Patches and a Utility Program for Lab-8

This document contains a series of technical notes, patches, and utility programs designed for the Digital Equipment Corporation LAB-8 system. The primary contents include:

• Averager Patches: Instructions and code for modifying the Basic Averager to enable data output to a high-speed paper tape punch, as well as patches for the ADVANCED Averager to modify contingency input handling and to remove specific display calibration marks.
• RC Clock Calibrator: A utility program that continuously displays the RC clock rate, capable of running as a standalone tool or a subroutine.
• Data Dump Utility: Detailed instructions for a patch that allows for the dumping of accumulated average data from the ADVANCED Averager (Section III) to a paper tape punch.
• X-Y Plotter Overlay: Documentation and source code for an overlay to Section 3 of the ADVANCED Averager, allowing the system to drive an X-Y analog recorder.
• APE Program: Appendices (A-1 through A-17) provide source code for the "APE" (Average Punchout Evaluation) program and its associated subroutines, which are used for merging data tapes and evaluating/printing high-speed punch output.

The document also includes a correspondence letter from Charles P. Merrill of Digital Equipment Corporation, dated May 20, 1970, regarding these technical updates.