DMA CONTROLLER
ARCHITECTURE OF 8085
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The method of accessing the I/O devices by repeatedly checking the status flags is ____
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Program-controlled I/O
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Memory-mapped I/O
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I/O mapped
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None of the mentioned
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Explanation:
Detailed explanation-1: -Explanation: This type of access is called as I/O mapped devices.
Detailed explanation-2: -Interrupts are used to synchronize the processor with the I/O device. When an I/O operation is initiated, the processor sends a command to the I/O device and then continues with other tasks. When the I/O device completes the operation, it sends an interrupt signal to the processor.
Detailed explanation-3: -Hence the correct answer is Single BUS structure.
Detailed explanation-4: -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.
There is 1 question to complete.