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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.
The Peripheral interface chip system requires the construction of the interface chip circuit, which is controlled by main micro-controller via the user interface. I also need set
Explain Erasable Programmable ROM (EPROM) - Computer Memory? An EPROM is a ROM that can be reprogrammed and erased. A little glass window is installed at the top of the ROM pac
Vector-Scalar Instructions : In this type, when the combination of vector and scalar are fetched and saved in vector register. These instructions are denoted with the many function
Q. Show the properties of Frame Tag? This tag is used for placing an HTML file in the frame created. We should now tell browser what to put in every frame.
Minimize the logic function F(A, B, C, D) = ∑ m(1,3,5,8,9,11,15) + d(2,13) using K-maps Ans. The logic function minimization of F(A, B, C, D) = ∑ m(1,3,5,8,9,11.15) + d(2,13) by
If for a short period of time circuits goes to some dissimilar logic level then it is assumed to have then it is known as static hazard e.g. If the final logic value of output of a
For F = A.B.C + B.C.D ‾ + A ‾.B.C, write the truth table to realize the function using NAND gates only ? Ans. Logic Function given as F = ABC + BC‾D + A‾BC, simplification o
The lrd_stmt function associates a character string (generally a SQL statement) with a cursor. This function sets a SQL statement to be processed.
iconic model problem
Explain the Working of Linker? Linker as well called as link editor and binder. A linker is the program that combines object modules to form an executable program. Several pro
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