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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INF2C Computer Systems Coursework 1 MIPS Assembly Language Programming Deadline: Fri, 23 Oct (Week 5), 16:00 Instructors: Boris Grot, Aaron Smith TA: Dmitrii Ustiugov This assignment will introduce you to writing programs in MIPS assembly. You will write five MIPS programs and test them using the MARS IDE introduced in Lab 1. This is the
INF2C Computer Systems Coursework 1 MIPS Assembly Language Programming Deadline: Fri, 23 Oct (Week 5), 16:00 Instructors: Boris Grot, Aaron Smith TA: Dmitrii Ustiugov This assignment will introduce you to writing programs in MIPS assembly. You will write five MIPS programs and test them using the MARS IDE introduced in Lab 1. This is the
INF2C Computer Systems Coursework 1 MIPS Assembly Language Programming Deadline: Fri, 23 Oct (Week 5), 16:00 Instructors: Boris Grot, Aaron Smith TA: Dmitrii Ustiugov This assignment will introduce you to writing programs in MIPS assembly. You will write five MIPS programs and test them using the MARS IDE introduced in Lab 1. This is the