8086 Microprocessor Architecture and Operation Quiz

What is the main advantage of dividing the 8086 CPU into the Bus Interface Unit (BIU) and Execution Unit (EU)?

• It allows for parallel processing
• It increases the clock speed
• It reduces power consumption
• It enables larger memory addressing

What is the purpose of the instruction queue in the 8086 microprocessor?

• To store completed instructions
• To pre-fetch instructions for faster processing
• To handle interrupt requests
• To manage memory segmentation

Which register is used as the default counter in string and loop instructions?

• AX
• BX
• CX
• DX

What is the size of the physical memory that the 8086 can address?

• 64 KB
• 256 KB
• 512 KB
• 1 MB

How many segment registers does the 8086 have?

• 2
• 4
• 6
• 8

What is the purpose of the Stack Segment (SS) register?

• To store program instructions
• To point to the current data segment
• To manage stack operations
• To handle I/O operations

Which flag is used to control the direction of string operations in the 8086?

• Carry Flag
• Zero Flag
• Direction Flag
• Interrupt Flag

What is the purpose of the BHE (Bus High Enable) signal in the 8086?

• To enable the data bus
• To indicate transfer of data over the higher order data bus
• To control the clock speed
• To manage interrupt requests

Which signal is used to acknowledge that slow devices or memory have completed a data transfer operation?

• READY
• HOLD
• INTR
• TEST

What is the function of the ALE (Address Latch Enable) signal in the 8086?

• To enable interrupts
• To indicate the availability of valid address on the address/data bus
• To control DMA operations
• To select between minimum and maximum mode