Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Computer Organization Final Exam Study Final Exam Tuesday, December 12 1:30P – 3:30P Closed Book

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Explain the five major components of a computer and what they do Convert between decimal, binary, hex Describe the MIPS programmer’s view Explain the key MIPS features Given memory contents, find a specific byte or word

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Write a MIPS assembly program segment for a mathematical expression Write a MIPS assembly program segment for a loop Explain the difference between an assembly language instruction and a machine language instruction

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Convert between an effective address and a target address Explain the two passes of an assembler Describe the R, I, and J-format instructions and their fields Convert an assembly language statement to its machine language representation

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Determine the mode and select input values for an LS181 for a specific function Design a 16-bit ALU using the LS181 part Design a logical shifter both left and right Design a 16-to-32 bit sign extender circuit Find the register and/or immediate values for the MIPS datapath and an instruction

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Define: program counter, register file, instruction memory, data memory Identify the number of clocks for the multi- cycle datapath and an instruction Calculate the F max for the MIPS datapath

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Describe the organization (key components) of the MIPS datapath: shared memory, ALU, registers, memory Explain the five MIPS instruction steps and what they do (IF, ID, EX, MEM, WB) Identify instruction steps on a timing diagram

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Determine the minimum clock period for synchronous system: T > T prop + T comb + T set Find F max for a computer system Explain an optimistic action Describe the function of the MIPS control signals

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Determine the MIPS control signals for: –Instruction fetch –Instruction decode, register read, and optimistic branch address –R-type execution and register write back

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Determine the MIPs control signals for: –Memory reference Effective address Memory access (write for store, read for load) Register write back (for load) –Beq execution –Jump execution

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Design a PC with the LS161 List the MIPS state transitions for a set of instructions Describe the organization (key components) of the MDP16 datapath Convert between MDP16 assembly and machine instructions

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Design a register file and determine the timing diagram Explain the goals of a memory hierarchy and the cost-capacity-speed relationships Describe the Principle of Locality Define the characteristics of ROM and RAM components

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Design a ROM and RAM memory system and determine the timing diagram For a memory system, find the length and width of memory components Explain how main memory relates to a direct-mapped cache

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Find the cache contents for a sequence of CPU writes Determine cache hit/miss for a sequence of CPU reads Calculate memory system average latency given hit rate and main/cache memory latencies

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Apply the expression for average latency to different memory designs Explain the performance advantage of write-back cache Determine if cache write-back is required for a sequence of CPU writes Explain how set associative cache operates

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Compare the MIPS and MDP16 datapaths Describe the architecture and implementation options for a computer control unit Explain the advantages of microprogramming and the general steps Describe the function of the MDP16 control signals

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills List the MDP16 control signals to assert for a given operation Find the number of microinstructions for an instruction (same as number of clocks) Determine and interpret the instruction state diagram Microprogram the MDP16 IF, ID steps

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Microprogram the MDP16 R-type, I-type, and J-type instructions, interpret the logic trace Explain how to use the MicroAsm program Design a memory system with ROM and RAM, interpret the logic trace Describe how to pipeline the MIPS computer Find the speedup of a pipelined device

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Show how to modify a controller to support a pipeline Write a subroutine using the jal and jr instructions Explain how an interrupt works and why they are used Describe an interrupt service routine (ISR)

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Find the bandwidth, B/s, of a bus Solve a problem relating the bus rate, size of data, time to transfer information –Data bus –Disk drive –I/O device Explain the key features of a disk: cylinder, head, sector, platter, track, arm, spindle

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Find disk average rotational latency, s Explain the role of bus agents: master, slave Define bus cycle: arbitration, address, data, response Design a serial, parallel bus arbiter List the goals of a RAID system and explain how it works

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Design an I/O agent and interpret the logic trace –Decoding –Reads, writes –Tri-state bus Explain how an RS232 device works and is programmed

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Explain the disadvantages of programmed I/O (busy waits) Explain how direct memory access works –Controller –Interrupt service routine Describe virtual address and physical address Determine the values of a page table

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Skills Explain how the OS handles a page fault Find the average access time of a memory and disk drive system Describe how a Translation Lookaside Buffer (TLB) improves virtual memory

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Test Preparation Study in small groups –Focus on lecture and in-class problems –With serious students, some of same level –Go over problems, set them up, do not number crunch –Leave beer in refrigerator until done Make up a crib sheet: even though not allowed Don’t stay up all night, get good sleep

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Test Preparation Set up a backup for your alarm clock Eat breakfast, lunch, dinner Arrange alternate transportation to campus Bring everything you need for the exam –Pencils –Erasers

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Taking the test Put your name and student number on exam Read over the exam before writing Read each problem carefully, understand what was asked Show your work –Provide enough detail –Don’t do problem “in your head”

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Taking the test Think partial credit –Put something down for each question –If you are unclear, write down what you might do to solve the problem Stay in motion, budget your time –Work on a problem until you get stuck –Give it a couple more minutes, then move on –Return to the problem later

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Taking the test Keep your work legible If you don’t understand a problem, ask the instructor Don’t panic –If you find yourself sweating, hyperventilating, take a break –Take a few deep breaths, stretch –Then return to the exam

Fall EE 333 Lillevik 333f06-s3 University of Portland School of Engineering Taking the test Check your exam at the end –Did you answer every question & part? –Do your answers seem reasonable? –Do your answers check out? Hand in your paper when time is called