8086 Questions
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Describe segmentation & pipelining in 8086. What is the difference between 8085 and 8086 and 80286? What is the Maximum clock frequency in 8086? # 5 Mhz is the Maximum clock fre...
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Model Answer & Deep-Dive Explanation
- Describe segmentation & pipelining in 8086.
- What is the difference between 8085 and 8086 and 80286?
- What is the Maximum clock frequency in 8086? #5 Mhz is the Maximum clock frequency in 8086.
- What are the flags in 8086? #In 8086 Carry flag, Parity flag, Auxiliary carry flag, Zero flag, Overflow flag, Trace flag, Interrupt flag, Direction flag, and Sign flag.
- What are the various interrupts in 8086? #Maskable interrupts, Non-Maskable interrupts.
- What is meant by Maskable interrupts? #An interrupt that can be tu ed off by the programmer is known as Maskable interrupt.
- What is Non-Maskable interrupts? #An interrupt which can be never be tu ed off (ie.disabled) is known as Non-Maskable interrupt.
- Which interrupts are generally used for critical events? #Non-Maskable interrupts are used in critical events. Such as Power failure, Emergency, Shut off etc.,
- Which microprocessor accepts the program written for 8086 without any changes? #8088 is that processor.
- What is the difference between 8086 and 8088? #The BIU in 8088 is 8-bit data bus & 16- bit in 8086.Instruction queue is 4 byte long in 8088and 6 byte in 8086.
- What does EU do? #Execution Unit receives program instruction codes and data from BIU, executes these instructions and store the result in general registers.
- Which Flags can be set or reset by the programmer and also used to control the operation of the processor? #Trace Flag, Interrupt Flag, Direction Flag.
- Which Segment is used to store interrupt and subroutine retu address registers? #Stack Segment in segment register is used to store interrupt and subroutine retu address registers.
- What is meant by cross-compiler? #A program runs on one machine and executes on another is called as cross-compiler.
- What are the different functional units in 8086? #Bus Interface Unit and Execution unit, are the two different functional units in 8086.
- Logic calculations are done in which type of registers? #Accumulator is the register in which Arithmetic and Logic calculations are done.
- What is the position of the Stack Pointer after the POP instruction? #The address line is 02 greater than the earlier value.
- What is the position of the Stack Pointer after the PUSH instruction? #The address line is 02 less than the earlier value.
- Which is the tool used to connect the user and the computer? #Interpreter is the tool used to connect the user and the tool.
Interviewer Evaluation Points & Scoring Rubric
- 1 Explain trade-offs between memory, CPU, and network latency.
- 2 Identify failure modes, boundary conditions, and scalability bottlenecks.
- 3 Discuss caching strategies, data consistency models, and recovery.