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Microprocessor

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

 3.
 2.
 6.
 4.

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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
 DI
 SIM
 RIM

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Microprocessor
Temporary registers in 8085 are

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

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Microprocessor
Maximum of how many devices can be connected simultaneously to the microprocessor via 8257 in DMA data transfer mode?

 4
 10
 6
 8

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Microprocessor
Because we wish to allow each ASCII code to occupy one location in memory, most memories are __________ addressable.

WORD (16 bits)
NIBBLE
BYTE
DOUBLEWORD (32 bits)

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Microprocessor
The processor status word of 8085 microprocessor has five flags namely:

 S, Z, AC, P, CY
 S, Z, AC, P, OV
 S, OV, AC, P, CY
 S, Z, OV, P, CY

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