewed, edited or entered. Forms

What is visibility give uml notation, What is visibility give UML notation?...

What is visibility give UML notation? Visibility refers to the ability of a process to reference a feature from another class and has possible valued of public, private, protec

Define the half duplex transmission, Define the Half Duplex Transmission ...

Define the Half Duplex Transmission A half-duplex channel can receive andsend, but not at the same time. It's like a one-lane bridge where two-way traffic should give way in

What is CRC, In a frame transmission, CRC stands for? CRC stands for Cy...

In a frame transmission, CRC stands for? CRC stands for Cyclic Redundancy Check, in a frame transmission.

Unification - artificial intelligence, Unification - Artificial intelligenc...

Unification - Artificial intelligence: We have said that the laws of inference for propositional logic detailed in the previous lecture can also be used in first-order logic.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd