Formatxt

Summary

FORMATXT is a utility program designed for the PDP-12 computer system running LAP6-DIAL. Its primary purpose is to convert unformatted source programs—prepared on off-line teletypes and stored on paper tape—into a format compatible with the LAP6-DIAL editor.

Key points include:

• Functionality: The program reads source code from paper tape, strips unnecessary characters, formats the text into four zones, and stores it on LINCtape.
• Operating Procedure: After loading, the program reads the tape until it encounters a terminator character (ASCII 300). Because the resulting data is not immediately recognized by the LAP6-DIAL editor, users must manually clear the working area and add the newly formatted program into the working area using specific commands (CL and AP).
• Limitations: The program supports specific delete commands, which must follow a carriage return to be effective. If a source file is too large for the allocated storage blocks, the program will exit to allow the user to save the first section before processing the remainder.
• Technical Notes: The document includes instructions for interrupting the program, guidance on correcting potential line breaks when files are split across storage, and code modifications required to use a high-speed tape reader.