Instruction Representation Review (1/2) °Logical and Shift Instructions • Operate on bits individually, unlike arithmetic, which operate on entire word. • Use to isolate fields, either by masking or by shifting back and forth. • Use shift left logical, sll,for multiplication by powers of 2 • shift right arithmetic, sra, close but wrong for divide […]
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Decisions in C / Assembly Language Review (1/2) °In MIPS Assembly Language: • Registers replace C variables • One Instruction (simple operation) per line • Simpler is Better • Smaller is Faster ° Memory is byte-addressable, but lw and sw access one word at a time. ° A pointer (used by lw and sw) is
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CS Sample MidTerm Examination Student Name: Signature: CS COMP-273: Sample MidTerm Examination Question 1 (Digital Circuits). [30%] Your task is to design a digital circuit which implements a version of a shift logical left or Student Name: Signature: a shift logical right. Let A2,A1,A0 represent the 3 bits of a 3-bit register, where A2 is
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Instruction Representation 2 Review °MIPS defines instructions to be same size as data (one word) so that they can use the same memory (can use lw and sw). °Machine Language Instruction: 32 bits representing a single instruction R I opcode rs rt rd shamt funct opcode rs rt immediate °Computer actually stores programs as a
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5 – sequential logic 1 Jan. 25, 2016 Sequential Circuits All of the circuits that I have discussed up to now are combinational digital circuits. For these circuits, each output is a logical combination of the inputs. We have seen that these circuits can do arithmetic and other operations. But these circuits are not powerful
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C/Assembler Arithmetic and Memory Access Overview °C operators, operands °Variables in Assembly: Registers ° Addition and Subtraction in Assembly °Memory Access in Assembly Review C Operators/Operands °Operators:+,-,*, /,%(mod); •7/4==1, 7%4==3 ° Operands: • Variables: fahr, celsius • Constants: 0, 1000, -17, 15.4 °Assignment Statement: Variable = expression • Examples: celsius = 5*(fahr-32)/9; a = b+c+d-e;
Logical and Shift Operations Overview °Logical Instructions ° Shifts Bitwise Operations (1/2) °Up until now, we’ve done arithmetic (add, sub,addi ), memory access (lw and sw), and branches and jumps. °All of these instructions view contents of register as a single quantity (such as a signed or unsigned integer) °New Perspective: View contents of register
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Chapter 3 Transport Layer Computer Networking: A Top-Down Approach 8th edition Jim Kurose, Keith Ross Pearson, 2020 Transport Layer: 3-1 Transport layer: overview Our goal: §understand principles behind transport layer services: • multiplexing, demultiplexing • reliable data transfer • flow control • congestion control §learn about Internet transport layer protocols: • UDP: connectionless transport •
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Task 1: Find all words in a text (15 pts) In this task you will find all words in a text file and list each word found in the program’s output. You are provided with an example input file (input words.txt) that follows the rules described in (§1.6) and a MIPS assembly file (find words.s)
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SCHOOL OF ENGINEERING DIGITAL SYSTEM DESIGN 4 ELEE10007 Exam Date: 21/05/2018 From and To: 14:30 – 16:30 Exam Diet: May 2018 Please read full instructions before commencing writing Exam paper information Copyright By PowCoder代写 加微信 powcoder • This paper consists of TWO sections • Candidates should attempt THREE questions, chosen as follows: • Section A: