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- IBM is providing software for OS/2 WARP to assist customers concerned with the accuracy
- of the Pentium floating point operations. This software effectively "turns off" the
- floating point support of the Pentium processor. This software detects the specific
- level of the Pentium chip and redirects applications to use floating point emulation.
- However, using floating point emulation can degradate the performance of your
- application(s). For typical spreadsheet and word processor applications, this degradation
- will be minimal. For floating point-intensive applications, such as CAD, the degradation
- will be more noticeable.
-
- For OS/2 Warp customers, this solution works for all OS/2, DOS, and
- Windows applications. This is provided as a device driver that directs application
- floating point instructions to be executed by the available emulators including OS/2's
- built-in emulator for OS/2 applications, the emulators either built into DOS or Windows
- applications or the floating point emulator shipped as part of WINOS2 (OS/2's Windows
- support). Because the application is "informed" that hardware floating point is not
- available, applications that require hardware floating point support will not run.
- The solution completely prevents applications (DOS, Windows, and OS/2) from using the
- Pentium's floating point support.
-
- IBM is making this software available on most of the commercial on-line services, its
- own bulletin board systems, and across the Internet.
-
- To Install type DDINSTAL on the OS/2 command prompt and follow directions.
-
- This install will copy 586npx.sys to the os2 subdir,
- and add a BASEDEV=586NPX.SYS line to your config.sys file.
-
- 586npx.sys - will turn on the OS2 floating point emulator if it detects
- a pentium with a bad math co-processor.
-
- If you want to at a later time enable your pentium math co-processor
- you can REM out the statement in your config.sys that was added
- during the installation, reboot and your Pentium chip will be reenabled
- for floating point processes.
-
-