Article ID: 64478 - View products that this article applies to.
This article was previously published under Q64478
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Mathematica 387 and Mathlab 386 do not run properly in Microsoft Windows version 3.0 protected modes (standard and enhanced). These programs use the VCPI (virtual control program interface) to access extended memory that conflicts with Windows in protected mode (standard and enhanced).
The VCPI specification allows MS-DOS applications to directly access extended memory on 80386 machines. Windows uses the DPMI (DOS protected mode interface) specification. The DPMI specification allows MS-DOS applications to directly access memory on 80286 and 80386 machines. Many programs that use the VCPI specification, including Lotus 123 version 3.0, run correctly in standard mode Windows. The performance of an MS-DOS application that uses the VCPI specification depends on how closely the actual application follows the VCPI specification.
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