MF20/MG20 MOS Memory Subsystem

This technical manual provides comprehensive documentation for the MF20 and MG20 MOS Memory Subsystems used in KL10-based computer systems. It covers the following key areas:

• System Overview: General descriptions, key features (ECC, spare bit substitution, battery backup), and system configurations.
• Installation and Planning: Detailed site preparation requirements, mechanical specifications, and step-by-step installation procedures for various memory configurations (MF20-LA/LB, MF20-LC/LD, MF20-LH/LJ, MF20-LK/LL, MF20-E, and MG20 models).
• Operation and Programming: Operator controls, manual and program operating procedures, and a detailed description of the eleven diagnostic functions used for configuring and fault isolation.
• Technical Description: Detailed theory of operation, including functional block diagrams, timing diagrams, signal glossaries for the MF20 and MG20 logic modules (M8574, M8575, M8576, M8577, M8579, and M8570), and operation of the KW20 Master Oscillator.
• Maintenance: Preventive maintenance procedures and a corrective maintenance strategy utilizing the diagnostic software (DHKBF, DHKBG, MEMCON, DFMMH, SYSERR, and TGHA) to isolate faults to the field-replaceable unit level, including removal and replacement procedures.