INTRODUCTION TO MICROPEOCESSOR
MICROPROCESSOR BASICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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synchronization
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inter-signal conversion
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inter-number conversion
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memory address mapping
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Detailed explanation-1: -A major drawback of memory mapped files is error handling. The logistics of recovering to a well-defined state on a segment violation really hurts easy-of-use.
Detailed explanation-2: -Memory-mapping is a mechanism that maps a portion of a file, or an entire file, on disk to a range of addresses within an application’s address space. The application can then access files on disk in the same way it accesses dynamic memory.
Detailed explanation-3: -08․ In 8085 microprocessor system with memory mapped I/O, which of the following is true? With the memory mapped I/O arithmetic and logic operations can be directly performed whereas with I/O mapped I/O it is not possible.
Detailed explanation-4: -But there are also disadvantages: An I/O error on a memory-mapped file cannot be caught and dealt with by SQLite. Instead, the I/O error causes a signal which, if not caught by the application, results in a program crash.