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Release 7.1.1 new features

Pentium III extended floating point support

UnixWare 7 Release 7.1.1 contains enhancements that provide extended floating point and other operations for processors that support them.

Since the introduction of the first Pentium chips, Intel has enhanced the instruction set for their Pentium II 350-450, Pentium II/Xeon, and Pentium III processors. Release 7.1.1 provides support for:

These enhancements were originally released to customers as ptf7406,

The benefits of this support are:

Systems with CPUs that do not support the new instructions will perform as in previous releases. Applications can be written using the new function calls provided for extended floating point support, and can test to see if the processor supports extended floating point instructions.

Documentation for the Intel Pentium instruction set is available from the vendor, and is not shipped with UnixWare 7.

Summary of changes

The following list summarizes the changes made for Release 7.1.1 to support the Pentium III instruction set:

Exceptions to extended floating point support

The following exceptions apply to extended floating point instruction support in Release 7.1.1:


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UnixWare 7 Release 7.1.4 - 22 April 2004