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Microprocessor

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

 4.
 3.
 2.
 6.

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Microprocessor
Which of the following pair of gates can form a latch?

A pair of cross copled AND
A cross coupled NAND/OR
A pair of cross coupled NAND
A pair of cross coupled OR

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Microprocessor
The addressing mode in instruction PUSH B is

 immediate
 register
 direct
 register indirect

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Microprocessor
During the execution of the instruction, the ________tests the status and control flags and updates them based on the results of executing the instruction.

 Execution Unit (EU)
 Both ‘c’ and ‘d’
 None of these
 Bus Interface Unit (BIU)

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Microprocessor
The reason for the presence of ALE pin in 8085, but not in 6800 is that

 8085 has multiplexed bus, whereas 6800 does not have
 8085 uses I/O mapped I/O, whereas 6800 uses memory mapped I/O
 8085 has 5 interrupts lines, whereas 6800 has only two
 None

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Microprocessor
What is SIM?

  Set interrupt mask.
 Sorting interrupt mask.
 Select interrupt mask.
 None of these.

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