KeMo

OSX

Win

KeMo

Introduction

KeMo is a set of functions to help writing reaction time experiments on the Mac. Functionality consists of the following:

A timer with 20 microsecond resolution.
Polling functions for ADB devices, such as keyboards and mice, with ± 1.4 to 2.1 msec accuracy, depending on your Mac (as opposed to the ± 8 to 16 msec accuracy that you get with "normal" Toolbox functions like GetKeys).
A screen refresh synchronization function for all Macs.
Functions that hide and show the menu bar.
A function to make all other applications quit (System 7 required).

KeMo was developed by Dan Costin. He is no longer working in experimental psychology and he no longer has time or inclination to support the package. For this reason, he has agreed to make KeMo freely available and granted permission for us to post it here. He retains the copyright (see below). Please don't pepper Dan (or us) with support questions.

In the context of the Psychophysics Toolbox, the most important function provided by KeMo is the quick polling of ADB devices. We do not currently have a way to do this in the Toolbox. Presumably you could use the KeMo source to add a MEX file that provided this functionality. If you do so, please send us the result and we will fold it into the distribution.

There are three archives associated with KeMo, library, THINK C (original) source, and Code Warrior source (translated from the original by a third party). These are distributed in their original form as we received them from Costin.

Download KeMo Library (version 1.5)
Download KeMo THINK C source (version 1.5).
Download KeMo Code Warrior source (version 1.5).

Copyright

The intro was adapted from Costin's KeMo README file.

The KeMo package is copyright (c) Dan Costin 1992-1993. The library and source packages may distributed freely. You may incorporate the source into other programs, as long as you preserve the original copyright and note as to where the archives may be obtained. KeMo (or modified versions thereof) may not be sold without permission. For this purpose, send mail to Dan Costin. To make the software as widely available as possible, permission is granted to include the KeMo archives, intact, in CD-ROM collections selling for less than $100, but Dan Costin retains all rights.

This notice supersedes the notices enclosed in the archives, which date from a time when Costin was supporting the routines.

The packages are distributed as is, without any warranty implied. No liability is accepted for any damage or loss resulting from the use of these routines.

visitors since 20 March 2000.

David Brainard, Denis Pelli & Allen Ingling.
psychtoolbox@yahoogroups.com

3 September 1997