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Microprocessor

Microprocessor
In a microprocessor based system the stack is always in

 EPROM
 microprocessor
 ROM
 RAM

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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
The characteristics of RESET OUT signal is/are

 all.
 indicates that µp is being reset.
 the signal is synchronized to the processor clock.
 this signal can be used to reset other devices.

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Microprocessor
What is SIM?

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

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Microprocessor
Identify the programmable interval timer from the following

 8252
 8253
 8275
 8279

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Microprocessor
SUB A instruction in 8085

 reset zero and parity flags
 sets zero and sign flags
 sets zero and carry flags
 reset carry and sign flags

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