🚀 go-pugleaf

I've been running some benchmarks (programs to be posted in a few 
days) on my Mac II with some interesting results.

Floating point math  seems  to be about 6 times faster on the Mac 
II  than  on the  Mac  Plus,  which  is  essentally  the  speedup 
anticipated between the 68000 and  the 68020.  However, this does 
NOT seem to indicate that the  68881 co-processor is getting into 
the act.

These benchmarks do their math via SANE,  and  I  had been led to 
believe that System 4.1 would patch SANE to  utilize the 68881 if 
it  was  there,  thereby providing a significant increase in  the 
math  speed,  yet  these  benchmark results don't seem to confirm 
this.   Conversly, the same benchmarks run DRAMATICALLY faster on 
an HD2000, which  DOES  directly utilize the 68881, yielding more 
fuel to the assumption that the Mac II's SANE is NOT doing so.

Apple:  Does System 4.1's SANE on the Mac II utilize the 68881?

Jeff Harrow

Work address:
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