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Sun Archive FPU-Replacement Page
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Replacing the FPU
The standard FPU for the Sun3-Series is the MC68881. This chip
can be replaced by the Pin and Commandcompatible MC68882 FPU.
Just take the 68881 out of it's socket and put a 68882 in.
The FPU's ID is U101. The empty solder-field to the left is an empty
68030 socket. In the middle you can see the CPU (MC68020-20) and to the
right is the FPU (MC68881-20).
You gain up to 60% Float-Performance or more because the 68882
has a better cycle-time for several FPU-Commands.
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