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Microprocessor

Microprocessor
SPHL instruction copies the content of H-L register pair to the _________.

 Stack Pointer
 PSW
 B-C
 D-E

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

 A is false but R is true
 A is true but R is false
 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

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

 6.
 2.
 4.
 3.

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Microprocessor
Which of the following is not treated as hexadecimal constant by assembler in 8085?

6 AFH
64 H
45 H
234

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Microprocessor
If m is a power of 2, the number of select lines required for an m-input mux is:

2*m
log2 (m)
2^m
m

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Microprocessor
________is the only non-vectored interrupt in 8085 microprocessor.

 INTR
 RST 5.5
 TRAP
 RST 7

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