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Implementing Protection with Virtual Memory - computer architecture:
To enable the operating system to implement protection in the VM system, the HW have to:
I. Support at least 2 modes that denoted whether the running process is a user process (executive process) or an operating system process (kernel/supervisor process).
II. Provide a part ion of the CPU state that a user process may read but not write (includes supervisor mode bit).
o Only operating system process may change page tables. Page tables are held in operating system address space thereby preventing a user procedure from changing them.
o When processes desire to share information in a restricted way, the OS have to assist them.
o The write access bit (in both the TLB and the page table) can be used to limit the sharing to only read sharing.
Develop a regular expression for Real number with optional fraction and Identifier. (i) A regular expression for real number with optional fraction is [+ | -] (d) +. (d)* (i
VLIW instruction word is compacted to have floating-point addition, one branch, floating point multiply, and one integer arithmetic and load/store operation as displayed in Figure
Condition codes are the list of possible conditions that can be tested through conditional instructions. Typical conditional instructions have: conditional branches, conditional ju
Vector-Vector Instructions In this category, vector operands are fetched from vector register and accumulated in another vector register. These instructions are indicated with
In general what are the two ways in which one can retrieve data from tables? Using Select statements, Database Program.
Q. Show block Diagram of sequential circuits? A sequential circuit is an interconnection of storage elements and combinational circuits. The storage elements known as flip-flop
Considering the fact that a lot of research has been done concerning e-commerce, what has been brought in this work is that there has been a lot of facts, studies, and experiments.
In what way is stored program control superior to hard wired control? The SPC gains superiority over hard wired because of following points: SP C Ha
If the input to T-flipflop is 100 Hz signal, the final output of the three T-flipflops in cascade is ? Ans. The final output of the three T-flip-flops in cascade is 12
Q. Explain the Passive Matrix in lcd technology? In a passive matrix arrangement LCD panel has a grid of vertical and horizontal conductors and every pixel is positioned at an
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