Excel 1.5 on a Macintosh IIx running System v6.0.2 currently does not recognize
the 68882 coprocessor.
The information returned by the SysEnvirons call has been changed slightly in
System 6.0.2, and that is what is causing the problem. (This situation does not
occur when using System Software 6.0.)
Microsoft is aware of the problem. Contact them for further information.
(NOTE: The 68882 FPU is a superset of the 68881 FPU, and code written for the
68881 works properly with 68882.)