Note: This document describes only the requirements for running the Old English Aerobics exercises. The Old English Aerobics Reader is now an entirely different program, which requires only a web browser and an Old English-capable font. See here for further details.
Old English Aerobics (OEA) requires a reasonably up-to-date operating system and a Web Browser equipped with Java version 1.1 or higher. It runs best on good hardware (a Pentium or PowerPC chip, 32MB of memory, at least a 600x800 screen, a 56k modem). It has been tested on these platforms:
First download Apple MRJ ("Macintosh Runtime for Java") 2.1.2 or later from www.apple.com/java/ and install it on your machine. (MRJ is free, and if your OS version is 8.6 or later you already have it.) Your machine must have 32MB of memory to run MRJ.
Next, start Internet Explorer, pull down the "Edit" menu and choose "Preferences." Find the "Java" panel in the Preferences dialog and for "Java Virtual Machine" choose "Apple MRJ." Exit and restart Internet Explorer; OEA should now work.
Netscape 4.x for the Macintosh contains an incomplete implementation of Java 1.1, and since there is no way to plug in an alternate version of Java, it is not now possible to run a Java 1.1 applet like OEA in that browser. Netscape 6 and Mozilla may have fixed the problem, but they have not yet been tested.
OEA does run well in Netscape 6 for Linux; be sure to install the full version, which includes Java. Mozilla is a non-commercial browser that is functionally similar to Netscape 6 but lighter and faster. Be sure to install a recent version.
OEA may run well in Netscape under Unix and Unix-like operating systems other than Linux: I have not had the opportunity to test.