allowed users to run 386-dependent software which would not normally run on an XT or AT class machine. Examples of such programs include: Ventura 2.0 Desktop Publishing Software (with Hercules monochrome graphics), Autocad 386, Windows 3.1 (Inboard 386/AT model only). The Intel Inboard 386/PC was also the only upgrade solution which allowed owners of XT-class machines to utilize extended memory. References External links How to 386 Your AT: Intel Inboard 386/AT Compatibility cards 80386