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Microprocessor

Microprocessor
Which of the following instruction will never affect the zero flag?

 DCX Rp
 DCR R
 ORA R
 XRA R

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Microprocessor
Assertion(A): Address bus is unidirectional. Reason(R): Data bus is bidirectional

 A is false but R is true
 Both A & R are true and R is the correct explanation of A
 Both A & R are true but R is not the correct explanation of A
 A is true but R is false

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Microprocessor
It is possible to copy a file in the same directory.

False
True

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Microprocessor
Identify the non-maskable interrupt from the following

 RST 5.5
 RST 7.5
 RST 4.5
 RST 6.5

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Microprocessor
Which one of the following microprocessor is not an 8-bit microprocessor

 68000
 8085
 6502
 Z-80

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

 2.
 4.
 6.
 3.

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