Hardware Questions

Q:

Can ROM be used as stack?

Answer

ROM cannot be used as stack because it is not possible to write to ROM.

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Q:

Name the processor lines of two major manufacturer?

Answer

High-end: Intel - Pentium (II, III, 4) AMD - Athlon. Low-end: Intel - Celeron, AMD - Duron. 64-bit: Intel - Itanium 2, AMD - Opteron.

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Q:

What is SIM and RIM instructions?

Answer

SIM is Set Interrupt Mask. Used to mask the hardware interrupts.


RIM is Read Interrupt Mask. Used to check whether the interrupt is Masked or not.

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1 4003
Q:

Give examples for 8/16/32 bit Microprocessor?

Answer

8-bit processor - 8085/Z80/6800;


16-bit processor - 8086/68000/Z8000;


32-bit processor - 80386/80486

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Q:

Which Stack is used in 8086?

Answer

FIFO (First In First Out) stack is used in 8086. In this type of Stack the First Stored Information is retrieved first.

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Q:

Which interrupts is not level-sensitive in 8085?

Answer

TST 7.5 is a raising edge-triggering interrupt.

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Q:

What happens when HLT instruction is executed in processor?

Answer

The Micro Processor enters into Halt-State and the buses are tri-stated. 

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Q:

What is the RST for the TRAP?

Answer

RST 4.5 is called as TRAP.

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