What is shadow ram, Computer Engineering

Shadow RAM is a copy of Basic Input/Output Operating System (BIOS) routines from read-only memory (ROM) into a particular area of random access memory (RAM) so that they can be accessed more rapidly. Access in shadow RAM is typically in the 60-100 nanosecond range while ROM access is in the 125-250 ns range. In some operating systems like DOS, certain BIOS routines are not only used during the boot or start-up of the system, but also during normal operation, particularly to drive the video display terminal. In Windows and OS/2, thus, these routines are not used and the use of shadow RAM is not essential. In some systems, the user can turn the use of shadow RAM off or on.       

 

 

Posted Date: 4/6/2013 5:34:52 AM | Location : United States







Related Discussions:- What is shadow ram, Assignment Help, Ask Question on What is shadow ram, Get Answer, Expert's Help, What is shadow ram Discussions

Write discussion on What is shadow ram
Your posts are moderated
Related Questions
What is a 3-D Accelerator?  3-D Accelerator is no magic technology. It is merely an accelerator chip which has built-in ability to perform the mathematics and algorithms neede

To work with Internet as well as to utilize its facilities we use certain tools. For illustration, Telnet is a tool, which is utilized for logging on remote computers on the Intern

Stack unwinding in C++ is a process during exception handling when the destructor is known for all local objects the place where the exception was thrown and where it is caught.

i want the matlab code for the following events 1. face detection 2. video to frame conversion 3.video shot boundary detection

Example Multi-layer ANN with Sigmoid Units - Artificial intelligence: We will discuss ourselves here with ANNs containing only 1 hidden layer, as this makes describing the back

Q. What do you mean by Linker? For modularity of your programs it is better to break your program in numerous sub routines. It's even better to put common routine such as read

Show the two ways in which Warnings can be suppressed in PHP? 1) Stop an individual function call from producing an error message put the @ warning suppression Operator front o

Tightly Coupled System- Shared Memory System Shared memory multiprocessorshas has following description: Every processor commune through a shared global memory. For

Q. Illustrate what is a astrophysics? Answer:- Examine of galaxies, stars and the creation of the universe including predictions about how it will proceed from here.

Structuring the Web site is first step towards building the corporate Web site. Structuring includes creating a folder that includes all our picture files, text files and database