DECmate II

This document contains a decoded and disassembled listing of the DECmate II primary control ROM, last edited in December 1991 by Charles J. Lasner. The listing covers the assembly of the released ROM set (358E2, 359E2, 360E2) and details the initialization sequence of the DECmate II, including memory loading, I/O instruction definitions for various controllers (Video, Printer, Communications, Keyboard, etc.), and startup procedures. The code primarily targets the DECmate II system and provides low-level definitions for internal and external peripheral operations.