Contents
Chapter 2 | System Components | 13 |
| Redundancy CPU | 13 |
| CPU Architecture | 14 |
| CPU Features | 15 |
| CPU Mode Switch | 16 |
| Memory Protect Keyswitch | 17 |
| CPU Status LEDs | 17 |
| Battery Connectors | 17 |
| Serial Port Connector | 18 |
| Expansion Memory Board | 18 |
| Redundancy Communications Module | 19 |
| RCM Features | 19 |
| RCM System Status LEDS | 20 |
| Unit Selection Pushbutton | 21 |
| RCM Connectors | 21 |
| Bus Transmitter Module | 22 |
| LED Status Indicators | 22 |
| BTM Connectors | 23 |
| Bus Receiver Module | 23 |
| I/O Bus Signal Termination | 24 |
| LED Status Indicators | 24 |
| BRM Connectors | 24 |
| Genius Bus Controller | 24 |
| Genius Bus Controller User Features | 25 |
| LED Status Indicators | 25 |
| GBC Connectors | 26 |
| Racks | 26 |
GFK±0827 | Series 90±70 Hot Standby CPU Redundancy User's Guide ± December 1993 |
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