Octal Debugging for PDP-12 Linctape

ODTAPE is a utility program designed for the PDP-12 computer to assist in debugging LINC tape data. It allows operators to scan tape blocks, display contents (in total, line-by-line, or word-by-word), search for specific words using bit-oriented masks, and modify the contents of words or groups of words. This tool serves as an alternative to the traditional and error-prone "switch method" for manual tape modification. The document includes the program's operating instructions, a list of teletype control commands, and the full assembly language source code for the program.