ALU. ALU: Tasks performed in the control states OperationState addDecode op, op=add/sub/and/or/xor. Alu addAluI rel, rel=lt, eq, gt, le, ge, ne. TestI.

Slides:

Advertisements

Similar presentations

Advertisements

IF statement (i) Single statement. IF ( logical expression ) statement Example: read(*,*) a if (a. lt. 0) a = -a write(*,*) a Or read(*,*) a if (a < 0)

Chapter 1. Basic Structure of Computers

DLX computer Electronic Computers M.

Control path Recall that the control path is the physical entity in a processor which: fetches instructions, fetches operands, decodes instructions, schedules.

Arithmetic Logic Unit (ALU)

ELEN 468 Advanced Logic Design

CPSC Compiler Tutorial 8 Code Generator (unoptimized)

DLX Processor מבנה המחשב + מבוא למחשבים ספרתיים תרגול 13#

Computer Systems. Computer System Components Computer Networks.

Homework #5 + solution. Question 1: Convert to DLX assembly (Assume that variables i, k correspond to registers 19 20, and that the array save starts.

The simplified DLX The datapath & control story: What happens in each control state.

Midterm Wednesday Chapter 1-3: Number /character representation and conversion Number arithmetic Combinational logic elements and design (DeMorgan’s Law)

Spring 2006EE VLSI Design II - © Kia Bazargan 187 EE 5324 – VLSI Design II Kia Bazargan University of Minnesota Part IV: Control Path and Busses.

10/18/2005Comp 120 Fall October Questions? Instruction Execution.

Computer Structure - Datapath and Control Goal: Design a Datapath  We will design the datapath of a processor that includes a subset of the MIPS instruction.

The GPR Environment (Mueller & Paul) GPR_WE. The GPR Environment (Cont.) GPR_WE Drivers to enable the writing of a value to the bus.

Design and Synthesis of a RISC Stored-Program Machine

KEY COMPONENTS OF A COMPUTER SYSTEM ANDREW LOLAVAR.

The von Neumann Model – Chapter 4 COMP 2620 Dr. James Money COMP

Ellen Spertus MCS 111 October 11, 2001 Floating Point Arithmetic.

Computer Science 210 Computer Organization The von Neumann Architecture.

Computer Organization CS224 Fall 2012 Lesson 26. Summary of Control Signals addsuborilwswbeqj RegDst ALUSrc MemtoReg RegWrite MemWrite Branch Jump ExtOp.

Von Neumann Machine Objectives: Explain Von Neumann architecture:  Memory –Organization –Decoding memory addresses, MAR & MDR  ALU and Control Unit –Executing.

The Central Processing Unit (CPU) and the Machine Cycle.

Model Computer CPU Arithmetic Logic Unit Control Unit Memory Unit

1 Instruction memory is used to store a program Processor gets one instruction at a time It stores it locally (like) I0, I1 registers PC points to next.

Computer Architecture Memory, Math and Logic. Basic Building Blocks Seen: – Memory – Logic & Math.

Computer Science 101 Computer Systems Organization ALU, Control Unit, Instruction Set.

Computer Science 101 Computer Systems Organization Machine Language Examples Entire machine.

Electrical and Computer Engineering University of Cyprus LAB 2: MIPS.

A four function ALU A 00 ADD B MUX SUB 11 Result AND OR

September 26, 2001Systems Architecture I1 Systems Architecture I (CS ) Lecture 2: Implementation of a Simplified Computer Jeremy R. Johnson Wednesday,

COMPILERS CLASS 22/7,23/7. Introduction Compiler: A Compiler is a program that can read a program in one language (Source) and translate it into an equivalent.

CENTRAL PROCESSING UNIT Written by: Gizem Gulsen.

Dale & Lewis Chapter 5 Computing components

CBP 2006Comp 4070 Concepts and Philosophy of Computing 1 Wrestling with Complex Stuff. With the Correct Approach, even the smallest guy will succeed!

Computer Organization and Assembly Languages Yung-Yu Chuang 2005/09/29

Circuit Optimization CS 3220 Fall 2014 Hadi Esmaeilzadeh Georgia Institute of Technology Some slides adopted from Prof. Milos Prvulovic.

COM181 Computer Hardware Lecture 6: The MIPs CPU.

Jeremy R. Johnson William M. Mongan

MIPS Processor.

Electrical and Computer Engineering University of Cyprus

CS 270: Mathematical Foundations of Computer Science

Lecture 13 - Introduction to the Central Processing Unit (CPU)

Computer Science 210 Computer Organization

ELEN 468 Advanced Logic Design

Implementing Instructions

Five Execution Steps Instruction Fetch

MIPS Instructions.

Decode and Operand Read

Computer Architecture

Design of the Control Unit for Single-Cycle Instruction Execution

The fetch-execute cycle

Computer Science 210 Computer Organization

Functional Units.

MIPS Processor.

Control Unit Introduction Types Comparison Control Memory

Systems Architecture I (CS ) Lecture 2: A Simplified Computer

Instructions Instructions (referred to as micro-instructions in the book) specify a relatively simple task to be executed It is assumed that data are stored.

Data Hazards Data Hazard

Computer System Design Lecture 5

The Von Neumann Architecture Odds and Ends

Review Fig 4.15 page 320 / Fig page 322

5.5 A Multicycle Implementation

Computer System Design Lecture 5

Drawbacks of single cycle implementation

Control Unit (single cycle implementation)

COMS 361 Computer Organization

MIPS Processor.

Presentation transcript:

ALU

ALU: Tasks performed in the control states OperationState addDecode op, op=add/sub/and/or/xor. Alu addAluI rel, rel=lt, eq, gt, le, ge, ne. TestI addAdr. Comp. addB.Taken addJR addSavePC addJALR

ALU: Control Signals Signals that control the functionality of the ALU: ALUF[2:0] add (active during states: Decode, AluI, Adr.Comp., B.Taken,SavePC, JR, JALR). test (active during states: TestI). ALUF[2:0] – arithmetic / logical ALU operations 011add 010sub 110and 101or 100xor ALUF[2:0] – test conditions 001gt 010eq 011ge 100lt 101ne 110le IR[2:0] = func[2:0] IR[28:26] = opcode[2:0]

MUX(32) OR(32) AND(32) XOR(32) MUX(32) Comparator(32) OR INV MUX(32) MUX(3) ALU: Implementation Next slide

ZERO(32) AND INV AND INV OR AND OR ALU: Implementation (cont’) Comparator

“Register B” The instructions in which register B is loaded: add sub and or xor store Register B is not involved in computations during instructions in which it need not be loaded. Therefore, functionality is correct. Loading register B always (during Decode state), shortens the length of the path in the Control State Machine when executing instructions that need register B loaded.