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Microprocessor

Microprocessor
Which one of the following microprocessor is not an 8-bit microprocessor

 6502
 68000
 8085
 Z-80

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Microprocessor
Register pair used to indicate memory

 W and Z
 H and L
 D and E
 B and C

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

 POP D
 POP B
 POP 30 H
 POP PSW

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Microprocessor
A single instruction to clear the lower nibble of accumulator in 8085 language assembly is

 XRI 0FH
 XRI FOH
 ANI OFH
 ANI F0H

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Microprocessor
Which one of the following interrupt/interrupts is/are only level triggering?

 TRAP
 both ‘a’ and ‘b’
 RST 5.5
 RST 6.5

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

 6
 4
 10
 8

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