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Microprocessor

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

 B-C
 PSW
 Stack Pointer
 D-E

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Microprocessor
I)A total of about one million bytes can be directly addressed by the 8086 microprocessor II)8086 has thirteen 16-bit registers III)8086 has eight flags IV)Compared to 8086, the 80286 provides a higher degree of memory protection Which one of the statements given above are correct?

 1,2 & 4
 2,3&4
 1,2 & 3
 1,3 &4

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Microprocessor
The data bus of any microprocessor is always

 Bi-directional
 None
 Unidirectional
 Either unidirectional or bi-directional

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Microprocessor
In 8085 microprocessor, in response to RST 7.5 interrupts the execution is transferred to memory location

 002CH
 0000H
 003CH
 0034H

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Microprocessor
Identify the programmable DMA controller from the following

 8257
 8253
 8251
 8279

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Microprocessor
The data lines of 8085 microprocessor are multiplexed with

 status lines
None of these
 lower order address lines
 higher order address lines

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