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8086 Interview Questions & Answers - Learning Mode
COOLINTERVIEW.COM COMPUTER HARDWARE INTERVIEW QUESTIONS 8086 INTERVIEW QUESTIONS QUESTIONS & ANSWERS - LEARNING MODE

8086 Interview Questions & Answers - Learning Mode

The 8086 ("eighty eighty-six", also called iAPX 86) is a 16-bit microprocessor chip designed by Intel between early 1976 and mid-1978, when it was released. The 8086 was a 16-bit processor with a 16-bit data bus, 20-bit external bus, 64K I/O ports; it ran at up to 10Mhz. In the previous processor generation the amount of addressable RAM was 64K. The 8086 was designed to address as much as 1MB of memory. The 8086 CPU is organized as two separate processors, called the Bus Interface Unit (BIU) and the Execution Unit (EU). The BIU provides H/W functions, including generation of the memory and I/O addresses for the transfer of data between the outside world -outside the CPU, that is- and the EU.

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8086 Interview Questions & Answers - Learning Mode
Try 8086 Interview Questions & Answers - Exam Mode
Question: 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. Source: CoolInterview.com
Question: Why there are two ground pins in 8086?

Answer: The two pins are used because the Pin +VCC provides the power supply to it and GND pin is used to earth the pin so no voltage breakdown is there. Source: CoolInterview.com
Question: What is the Maximum clock frequency in 8086?

Answer: 5 Mhz is the Maximum clock frequency in 8086. Source: CoolInterview.com
Question: 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. Source: CoolInterview.com
Question: What is the difference between 8086 and 8088?

Answer: 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. Source: CoolInterview.com
Question: What are the flags in 8086?

Answer: In 8086 Carry flag, Parity flag, Auxiliary carry flag, Zero flag, Overflow flag, Trace flag, Interrupt flag, Direction flag, and Sign flag. Source: CoolInterview.com
Question: What are the various interrupts in 8086?

Answer: Maskable interrupts, Non-Maskable interrupts. Source: CoolInterview.com
Question: Where 8086 mostly used & tell application of 8086?

Answer: 8086 is used for general purpose like it is used in traffic signals for control purpose .It's also used for small applications like for calculator,etc

scientific calculators & small arithmatic operations
Source: CoolInterview.com
Question: What are the different functional units in 8086?

Answer: Bus Interface Unit and Execution unit, are the two different functional units in 8086. Source: CoolInterview.com
Question: Which Flags can be set or reset by the programmer and also used to control the operation of the processor?

Answer: Trace Flag,
Interrupt Flag,
Direction Flag.
Source: CoolInterview.com
Question: What are the address lines for the hardware interrupts? -

Answer:
RST 7.5 003C H

RST 6.5 0034 H

RST 5.5 002C H

TRAP 0024 H Source: CoolInterview.com
Question: What are the different functional units in 8086?

Answer: Bus Interface Unit and Execution unit, are the two different functional units in 8086. Source: CoolInterview.com
Question: What are the different functional units in 8086?

Answer: Bus Interface Unit and Execution unit, are the two different functional units in 8086. Source: CoolInterview.com
Question: What is meant by cross-compiler?

Answer: A program runs on one machine and executes on another is called as cross-compiler

Programs which compile on One Machine and Execute on Another machine is called cross compiler
Source: CoolInterview.com
Question: Give examples for Micro controller?

Answer: Z80, Intel MSC51 &96, Motorola are the best examples of Microcontroller. Source: CoolInterview.com
Question: Which microprocessor accepts the program written for 8086 without any changes?

Answer: 8088 is that processor. Source: CoolInterview.com
Question: What are the flags in 8086?

Answer: 8086 Carry flag, Parity flag, Auxiliary carry flag, Zero flag, Overflow flag, Trace flag, Interrupt flag, Direction flag, and Sign flag. Source: CoolInterview.com
Question: What is the Maximum clock frequency in 8086?

Answer: 5 Mhz is the Maximum clock frequency in 8086. Source: CoolInterview.com
Question:
Which microprocessor accepts the program written for 8086 without any changes?


Answer: 8088 is that processor. Source: CoolInterview.com
Question: What is the basic difference between 8085 and 8086 ?

Answer: 8085 is a 8 bit microprocessor
8086 is a 16 bit microproceesor Source: CoolInterview.com

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