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Microprocessor

Microprocessor
RST 3 instruction will cause the processor to branch to the location

 0024H
 0028H
 0018H
 0000H

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Microprocessor
Identify the programmable DMA controller from the following

 8253
 8251
 8257
 8279

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

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

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Microprocessor
IC 7485 cannot be cascadeD.

False
True

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Microprocessor
The operations executed by two or more control units are referred as

 Macro-operations
 Multi-operations
 Micro-operations
 Bi control-operations

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Microprocessor
The timing difference between a slow memory and fast processor can be resolved if

External buffer is used
Either A or B
Processor is capable of waiting
Neither A nor B

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