What is write-back or copy-back protocol, Computer Engineering

Assignment Help:

What is write-back or copy-back protocol?

For a write operation using this protocol during write-hit: the method is to update only the cache and to mark it as updated with an associated flag bit, often called the modified or dirty bit. The main memory location of the word is updated later, when the block having this marked word is to be removed from the cache to make room for a latest block.

For a write-miss: the block having the addressed word is first brought into the cache, and then the deserved word in the cache is overwritten with the latest information.

 

 


Related Discussions:- What is write-back or copy-back protocol

What is data movement, Data movement instructions shift data from one locat...

Data movement instructions shift data from one location to another. The source and destination locations are verified by the addressing modes, and can be registers or memory. Many

Define the fundamentals of computer system, Define the Fundamentals of comp...

Define the Fundamentals of computer system A computer processes digital information. In order to do that it runs (executes) a machine language program. As an illustration, when

Non-repudiation achieved in designing e-cash based system, How can non-repu...

How can non-repudiation be achieved into designing e-cash based system? E-cash is fundamentally an online solution. The buyer should validate the coins by the issuer so as to g

Color scheme in a repeater control, How can you provide an alternating colo...

How can you provide an alternating color scheme in a Repeater control?  AlternatingItemTemplate Like the ItemTemplate element, but rendered for every otherrow (alternating item

What is selective complement - logic micro operations, SELECTIVE COMPLEMEN...

SELECTIVE COMPLEMENT The selective-complement process complements bits in register A where there are corresponding 1's inside register B. It does not affect bit positions which

Explain basic time division and time switching method, What is time divisio...

What is time division switching? With the help of block diagram explain basic time division and time switching method. Time Division Switching: A switching component can be s

Explain meaning of each field format of icmp header, Give the format of ICM...

Give the format of ICMP header and explain meaning of each field. The format of ICMP header is given below: Internetwork Control Message Protocol (ICMP) ICMP H

What are the steps involved in designing, Before getting into the design th...

Before getting into the design the designer should go by the SRS prepared by the System Analyst. The main tasks of design are Architectural Design & Detailed Design. In Arch

What is an "on input filed" statements, What is an "on input filed" stateme...

What is an "on input filed" statements? ON INPUT The ABAP/4 module is known as only if a field having the Value other than the initial Value. This initial Value is explain

What is a priority interrupt, What is a Priority Interrupt? A priority ...

What is a Priority Interrupt? A priority interrupt is an interrupt that establishes a priority over the various sources to determine which condition is to be serviced first whe

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