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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.
A very useful application of assembly is to generate delay loops. These loops are used for waiting for some time before execution of subsequent instruction. However how to find
Ethernet 10 Base 2 is an example of network topology. (A) Bus (B) Ring (C) Star
What is a Spool request? Spool requests are formed during dialog or background processing and placed in the spool database with information about the printer and print format.
Use 4 D-bascules connected in serial all synchronized with the similar CLK. Then connect all 4 outputs, & 2nd output must reverse, of the D-bascule to an AND logic. The output of t
What is class, class diagram? An object is an instance of a class. Class explains a group of objects with similar properties (attributes), behaviour (operations), kinds of rela
Data Dependency It indicates to the situation in which two or more instructions share same data. The instructions in a program are able to be arranged based on relationship o
What is LoadRunner
Q. Explain Passing Parameters Using Pointers ? This method overcomes the drawback of using variable names directly in procedure. It uses registers to pass procedure pointers to
What is program-controlled I/O? In program controlled I/O the processor repeatedly checks a status flags to achieve the needed synchronization among the processor and an input
What is the maximum size of the memory that can be used in a 16-bit computer and 32 bit computer? The maximum size of the memory that can be used in a 16-bit computer is 2 memo
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