OS/8 Macrel/Linker, Version 1A

This document describes the OS/8 Macrel/Linker, Version 1A, a machine language programming system that is a superset of the OS/8 PAL8 assembler and absolute loader. Macrel is a macro assembler that produces relocatable modules, and Linker is a linking loader. Macrel offers features such as macro definition, conditional assembly, program sectioning, and improved text creation. Linker creates executable image files, provides structure for program overlays, and links global references between sections. The minimum hardware requirement includes a PDP-8/A, E, F, or M processor with 8K words of memory, mass storage, and a console terminal, or a DECstation 78/40. Prerequisite software includes OS/8 Operating System, Version 3C or later, or OS/78 Operating System, Version 1 or later. The document also outlines ordering information, specifying media options (DECtape or Floppy Disk) and standard options including single-use licenses and documentation.