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Microprocessor

Microprocessor
Identify the non-maskable interrupt from the following

 RST 7.5
 RST 4.5
 RST 5.5
 RST 6.5

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Microprocessor
How many 16-bit special purpose registers are present in 8085 microprocessor?

 8
 2
 6
 16

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

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

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Microprocessor
A bus connected between the CPU and main memory that permits transfer of information between main memory and the CPU is known as

 Memory bus
 Control bus
 DMA bus
 Address bus

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Microprocessor
After RESET 8255 will be in

 mode 0; all ports are input
 mode 0; all ports are output
 mode 2
 unchanged condition

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Microprocessor
The microprocessor may be made to exit from HALT state by asserting

 A or B or HOLD line
 READY line
 RESTART
 any of the five interrupt lines

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