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GraphicsV 2

GraphicsV
» GraphicsV 2

Graphics Vector (42)

Entry  
R0 VIDC List Type 3
R4 Bits 0-23: 2 (reason code)
Bits 24-31: Driver number
Exit  
R4 0
- All other registers preserved

Use

The kernel issues this call in order to instruct the display driver to change the display mode. The appropriate driver should respond by changing to the requested mode and setting R4 to 0 to claim the call.

Notes

Prior to changing the mode, the OS will always call GraphicsV 7 to check that the driver supports the mode. Drivers must implement the vet mode call to allow them to object to unsupported modes, as there is currently no way for a driver to refuse a mode change when GraphicsV 2 is called.

See also

  • GraphicsV
Revised on January 10, 2014 13:35:32 by Jeffrey Lee (213) (195.72.173.131)
Edit | Back in time (6 revisions) | See changes | History | Views: Print | Source | Linked from: HAL Video API, GraphicsV 3, GraphicsV, GraphicsV 18

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