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Microprocessor

Microprocessor
When an 8085 microprocessor is reset, the address bus contains

 0043H
 003CH
 0000H
 002CH

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Microprocessor
In 8085 microprocessor which one of the following statement is wrong

 serial I/O is not possible
 there is a pin available for serial input
 serial I/O is possible through SIM and RIM instruction
 there is a pin available for serial output

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Microprocessor
The multiplexing of address bus and data buses is used in

 all the microprocessors.
 none of these.
 never multiplexed.
 depends on the internal architecture.

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Microprocessor
The content of the A15-A8 (higher order address lines) while executing “IN 8-bit port address” instruction are

 same as the content of A7-A0
 all bits set (i.e. FFH)
 irrelevant
 all bits reset (i.e. 00H)

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Microprocessor
What is SIM?

 Sorting interrupt mask.
 Select interrupt mask.
 None of these.
  Set interrupt mask.

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Microprocessor
In order to complement the lower nibble of accumulator one can use

 ORI 0FH
 XRI 0FH
 CMA
 ANI 0FH

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