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Q:

What are software interrupts?

Answer

RST0, RST1, RST2, RST3, RST4, RST5, RST6, RST7.

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Subject: Hardware

Q:

Which interrupts has the highest priority?

Answer

TRAP has the highest priority


there are 2 types of interrupts external and internal. NMI has highest priority among all external interrupts, TRAP has highest priority among all internal interrupts. 

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Subject: Hardware

Q:

1. All beutiful things are sad.She is beutiful.She is sad

2. All nice things are flat.TV are flat.TV's are nice things

3. Potatoes are stems.All stems are fruits.Potatoes are fruits

 

Choose the alternative where the 3rd segment can be deduced from above two

A) 1 only B) 1 and 2
C) 3 only D) 1 and 3
 
Answer & Explanation Answer: D) 1 and 3

Explanation:
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Filed Under: Verbal Reasoning - Mental Ability

Q:

How many interrupts are there in 8085?

Answer

There are 12 interrupts in 8085.

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Subject: Hardware

Q:

what is the clock frequency for 8085?

Answer

3MHz is the maximum clock frequency for 8085.

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Subject: Hardware

Q:

What is the RST for the TRAP?

Answer

RST 4.5 is called as TRAP.

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Subject: Hardware

Q:

Why address bus in unidirectional and data bus is bidirectional?

Answer

Because there is no need address traansaction between processor and peripheral device but data bus is needed because data has to be read and write

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Subject: Hardware

Q:

Can 8259 he interfaced with 8085 via the trap pin?

Answer

Yes... so if 8529 gives interrupt then it will be serviced immediately but since INTA pin is left hanging the INSR bit will never be set.. and so whenever my interrupt occurs depending upon priority it will be serviced.. also the ISR address for all interrupts will be same ie 0024H..


Interrupt via trap is nonmaskable, so it will be serviced immediately.

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Subject: Hardware