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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.
DMA controllers in computer system: DMA Controller Part of the I/O device interface DMA Channels Performs functions that in general would be performed by t
1. What factors should be considered when selecting a digital encoder (line codes)? Briefly mention five of those factors. Use sketches and additional text to describe the followin
Calculation of physical address and Logical address.
What is meant by inferring latches, how to avoid it? Consider the following: always @(s1 or s0 or i0 or i1 or i2 or i3) case ({s1, s0}) 2'd0: out = i0; 2'd1: out =
Explain non-adapting routing. Systems which do not implement adaptive routing are explained as using non-adapting or static routing, which routes by a network are explained by
Q. Can a vector have a component equivalent to zero and still have a nonzero magnitude? Answer:- Yes For example the 2-dimensional vector (1, 0) has length sqrt (1+0) = 1
Q. F' (A, B, C, D) = (A + B + D')(A + C' + D')(A + B' + C') D' (A, B, C, D) = (A + B' + C + D')(A' + C' + D')(A' + B + D) Find the simplified function F and imple
What is critical section problem? Consider a system having of 'n' processes. Each process has segment of code known as a critical section, in which the process may be changing
Choose the descriptions below with the most appropriate memory management scheme (A through D). Solutions may be used once, more than once, or not at all. A. Fixed-partitio
contributes to violence in our society. Others point out that television contributes to the high level of obesity among children. Now, we may have to add financial problems to the
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