Table of Contents
RASSP Methodology Overview Module 29 RASSP Education & Facilitation Program M29_01_00 August 1997
Rapid Prototyping Design Process
Module Goals
RASSP Methodology Overview Outline
RASSP Methodology Overview Outline
RASSP Methodology Overview Outline
RASSP Technical Approach
RASSP Methodology
RASSP - How It Relates to Methodology
RASSP - How it Relates to Methodology (Cont.)
RASSP Methodology
RASSP Design Concepts and Enablers
Iterative Virtual Prototype - the "Spiral" Model
“Spiral” Methodology Chart
RASSP Methodology Overview Outline
Detailed Section Outline
Detailed Section Outline (Cont.)
Conventional Design Process
Current Practice
System Definition
System Definition (Cont.)
Hardware Design
Hardware Design (Cont.)
Software Design
Software Design (Cont.)
Hardware/Software Integration
Detailed Section Outline
Proposed Approach
Rationale for New Process
RASSP Target
Features and Limitations of Existing Codesign Methodologies
Detailed Section Outline
RASSP Methodology: Virtual Prototyping
Representation of a RASSP System
Virtual Prototyping
Other RASSP E&F Modules of Interest
Definitions
Virtual Prototyping Should Provide the Following
Detailed Section Outline
Virtual Prototyping Executable Req./Spec.
Executable Requirements and Specifications
Benchmark SAR Executable Requirement
Goals of Processor
Goals of the Test Bench
Elements in Executable Specification of the System Model
Relationship Between Executable Requirements and Specifications
Detailed Section Outline
Virtual Prototyping
Data/Control Flow Modeling
Data/Control Flow Graph Generation
Flow Graph Generation and Simulation Mechanism
Detailed Section Outline
Virtual Prototyping
Embedded-System HW/SW Design, Integration and Test
Autocoding
Automated System-level Design Environment
HW/SW System Prototyping Costs
The Effect of Packaging on Prototyping Costs
REVIC Software Development Cost/Schedule Model
REVIC Software Development Cost/Schedule Model
Design Example: SAR Processor Requirements
Dependence of Objection Functions on Customer Class
SAR Multiprocessor
Manual Tradeoffs
Design Tradeoff Case Study: SAR Processor with COTS Multiprocessor Cards
Detailed Section Outline
Performance Modeling
Architecture Selection Process
Performance Modeling in System-level Design
SCI (IEEE Std 1596-1992) Component Elements
SCI (IEEE Std 1596-1992) Multiprocessor Performance Simulation
Scalability Tradeoffs
Performance Modeling of SAR Processor
Detailed Section Outline
Virtual Prototyping
Virtual Prototyping at the Fully Functional and Detailed Levels
Virtual Prototyping: Fully Functional Level
Efforts in HW/SW Integration and Test Relative Benefits
Simulation Performance vs Fidelity
Case Study: Design IRST System Prototype
Case Study IRST: System Tests
Case Study IRST: System Tests (Cont.)
Case Study IRST: System Tests (Cont.)
Case Study: MCV9 Processing Boards
Case Study MCV9: Test Process
Case Study MCV9: Phase II/III Integration Tests
MCV9 Subsystem Architecture
MCV9 VHDL Creation
Case Study: i860XP RISC
Case Study i860: Functionality Breakdown
Designated Processor Tree
Case Study MCV9: Subsystem-level Test
Case Study MCV9: Phase I Integration Objectives
Case Study MCV9: Phase II/III Integration Objectives
Case Study MCV9: Timing Diagram of RACEway Write
Case Study MCV9: Simulation Results
Case Study IRST: Simulation Results
Case Study IRST: HW/SW Integration
Detailed Section Outline
Section Outline
Model Year Chart
Model Year Architecture
Model Year Architecture
RASSP Model Year Architecture within the Design Process
HW/SW Codesign - Key Part of Model Year Architecture
Components of Model Year Architecture
Model Year Architecture Approach
High-Level Functional Architecture
Interface Approach
Functional Interface Example Applied to RNI
Approach to Standard Virtual Interface (SVI)
Guidelines for Using SVI
Applications of SVI
Implications of Layering
Design Guidelines and Constraints
Architectures for Testability
Design For Test Tasks
Test Architecture
Test Architecture (Cont.)
Software Overview
Software Architecture Process Goals
Software Architecture Requirements
Software Architecture
Software Architecture (Cont.)
Software Architecture (Cont.)
Software Architecture (Cont.)
Software Architecture (Cont.)
Software Architecture Diagram
RASSP Graph-Based Software Development Scenario
Detailed Section Outline
What Is a Re-use Data Element?
What is a Re-use Data Elements? (Cont.)
How Re-use Fits into RASSP
Contents of Reuse Library
Library Population
RASSP Methodology Overview Outline
Results to Date
IRST Virtual Prototyping Results
Results to Date
RASSP Methodology Overview Outline
Preliminary ARPA Assessment
Summary: Addressing System Level Design Enables Achievement of 4x
Summary
Exercises
References
|