CSE 3322 Computer Architecture Dr. John Patterson 614 NH Office Hours: M , W 11 –12 noon 817-272-3679 john.patterson@uta.edu Grading Policy: Project 25% Exam I 25% Exam II 25% Exam III 25% Homework 5% add on Turn in start of class – no late homework

CSE 3322 Computer Architecture Course WEB SITE crystal.uta.edu/~jpatters Read Chapter 1 Computer Organization and Design

“If we don’t succeed, we run the risk of failure.” Bill Clinton

CSE 3322 Computer Architecture The Low Level knowledge needed by High Level Programmers and Systems Designers

Five Components of Computers Memory Control Input Datapath Output Processor

Input Instructions Memory Control Input C=A+B A Datapath Output B C

Fetch Instructions Memory Control Input C=A+B ADD A,B A Datapath Output B C

Fetch Operands Memory Control Input C=A+B ADD A,B A Datapath Output B

Execute Command Memory Control Input C=A+B ADD A,B A Datapath Output B

Store Results & Output Memory Control Input C=A+B ADD A,B A Datapath

Some Architecture Considerations • Integer or Floating Point • Number of Operands Memory Control Input ADD A,B C=A+B A Datapath Output B A+B A+B

Architecture Design Criteria Performance

Architecture Design Criteria Performance Hardware Costs

Architecture Design Criteria Performance Hardware Costs Performance

Architecture Design Criteria Performance Hardware Costs Performance Instruction Complexity

Architecture Design Criteria Performance Hardware Costs Performance Hardware Software Trade-Offs Instruction Complexity

Architecture Design Criteria Performance Hardware Costs Performance Hardware Software Trade-Offs Etc., Etc., Etc. Instruction Complexity

Evolution of Registers in Datapath Accumulator Ex: 32 Flip-Flops A ADD 300 Add the contents of memory location 300 to the Accumulator A + Memory[300] A

Evolution of Registers in Datapath Accumulator Ex: 32 Flip-Flops A ADD 300 A + Memory[300] A Special Registers were added with special functions

Evolution of Registers in Datapath Accumulator Ex: 32 Flip-Flops A ADD 300 A + Memory[300] A Models or Abstractions Special Registers were added with special functions

Evolution of Registers in Datapath 32 General Purpose Registers

Evolution of Registers in Datapath 32 General Purpose Registers Called a Load-Store or Register-Register machine

Evolution of Registers in Datapath 32 General Purpose Registers Called a Load-Store or Register-Register machine All Registers can be used for any purpose

Evolution of Registers in Datapath 32 General Purpose Registers Called a Load-Store or Register-Register machine All Registers can be used for any purpose Ex: Add any two Registers and put the result in a third Register

Instruction Set Architecture Consists of All of the Instructions and How Each Works

Instruction Set Architecture Consists of All of the Instructions and How Each Works Models or Abstractions

Instruction Set Architecture Consists of All of the Instructions and How Each Works Is the Interface Between Hardware and Software

Instruction Set Architecture Consists of All of the Instructions and How Each Works Is the Interface Between Hardware and Software Defines the Functionality

Instruction Set Architecture Consists of All of the Instructions and How Each Works Is the Interface Between Hardware and Software Defines the Functionality Determines the Inherent Performance

Instruction Set Architecture Consists of All of the Instructions and How Each Works Is the Interface Between Hardware and Software Defines the Functionality Determines the Inherent Performance Determines the Software Compatibility

Software Hierarchical Layers Machine Instruction 101110001100010000001

Software Hierarchical Layers Assembly Language add $2, $5,$2 Assembler Machine Instruction 101110001100010000001

Software Hierarchical Layers High Level Language g = h + A[8] Compiler Assembly Language add $2, $5,$2 Assembler Machine Instruction 101110001100010000001

Software Hierarchical Layers High Level Language g = h + A[8] Models or Abstractions Compiler Assembly Language add $2, $5, $2 Assembler Machine Instruction 101110001100010000001