Buses - computer architecture, Computer Engineering

Assignment Help:

Buses:

  • Execution of 1 instruction need the following 3 steps to be performed by the CPU:

I.  Fetch the contents of the memory location pointed at by the computer system. The contents of this location are interpreted as an instruction to be executed. Therefore, they are holed up in the instruction register (IR). Symbolically, it can be written as:

1438_Buses.png

2. supposing that the memory is byte addressable .it increment the contents of the PC by 4, that is 1155_Buses1.png

3.   Perform the actions mention by the instruction stored in the IR

  • But, in cases wherever an instruction take place more than 1 word, steps 1 and 2 might be repeated as several times as essential to fetch the complete instruction.
  • 2 first steps are typically referred to as the fetch phase.
  • Step 3 constitutes  in the execution phase

 

29_Buses2.png

Most of the operation in step 1 to 3 denoted earlier can be carried out by performing one or more of the following function

However, in cases where an instruction takes place more than 1 word, steps 1 and 2 might be

repeated as several times as essential to fetch the complete instruction.

  • 2 first steps are usually referred to as the fetch phase.
  • Step 3 constitutes in the execution phase

Fetch the contents of a specific memory location and load them into a CPU Register

  • Hold up a word of data from a CPU register into a particular given memory location.
  • Transfer a word of data from 1 CPU register to another or to ALU.
  • Perform logic or arithmetic operation, and store the outcome in a CPU register.

 


Related Discussions:- Buses - computer architecture

Why process scheduling algorithm favour i/o bound processes, Suppose that a...

Suppose that a process scheduling algorithm favors those processes that have used the least processor time in the recent past. Why will this algorithm favour I/O- bound processes,

Explain the handshaking signals, a. Explain the hardware mechanism for hand...

a. Explain the hardware mechanism for handling multiple interrupt requests. b. What are handshaking signals? Describe the handshake control of data transfer during input and out

what is polymorphism in c++, Polymorphism in C++ is the idea that a base c...

Polymorphism in C++ is the idea that a base class can be inherited by various classes. A base class pointer can point to its child class and a base class array can store dissimilar

What is link destruction, What is link destruction? Link destruction is...

What is link destruction? Link destruction is inverse of link creation. When a link is destroyed makes sure the associated objects accessible by other handles or intentionally

Define the term package- object oriented modeling, Define the term package-...

Define the term package- object oriented modeling A package is a common purpose mechanism for organising elements into groups. Package can also contain other packages. The no

Exit command, Your shell must accept the exit command. This command will ...

Your shell must accept the exit command. This command will be in the form: e x i t When you encounter this command, your shell should terminate. Please note that when you

Execution of micro-program, The micro-instruction cycle can comprises two b...

The micro-instruction cycle can comprises two basic cycles: the fetch and execute. Here in the fetch cycle address of micro-instruction is produced and this micro-instruction is pu

Assembly Language program, How to get an output: Please enter a number betw...

How to get an output: Please enter a number between 0 and 6 (Enter to stop): 2 The Day of Week is Tuesday Please enter a number between 0 and 6 (Enter to stop): 9 Input Invalid Ple

What are assemblies, What are Assemblies? Assemblies are same to dll f...

What are Assemblies? Assemblies are same to dll files. Both have the reusable pieces of code in the shape of classes/ functions. Dll needs to be registered but assemblies have

Illustrate lcd technology, Q. Illustrate LCD Technology? The technology...

Q. Illustrate LCD Technology? The technology behind LCD is known as Nematic Technology since the molecules of liquid crystals used are nematic which implies that rod-shaped. 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