Writing NFB graphical adapter drivers

Setting up the grafinfo file (SVR5 and SCO OpenServer 5)

The best way to create a new grafinfo(DSP/4dsp) file is to copy an existing grafinfo file, then modify the lines in the header section to match your adapter(s). Select a grafinfo file for an adapter that is similar to yours and check the various procedures defined for each adapter mode to see if they will work for your adapter.

For example, check CLASS. Compare the new mode's video memory base address and address window to other mode descriptions in the grafinfo file. If the new video memory requirements match, use the existing CLASS statement. Otherwise, you must define a new class.

For a list of the procedures to check in grafinfo files, see grafinfo.

CAUTION: grafinfo files must be located under the /usr/lib/grafinfo directory, in a subdirectory whose name matches the vendor_name in the file. The file itself is named to match the adapter_model string with a .xgi suffix.

If the vendor_name or adapter_model strings do not match (case-insensitive) the Video Configuration Manager will not display your adapter during configuration.