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Microprocessor

Microprocessor
DMA signal/signals in 8085 is/are

 All.
 HLDA.
 READY.
 HOLD.

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Microprocessor
Which general register or general register pair is incremented/decremented by 2 during PUSH and POP instructions?

 Stack Pointer.
 H-L.
 Program Counter.
 D-E.

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Microprocessor
The number of interrupt lines in 8085 is

3
5
4
2

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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?

 1, 2, 5
 1, 3, 4
 1, 3, 5
 2, 3, 5

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Microprocessor
During the execution of the instruction, the ________tests the status and control flags and updates them based on the results of executing the instruction.

 Execution Unit (EU)
 None of these
 Both ‘c’ and ‘d’
 Bus Interface Unit (BIU)

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Microprocessor
The control flags in 8086 are:

 the Trap flag(TF).
 the interrupt flag(IF).
 the direction flag(DF).
All of these

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