This article is from the FAQ, by with numerous contributions by others.
Yes, to be able to run BETA programs, that use "reals", your machine should
have a built-in FPU, *or* you can install an FPU simulator. Several
free/shareware FPU simulators are available, e.g. SoftwareFPU, which can be
fetched from most macintosh archives, or from the writer, John Neil, at