Microprocessors-1 Dr. Nayera Sadek

What are the advantages of the 8086/8088 microprocessors mentioned in the text?

• Hardware multiplication and division

• Larger addressable memory space

• Large number of internal registers which are accessible in 200 ns

• Pipelining Technique

Explain the steps involved in fetching and executing an instruction in the 80x86 architecture.

What are the main purposes of the Bus Interface Unit (BIU) mentioned in the text?

• To keep the prefetch queue filled with instructions

• To generate and accept the system control signals

• To provide the system with the memory address or I/O port number

• To act as window between the EU and memory for data

What is the primary function of the RAX register?

What is the function of the RSP register?

• Used to address data in a LIFO (last-in, first-out) stack memory

• Used with the PUSH and POP instructions and the subroutines

What are the functions of IP (Instruction Pointer) register in microprocessors?

Explain the function of the Carry flag (C) in the Flag Register.

How are memory segments addressed in microprocessors?

Describe the process of generating a memory address in microprocessors.

What are the two big microprocessors families mentioned in the text?

• Intel (80xxx)

• Motorola (68xxx)