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# Input/output devices

Several devices that can be attached with GiD.

#### Does GiD support 3D graphic cards?

The 3D graphic cards status:

- In Windows systems, GiD can be accelerated by any 3D graphics card that supports OpenGL. The WinFast or the RivaTNT card are fast and works correctly. It has some minor bugs about incorrect visualizations.
- There is no 3D acceleration in Linux by now. We are working on this and there will be in the very close future.
- In Silicon Graphics all the acceleration of their cards is used by GiD.

Version 6 and newer include a feature to disconnect a graphics card that is not working properly. Check the 'GiD safe mode' option in the MS Windows start menu.

Note: To disconnect a 3D graphics card that is not working correctly in MS Windows, see the screen properties panel. In some cards, the acceleration is automatically disconnected selecting to display with 256 colors or true color.

#### Does GiD support spaceballs?

GiD supports SPACEWARE spaceballs in SGI, Linux and Windows95/98/NT/2000/ME/XP.

To use it, just install the software given by SPACEWARE. To use it on Linux see section How can I use the Spaceball on my Linux Box with GiD?.

#### How can I use the Spaceball on my Linux Box with GiD?

Being root, create this symbolic link:

    ln -s /dev/cuaX /dev/spaceball

with cuaX as the serial port where the SpaceBall is attached. And be sure that this cuaX serial port has READ/WRITE permisions for all the people ( User/Group/Others).

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