A Synthesizeable VHDL Model of the 1750A Integer Subset

1/29/98


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Table of Contents

A Synthesizeable VHDL Model of the 1750A Integer Subset

Introduction

Presentation Outline

Goals

Environment

Mil-Spec-1750A

1750A (cont.)

Fairchild F9450

1750A VHDL Model

Model Bus Diagram

Register Definitions

Entity Hierarchy

Comments on Model Hierarchy

Control Block Diagram

Comments on Control

Comments on Control (cont.)

Model Testing

SEAFAC Tests

Regression Test System

Regression Test Results

Sample Execution Times

Synthesis Cell/CLB Counts

Comments on Synthesis Results

Comments on Synthesis (cont)

Synthesis Tweaking

Synthesis Tweaking (cont.)

What is Left?

Project CLB Counts if FP Added

Would Microcode Approach Reduce CLB Count?

Would Microcode ... (cont.)

In Closing

Author: Bob Reese

Email: reese@erc.msstate.edu

Home Page: http://www.erc.msstate.edu/mpl

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