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Microprocessor

Microprocessor
What is the size (in bytes) of Prefetch queue in 8086?

 3.
 6.
 4.
 2.

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Microprocessor
In a microcomputer , the address of memory locations are binary numbers that identify each memory circuit where a byte is stored. If a microcomputer uses 20-bit address, then numbers of different memory locations are

 220
 20
 220 - 1
 220-1

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Microprocessor
Temporary registers in 8085 are

 W and Z.
 D and E.
 B and C.
 H and L.

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Microprocessor
Bus Interface Unit (BIU) in 8086 performs the following functions:

 All the above.
 Arithmatic and Logic operations.
 Instruction fetch.
 Instruction decoding.

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Microprocessor
In 8085 microprocessor, in response to RST 7.5 interrupts the execution is transferred to memory location

 0034H
 0000H
 002CH
 003CH

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Microprocessor
_____________is used to read the status of the hardware interrupts (RST 7.5, RST 6.5, RST 5.5) by loading into the A register a byte which defines the condition of the mask bits for the interrupts.

 EI
 SIM
 DI
 RIM

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