CS 3843 Computer Organization Prof. Qi Tian Fall

Today Course Syllabus Course web page: What to cover? Lecture notes and slides – Chapter 2: lecture notes most of time – Chapter 3 and 4: lecture slides most of time Chapter 2.1 Conversion between different numbering systems To do list: – Skim Chapter 1 – Read Chapter 2 through – Understand how to convert between different numbering systems

What to Cover? Chapter 2 – Representing and Manipulating Information Chapter 3 – Machine-Level Representation of Programs ATT Assembly Language (IA32) Chapter 4 – Y86 Instruction Set Architecture – Logic Design (combinational and sequential circuits)

Chapter 2 - Representing and Manipulating Information Conversion between different numbering systems – Based R representation and its conversion to decimal – Conversion between decimal, binary, and hexadecimal – Integer and Fraction part Binary representation of n-bit word for signed and unsigned integers – 2’s, 1’s complement and sign/magnitude Boolean operators and logical operators – &, |, ^, ~ – &&, ||, ! Shift operators ( > A, >> L ) Number representations using different data types (int, short, char, long) n-bit IEEE floating-point representation – S, M, E, bias, exp (k bits), frac (n bits) – Single precision and double precision – Normalized, denormalized, special values (+/- inf, NAN) – Largest, smallest value Rounding – Round-to-even; Round-towards-zero; Round-down, Round-up

Chapter 3 - Machine-Level Representation of Programs Understand all the IA32 assembly instructions, different operands and memory addressing modes; Understand assembly codes and write correct comments; Understand conditional codes (ZF, SF, OF, and CF) Identify and correct any mistakes in given assembly instructions; Write C codes from the given assembly codes and vice versa Trace the register values in given assembly procedure

Chapter 4 – Processor Architecture Y86 instruction encodings Translate object code to assembly code Translate Y86 instructions to object code Truth table and basic block diagram of logic gates (AND, OR, NOT, XOR, NAND, NOR), MUX, ALU, 1- bit full adder Function complete set Combinational circuits and sequential circuits SEQ and six basic stages Trace the processing of the instructions