Author: David Hale, Psychology Department, The Queen's University of Belfast, Belfast, Northern Ireland

A simple overlay of great use in elapsed time measurement which takes advantage of the ability of the KW12A clock to be stopped by an external event on any of the three clock trigger input channels. The routine assumes control of the clock and sets it counting from zero. An external event stops the clock and records which of the three possible events was present. The clock time and event code can then be read into the user's program at his leisure.

Minimum Hardware: 8K PDP-12, dual LINCtapes, KW12A, VR14

Other Programs Needed: FOCAL-RT (DECUS 12-80) (On tape offered)

Source Language: DIAL

Catalog: May 1975