Extended Arithmetic Element

This manual, dated May 1971, details the KE11-A Extended Arithmetic Element, a hardware component designed to accelerate numerical calculations for PDP-11 systems by performing multiplication, division, and shift operations.

Key sections include: - General Description and Installation: Provides an overview of the KE11-A, specifications, and installation procedures within a PDP-11 mounting box. - Programming the KE11-A: Details the register set (Multiplier-Quotient, Accumulator, Step Counter, Status Register, and internal X register), address assignments, and specific instructions for executing operations. - Theory of Operation: Explains the binary 2's complement arithmetic used, and provides step-by-step algorithms and flowcharts for multiplication, division, and shifting. - General and Detailed Hardware Description: Describes the functional logic, including register control, timing, and data flow, supplemented by signal logic and diagnostic information. - Maintenance: Outlines diagnostic tools, including the KM11 maintenance module set and specific diagnostic programs to assist in troubleshooting hardware issues.