Also found in: Dictionary, Thesaurus.
shadow ram(operating system)
A memory area in PC-AT compatibles used to store frequently accessed ROM code to speed up operation.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
shadow RAMA RAM copy of a PC's ROM BIOS. In order to improve performance, the BIOS, which is stored in a ROM chip, is copied to and executed from RAM. RAM chips are accessed faster than ROMs.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.