Understanding the 8086 Processor

What is the architecture type of the 8086 processor?

• PowerPC architecture

• MIPS architecture

• x86 architecture

• ARM architecture

What is the maximum memory addressable by the 8086 processor?

• 512 KB

• 1 MB

• 4 MB

• 2 MB

How many bits is the data bus of the 8086 processor?

• 8 bits

• 32 bits

• 64 bits

• 16 bits

What are the two main modes of operation in the 8086 processor?

• Basic Mode and Advanced Mode

• Standard Mode and Enhanced Mode

• Minimum Mode and Maximum Mode

• Single Mode and Dual Mode

What is the purpose of the segment registers in the 8086 architecture?

• To hold the starting addresses of different memory segments for efficient memory management.

• To store the results of arithmetic operations.

• To manage input and output devices directly.

• To hold the CPU's instruction set.

What is the function of the instruction pointer (IP) in the 8086 processor?

• The instruction pointer (IP) holds the address of the next instruction to be executed.

• The instruction pointer (IP) stores the current status of the processor.

• The instruction pointer (IP) manages memory allocation for programs.

• The instruction pointer (IP) controls the flow of data between registers.

What is the difference between real mode and protected mode in the 8086?

• Real mode allows direct access to memory with no protection, while protected mode enables memory protection and multitasking with access to more than 1 MB of memory.

• Real mode supports multitasking, while protected mode does not.

• Protected mode restricts access to all memory, while real mode allows access to only 1 MB.

• Real mode is used for modern operating systems, while protected mode is for legacy systems.

How does the 8086 processor handle interrupts?

• The 8086 processor uses an interrupt vector table to manage interrupts, saving state and executing corresponding ISRs.

• The 8086 processor uses a single interrupt handler for all interrupts.

• The 8086 processor requires a reboot to handle interrupts.

• The 8086 processor ignores interrupts completely.

What is the role of the ALU in the 8086 processor?

• The ALU stores data in memory for the 8086 processor.

• The ALU manages input and output operations in the 8086 processor.

• The ALU performs arithmetic and logical operations in the 8086 processor.

• The ALU controls the flow of instructions in the 8086 processor.

What are the main advantages of using the 8086 processor over its predecessors?

• The main advantages of the 8086 processor over its predecessors are its 16-bit architecture, segmented memory model, support for more complex instructions, and higher clock speed.

• Lower clock speed than predecessors

• No support for complex instructions

• 8-bit architecture