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

Processes vs threads, One might argue that in general processes are more ?e...

One might argue that in general processes are more ?exible than threads. For one thing, they can live in two different machines, and communicate via sockets; they are easy to spawn

Explain the importance of object oriented modelling, Explain the importance...

Explain the importance of Object Oriented Modelling It is important to note that wi t h the growing complexity of systems, significance of modelling techniques increases. Beca

Eequivalences rules, Eequivalences rules: This conveys a meaning that ...

Eequivalences rules: This conveys a meaning that is actually much simpler so than you would think on first inspection.  Hence we can justify this, by using the following ch

Which of the logic gates are known as universal gates, Which of the logic g...

Which of the logic gates are known as universal gates ? Ans. NAND and NOR are termed as universal gates, since any digital circuit can be realized completely by using either of

What do you mean by inline function, The idea behind inline functions is to...

The idea behind inline functions is to insert the code of a known function at the point where the function is called. If done carefully, this can improve the application's performa

Perceptrons in artificial neural network, Perceptrons in artificial neural ...

Perceptrons in artificial neural network- Artificial intelligence: The weights in any ANN are always only real numbers and the learning problem boils down to selecting the best

In ldb what determines hierarchy of the tables, In LDB what determines hier...

In LDB what determines hierarchy of the tables? Structure

What is delegation, What is delegation? Delegation gives a proper mecha...

What is delegation? Delegation gives a proper mechanism to achieve the desired code reuse. The method is caught in the desired class and forwarded to another class for actual i

Recent parallel programming models, A model for parallel programming is an ...

A model for parallel programming is an abstraction in addition its machine architecture is independent. A model is able to be implemented on different hardware and memory architect

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