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Microprocessor

Microprocessor
In 8086 the number of bytes which can be addressed directly is about

10000
1000
100000
one million

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Microprocessor
In an intel 8085A, which is the first machine cycle of an instruction?

 A memory write cycle
 An op-code fetch cycle
 A memory read cycle
 An I/O read cycle

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Microprocessor
DMA signal/signals in 8085 is/are

 HLDA.
 HOLD.
 All.
 READY.

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Microprocessor
What are the sets of commands in a program which are not translated into machine instructions during assembly process, called?

 Mnemonics
 Operands
 Identifiers
 Directives

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Microprocessor
When any data transfer instruction, to transfer the data from memory to microprocessor, is executed the condition flags are

 not affected
 always set
 always reset
 affected indicating specific conditions

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Microprocessor
Which of the following instruction will never affect the zero flag?

 DCX Rp
 DCR R
 ORA R
 XRA R

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