## Display Device Driver Reference for OS/2

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### Development of PM Display Drivers

This section covers the development of DBCS 16-bit and 32-bit PM display drivers and the modifications necessary for the display adapter cards and for DBCS enabling. The developer should have a basic knowledge of the PDI ( Presentation Driver Interface), which defines the interface between the graphics engine and the presentation driver. For further information on the PDI, refer to the OS/2 Presentation Device Driver Reference.