MPMC Quiz 1

Which of the following is the correct sequence of operations in a microprocessor?

• Opcode fetch, memory read, memory write, I/O read, I/O write

• Opcode fetch, memory write, memory read, I/O read, I/O write

• I/O read, opcode fetch, memory read, memory write, I/O write

• I/O read, opcode fetch, memory write, memory read, I/O write

What is data bus width of 8086 microprocessor?

• 32 bits
• 64 bits
• 8 bits
• 16 bits

what is the purpose of instruction byte queue in 8086 microprocessor?

• To execute arithmetic operations
• To store data from memory
• To prefetch instructions from memory and improve performance
• To control input/output operations

In 8086 microprocessor, address bus width size is

• 16 bits
• 32 bits
• 20 bits
• 8 bits

XCHG instruction on 8086 is used for

• Adding the contents of two registers
• Exchanging the contents of two registers or memory locations
• Subtracting the contents of two memory locations
• Multiplying the contents of two registers

Which operations are not performed by ALU of 8086 microprocessor ?

• Input/output and memory-related operations
• Logical operations
• Multiplication and division operations
• Addition and subtraction operations

What is maximum addressable size of RAM interfaced with 8086 microprocessor ?

• 512 KB
• 2 GB
• 256 KB
• 1 MB

16 bit flag register of 8086 microprocessor is responsible for

• Controlling the input/output operations
• Storing status flags
• Managing the memory allocation
• Executing arithmetic operations

Operating frequency of 8086 microprocessor is

• 1 kHz
• 10 MHz
• 2 GHz
• 5 MHz

SF in 8086 microprocessor is called as

• Speed Flag
• Software Flag
• Sign Flag
• System Flag