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

How enterprises are using bpr in their e-business processes, One of the mos...

One of the most important competitive strategies for E-Businesses today is business process reengineering. BPR is more than automating business processes to make modest improvement

Implement the logic of the following gates, Q. Develop a menu driven prog...

Q. Develop a menu driven program to implement the logic of the following gates. I. AND Gate II. OR Gate III. NOT Gate IV. Exit The user has option to give n number

Stack operation and interrupts in microprocessor, Let us review the operati...

Let us review the operation of the stack within the 68HC11, the stack is a defined area of RAM which is last in first out register (LIFO) . Access to the stack is made via a stack

How to set a read or write watch point for a variable, By using Rwatch, Awa...

By using Rwatch, Awatch command in GDB we can set read or write watchpoint for a variable.

What is store program control, What is store program control (SPC)?  I...

What is store program control (SPC)?  In  stored  program  control  systems,  a  set  of  instructions  or  program  to  the computer  is  stored  in  its  memory  and  instru

What is the necessity of an interface, What is the necessity of an interfac...

What is the necessity of an interface?  Any device that has to be linked to a CPU requires an interface. This takes care of the mismatch in speed, data and electrical character

What is synchronous message passing, Q. What is Synchronous message passing...

Q. What is Synchronous message passing? In Synchronous message passing is executed on synchronous communication network.  In that case sender and receiver processes should be

Properties for of static ram, a) Give eight properties for each of static R...

a) Give eight properties for each of static RAM (SRAM) and DRAM (dynamic RAM) and provide the low-level structure of each type of memory. b) Assume a system with 16 Megabytes o

Design a nand-to-and gate network, Use as few gates as possible, design a N...

Use as few gates as possible, design a NAND-to-AND gate network that realize the following Boolean algebra expression. A'BC'D + ABC'D' + A'B'CD' + AB'C'D'

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