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Microprocessor

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

 D-E
 B-C
 Stack Pointer
 PSW

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Microprocessor
________is the only non-vectored interrupt in 8085 microprocessor.

 TRAP
 INTR
 RST 7
 RST 5.5

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Microprocessor
The register which holds the information about the nature of results of arithmetic and logic operations is called as

 Condition code register
 Flag register
 Accumulator
 Process status register

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Microprocessor
S0 and S1 pins are used for

 indicating the processor’s status
None of these
 serial communication
 acknowledging the interrupt

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Microprocessor
The reason for the presence of ALE pin in 8085, but not in 6800 is that

 8085 has multiplexed bus, whereas 6800 does not have
 None
 8085 has 5 interrupts lines, whereas 6800 has only two
 8085 uses I/O mapped I/O, whereas 6800 uses memory mapped I/O

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Microprocessor
Total numbers of output pins in 8085 microprocessor are

 30
 27
 40
 13

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