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Microprocessor

Microprocessor
Register pair used to indicate memory

 D and E
 H and L
 B and C
 W and Z

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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
 8
 6
 10

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Microprocessor
Which of the following is not treated as hexadecimal constant by assembler in 8085?

45 H
64 H
6 AFH
234

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Microprocessor
SPHL instruction copies the content of H-L register pair to the _________.

 Stack Pointer
 D-E
 PSW
 B-C

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Microprocessor
When the write enable input is not asserted, the gated D latch _________ its output.

Clears
Can not change
Complements
Sets

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

 D-E
 B-C
 Stack Pointer
 PSW

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