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Microprocessor

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

m
2*m
log2 (m)
2^m

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Microprocessor
Assuming LSB is at position 0 and MSB at position 7, which bit positions are not used (Undefined) in flag register of an 8085 microprocessor?

 2, 3, 5
 1, 3, 5
 1, 3, 4
 1, 2, 5

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Microprocessor
XCHG instruction exchanges the content of H-L with ______ register pair.

 Stack Pointer
 D-E
 B-C
 PSW

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Microprocessor
How many bytes in a zero memory page should be reserved for vectors used by RST instructions?

 128.
 16.
 64.
 32.

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

 6.
 4.
 3.
 2.

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Microprocessor
The 8085 microprocessor enters into bus idle machine cycle whenever

None of these
 INTR interrupt is recognized
 DAD RP instruction is executed
 RST 7.5 is recognized

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