FP11-F Floating-Point Processor Technical Manual

This document serves as the technical reference for the FP11-F Floating-Point Processor (M7093 hex board), a hardware acceleration unit for the PDP-11/44. It covers the processor's architecture, including floating-point data formats (single and double precision), the program status register, and the interface protocol between the FP11-F and the central processor. Detailed sections explain arithmetic algorithms for addition, subtraction, multiplication, and division. It also includes comprehensive descriptions of the internal data path, control store logic, and instruction set, which provides 32- and 64-bit precision floating-point operations. Finally, the manual details installation, diagnostic procedures, and maintenance tools for the processor.