NorthStar HORIZON Random Access Memory, User Manual

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HRAM USER/TECHNICAL MANUAL
CONTENTS
Section Page___
1 INTRODUCTION
1.1 General Description 1-1
1.2 Warranty Information 1-1
1.3 Specifications 1-3
2 INSTALLING AND REMOVING THE HRAM
2.1 Installation 2-2
2.2 Removal 2-3
3 IMPLEMENTING HRAM OPTIONS
3.1 Example Memory Configurations 3-3
3.1.1 Example 1: Three Banks 3-3
3.1.2 Example 2: Three Banks 3-5
3.1.3 Example 3: Four Banks 3-6
3.2 Bank Switching 3-7
3.2.1 Designating Switched Areas 3-7
3.2.2 Designating I/O Port Control Bit 3-9
3.2.3 Software Instructions 3-10
3.2.4 Bank Status on Reset 3-11
3.3 Memory Address Switches 3-13
3.3.1 Revision B Board 3-13
3.3.2 Revision E Board 3-14
3.3.3 32K Board 3-18
3.4 First Quadrant Option (Revision E Board only) 3-19
3.5 Parity Checking 3-20