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Re: Innovative Systems Floating Point Engine Rev B 1988

a2aviator@gmail.com wrote:

It's a math co-processor card with a SANE patch.

A lark item on a IIgs.. the other was the AE FastMath. Though the FPE
was a better over all solution. The AE card was over-complificated.


If such a card is used to accelerate Applesoft, precision will
be reduced, since the Applesoft FP container is 5 bytes (32-bit
mantissa + 1 bit implied), and the largest SANE type that will fit
is 4 bytes (24-bit mantissa + 1 bit implied).  (Of course, that's
discounting the documented Applesoft FP bugs. ;-)

AppleWorks will love it, since it already uses SANE in software.

-michael

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Home page:  http://members.aol.com/MJMahon/

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