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

Assignment help on Operating System and JQuery, I need help on my assignmen...

I need help on my assignments that i need to submit in 10 days. There are total 3-4 assignments on two different subjects: 1) 2-3 assignments in Operating Systems and 2) 1-2 assign

Techno hype - obstacle to information system, Techno hype - Obstacle to Inf...

Techno hype - Obstacle to Information System New technology has always been accompanied by a certain amount of euphoria that inevitably leads to unrealistic expectations place

Cognitive science applications, This branch of AI is concerned with incor...

This branch of AI is concerned with incorporating knowledge from varied disciplines such as biolog neurology psychology mathematics and several linked disciplines. It is typic

Explain working of direct memory access, Q. Explain working of Direct Memor...

Q. Explain working of Direct Memory Access? In both programmed I/O and interrupt-driven processor is busy with executing input/output instructions and I/O transfer rate is limi

Number of addresses in an instruction, Generally the Instruction Set Archit...

Generally the Instruction Set Architecture (ISA) of a processor can be distinguished using five categories:  Operand Storage in the CPU - Where are the operands kept other t

Determine about the three-state gate, Determine about the three-state gate ...

Determine about the three-state gate A three-state gate is a digital circuit which shows three states. Two of them are equivalent to logic 1 and 0.  The third one is a high im

What are threaded binary trees, What are threaded binary trees? A Threa...

What are threaded binary trees? A Threaded Binary Tree is a binary tree in which each node that does not have a right child has a THREAD (in real sense, a link) to its INORDER

How firewalls operate, Firewalls operate by Creening packets to/from th...

Firewalls operate by Creening packets to/from the Network and give controllable filtering of network traffic.

Describe the horizontal frequency or cycle, Q. Describe the Horizontal Freq...

Q. Describe the Horizontal Frequency or cycle? Horizontal Frequency: The time to scan one line connecting the right edge to left edge of the screen horizontally is known as t

Explain token ring, Explain Token Ring. Token Ring: A token ring is ...

Explain Token Ring. Token Ring: A token ring is a collection of single point -to-point links, which arise from a circle. In a token ring a special bi t pattern, termed as th

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