Pdp-12 Instruction List

This document, dated May 1969, provides a reference guide for the Digital Equipment Corporation PDP-12 computer. It includes two primary sections:

• Character Set Format: A table mapping external ASCII characters to their corresponding internal machine representations.
• Instruction List: A reference table of assembly instructions, organized by function category (Add, Multiply, Load, Store, and Shift/Rotate). Each entry includes the mnemonic code, the numerical operation code, a brief description of the function, and the execution time in microseconds.