On Wed, 6 Nov 1996 briggs@puma.macbsd.com wrote:

.. > > 1)  What does the FPSP compile option do?  040 floating point software?
.. > >     Do I need this to use an 040 CPU?
.. > 
.. > This is only required if your Daystar is a "light" 040 with no FPU,
.. > ie. a 68LC040.
.. 
.. Nope.  You need FPU_EMULATE if you have an LC040.  If you have a full
.. 040, you need FPSP because it emulates instructions that were in the
.. 68881 and 68882 but not in the FPU on the 040.
.. 
.. -allen
.. 

Just to make everything explicit: 

68030 needs neither FPU_EMULATE nor FPSP

68040 needs FPSP

68LC040 needs FPU_EMULATE, but -- does it need FPSP as well ??

- Erik Bertelsen