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Microprocessor

Microprocessor
Pick up the programmable interrupt controller from the following

 8279
 8257
 8259
 8275

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

 4.
 2.
 6.
 3.

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Microprocessor
RST 3 instruction will cause the processor to branch to the location

 0024H
 0028H
 0018H
 0000H

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Microprocessor
Pick out the matching pair

 HOLD; DMA
 S0;S1;wait status
 SID; SIM
 READY; RIM

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

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

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Microprocessor
A sequence of two registers that multiplies the content of DE register pair by two and stores the result in HL register pair (in 8085 assembly language) is

 XCHG & DAD B
 PCHL & DAD D
 XCHG & DAD H
 XTHL & DAD H

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