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Microprocessor

Microprocessor
Which of the following instruction is not possible in 8085?

 POP PSW
 POP D
 POP B
 POP 30 H

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Microprocessor
Consider the following registers: 1. Accumulator and flag register 2. B and C register 3. D and E register 4. H and L register Which of these 8-bit registers of 8085 microprocessor can be paired together to make a 16-bit register?

 1, 2 and 4
 2, 3 and 4
 1, 3 and 4
 1, 2 and 3

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Microprocessor
In 8086 the number of bytes which can be addressed directly is about

1000
10000
100000
one million

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Microprocessor
In an 8085 microprocessor based system, the contents of SP are 1000H, PUSH B instruction will transfer the contents of registers B & C respectively for memory locations

 0FFF H and 0FFE H
 1000 H and 0FFF H
 0FFE H and 0FFF H
 1000 H and 1001 H

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Microprocessor
What is used to access 16-bit data in 8086?

 Data Banking.
 Pipeline architecture.
None of these
 Memory Banking.

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Microprocessor
DMA is used between

 none
 microprocessor and I/O
 microprocessor and memory
 memory and I/O

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