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Microprocessor

Microprocessor
During OPCODE fetch the state of S0 and S1 is

 11
 01
 00
 10

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Microprocessor
The microprocessor issues ALE during first T-state of

 memory READ cycle only
 fetch cycle only
 memory WRITE cycle only
 every machine cycle

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Microprocessor
In a computer the data transfer between hard disk and CPU is nearly the same as that between diskette and CPU.

True
False

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Microprocessor
How many machine cycles are required for execution of IN 30H instruction

 6
 5
 3
 4

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Microprocessor
_____________is used to read the status of the hardware interrupts (RST 7.5, RST 6.5, RST 5.5) by loading into the A register a byte which defines the condition of the mask bits for the interrupts.

 EI
 DI
 RIM
 SIM

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Microprocessor
The number of interrupt lines in 8085 is

2
4
3
5

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