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In the 8086 microprocessor, a request grant mechanism is used for managing bus access in a system with multiple processors or devices. When a device wants to gain control of the system bus, it sends a "request" signal (RQ/GT0 or RQ/GT1) to the processor. In response, the processor may grant control by asserting a "grant" signal, allowing the requesting device to communicate on the bus for data transfer. This mechanism facilitates efficient resource sharing and multitasking in complex computing environments.

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1mo ago

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