MF11-U/UP Core Memory System

This maintenance manual provides technical information for the MF11-U (non-parity) and MF11-UP (parity) core memory systems. The document covers:

• General Description: Physical and functional descriptions, specifications, and module utilization.
• 16K Unibus Timing Module (M8293): Detailed operation of memory protection, mode selection, device/word selection, and control logic.
• Driver, Sense and Stack Modules: Memory operation, X and Y decoding, read/write current generation, and sense amplifier operation.
• MF11-UP with Parity: Specific details for the parity version, including the M7259 Parity Controller, specifications, and interleaving.
• Installation and Maintenance: Procedures for installation, preventive maintenance, troubleshooting, and diagnostic testing (MAINDEC).
• Appendices: Detailed descriptions of integrated circuits used in the systems.