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Explain with help of neat diagram and interfacing 8086-8087 closely coupled configuration system.

Mumbai University > Electronics and Telecommunication > Sem 4 > Microprocessor and peripherals

mumbai university mpa • 487  views
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Closely coupled configuration-

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Co-processor cannot take control of the bus; it does everything through the CPU.

Closely Coupled processor may take control of the bus independently 8089 shares CPU’s clock and bus control logic.

Communication with host CPU is by way of shared memory.

Host sets up a message (command) in memory.

Independent processor interrupts host on completion.

Two 8086’s cannot be closely coupled.

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