FP11-B floating-point processor maintenance manual

This maintenance manual provides comprehensive technical information for the FP11-B Floating-Point Processor, specifically designed for the PDP-11/45. The document includes:

• System Overview: Fundamentals of floating-point arithmetic, block diagrams, and physical configuration.
• Interface: Detailed signals and timing for CPU/FPP interaction.
• Data and Formats: Specifications for integer and floating-point formats, including status registers and instruction sets.
• Control ROM: Explanation of the microprogram control, flow diagrams, and field descriptions.
• Algorithms: Detailed logic behind addition, subtraction, multiplication, and division, including state diagrams and timing.
• Logic Descriptions: In-depth breakdown of logic modules (FRL, FRH, FRM, FXP).
• Maintenance: Guidance on using the maintenance module, special maintenance instructions (like LDUB and LDSC), console displays, and example diagnostic programming.