4. (a) Name three features of the 8086 that were improvements over the 8080/8085. (b) What is the major difference between 8088 and 8086 microprocessors ? (c) Explain the functions of the EU and the BIU. (a) What is pipelining, and how does it make the CPU execute faster ? (e) List the 16-bit registers of the 8086. 5. (a) Write the Assembly language instruction to move value 1234H into register BX (b) Write the Assembly language instructions to add the values 16H and ABH. Place the result in register AX (e) No value can be moved directly into which registers ? (d) What is the largest hex value that can be moved into a 16-bit register? Into an 8-bit register? What are the decimal equivalents of these hex values