Multiply and Divide Formats

This document from 1969 outlines the engineering specifications for signed and unsigned, double precision, and floating point multiply and divide operations on the PDP-11. It compares 'zero' and 'non-zero' data formats, ultimately arguing in favor of the non-zero format because it facilitates emulation of various arithmetic operations, including mantissa calculations in floating point multiply and divide, as well as double precision addition, subtraction, negation, normalization, and shifts.