WarpIN has been developed on OS/2 Warp 4 and is only being tested on that platform. However, no Warp-4-specific features are used, so WarpIN should run on Warp 3 also and maybe even on OS/2 2.x.

WarpIN requires the following OS/2 components:

  1. WarpIN is a Presentation Manager (PM) program, so it cannot be used on a text-mode only OS/2 installation. It doesn't use multimedia however, so MMPM/2 is not required.

  2. Even though WarpIN will start if the Workplace Shell (WPS) is not currently running, many archives will probably attempt to create WPS objects or register WPS classes (which is supported by WarpIN). So it is strongly recommended to have the WPS running when starting WarpIN.

  3. WarpIN has built-in REXX support, so it requires REXX to be installed. This is still an experimental feature, and extensive testing whether Object REXX also works has not been done yet.

    Even if an archive does not use any REXX features, WarpIN currently doesn't start if it cannot find the REXX system DLLs. This might be changed in a future release.

  4. WarpIN has built-in support for package dependencies. If an archive contains packages which require other packages to be installed, WarpIN will tell you about this requirement.