Compar12

Summary: COMPAR12 is a utility program designed for the PDP-12 computer system running LAP6-DIAL. It allows users to compare source or binary files, or to perform block-by-block comparisons. The program provides three comparison modes: single-word, two-word (for double precision), and three-word (for floating-point files).

The comparison output is displayed on the PDP-12 scope. The utility includes features for referencing data by either name or block number, and it provides various options for navigation, error reporting, and tape unit management. The documentation also includes assembly instructions, noting that the program is composed of two parts (COMP1 and COMP2) and must be saved and loaded as a named file to function correctly with the DIAL-MS I/O routines.