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Microprocessor

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

 D-E
 PSW
 Stack Pointer
 B-C

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Microprocessor
Each instruction in assembly language program has the following fields:Lable fieldMnemonic fieldOperand fieldComment fieldThe correct sequence of these fields is?

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

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

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

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

Clears
Complements
Can not change
Sets

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Microprocessor
While INX B instruction execute,

 only carry and zero flags will be affected
 all flags will be affected
 no flags will be affected
 only carry flag will be affected

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Microprocessor
The forms of IF statements in FORTRAN 77 are called

Logical IF and Block IF
Logic IF, block IF, arithmetic IF and negate IF
Logical IF, block IF and arithmetic IF
Logical IF and arithmetic IF

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