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Writing NFB graphical adapter drivers

Dynamic loading mechanism

The X server dynamically loads video drivers when they are needed. The directory where the NFB X server drivers are located is:


SVR5 and SCO OpenServer 5
/usr/lib/X11/dyddx/

AIX 5L
/usr/lpp/gai/nfb/drivers/

On AIX 5L, the vgadd device driver also uses a kernel driver extension for a reset to text functionality. This is located in the /usr/lpp/gai/nfb/ext/ directory. The vga driver saves the current VGA state The vga driver uses the kernel driver extension to get the adapter back in vga mode whenever the X server exits.


© 2005 The SCO Group, Inc. All rights reserved.
OpenServer 6 and UnixWare (SVR5) HDK - June 2005