## Display Device Driver Reference for OS/2

[prev][next][parent][TOC]

### Physical Video Device Drivers

Video devices are accessed by using Base Video Handlers (BVHs). These BVHs consist of one or more Dynamic Link Libraries (DLLs). In the representative case of the VGA, BVHVGA.DLL manages the device for full-screen sessions, while DISPLAY.DLL (renamed from IBMVGA.DLL) manages the device for the Presentation Manager interface. Although these device handlers are initialized by different sections of the system at this time, they are architecturally compatible and can easily be combined at a later date.