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Microprocessor

Microprocessor
Pick up the programmable interrupt controller from the following

 8257
 8279
 8275
 8259

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Microprocessor
During which T-state, contents of OP code from memory are loaded into IR (Instruction Register)?

 T3 OP code fetch
 T4 OP code fetch
 T1 OP code fetch
 T2 OP code fetch

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Microprocessor
Which of the following pair of gates can form a latch?

A pair of cross coupled NAND
A cross coupled NAND/OR
A pair of cross coupled OR
A pair of cross copled AND

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

 Stack Pointer
 B-C
 PSW
 D-E

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Microprocessor
While INX B instruction execute,

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

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Microprocessor
Bus Interface Unit (BIU) in 8086 performs the following functions:

 All the above.
 Arithmatic and Logic operations.
 Instruction decoding.
 Instruction fetch.

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