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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.
Explain the necessary conditions for deadlock to occur. Conditions for deadlock to arise are: i. Mutual exclusion: At least one resource must be held in a non-sharable mo
Nested Macro calls are expanded using the? Ans. By using the LIFO (Last in First out) Nested Macro calls are expanded.
Described virtual memory Ans: Data is to be stored in physical memory locations that have addresses different from those that specified by the program. The memory control circu
Object Oriented Analysis and Design 1. What are the advantages of object-oriented systems? 2. Describe the Booch Methodology. 3. Justify that UML is a language for modeli
How Race Around Condition can be avoided? Ans: The race around condition can be avoided if 1. Duration of clock pulse being high is small like comparative to the dela
Organisational Inertia - Obstacle To Information System This is most easily understood as problems of change and culture. Like any change process technology led change will be
Q. Show a string in assembly language? MOV AH, 09H MOV DX, OFFSET BUFF INT 21H Here data in input buffer stored in data segment is intended to be displayed on mo
Define Coupling? Coupling means the measure of interconnection between modules in a program structure. It depends on the interface problem between modules.
Term memory as used in a computer context initially The term memory as used in a computer context initially referred to magnetic core memory devices which were used beginning
Q. What do you mean by PROC Directive? PROC Directive: Code segment comprises executable code for a program that includes one or more procedures defined initially with PROC dir
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