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Discuss in detail Table management Techniques?
An Assembler employs the subsequent tables:
OPTAB: Operation Code Table consists of mnemonic operation code and its machine language equivalent.
SYMTAB: Symbol Table keeps symbolic label, operand and their subsequent machine.
LITTAB is a table of literals employed in the program
For effectiveness reasons SYMTAB should remain in main memory all through passes I and II of the assembler. LITTAB is not accessed as often as SYMTAB, though it may be accessed sufficiently often to justify its presence in the memory. If memory is at a premium, just only a part of LITTAB can be kept in memory. OPTAB should be in memory throughout pass I.
what is application software?
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The procedure for handling the page fault is as follows 1. We check the internal table to verify whether the reference was valid or invalid. 2. If the reference was invalid,
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FIFO page replacement This is the easiest page replacement algorithm. Here the 1 st page toward the inside is the 1 st to leave that is the oldest page leaves. To execute th
breifly write a note on about evolution of operating system?
combined approaches (ULT/KLT)
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Under what circumstances do page faults occur? Describe the actions taken by the operating system when a page fault occurs. A page fault happens when an access to a page that
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