OS_ScreenMode 65
OS SWI Calls
» OS_ScreenMode
» OS_ScreenMode 65
OS_ScreenMode 65
(SWI &65)
| Entry | |
|---|---|
| R0 | 65 |
| R1 | GraphicsV Device driver number |
| Exit | |
|---|---|
| All registers preserved | |
Use
GraphicsV Device drivers should make this call once they have completed their initialisation and are ready for use by the OS. Once this call has been made the driver should expect to receive requests on the GraphicsV vector.
Notes
Prior to making this call, OS_ScreenMode 64 should be used to request a driver ID from the system, and the driver must install itself on the GraphicsV vector.
When the driver is ready to shut down, it must call OS_ScreenMode 66, remove itself from GraphicsV, and then call OS_ScreenMode 67 to release the driver ID.
Service_DisplayStatus will be issued by this call in order to notify the rest of the system that the new driver is ready for use. The kernel may also attempt to start using the driver if there is currently no other driver active.
See also
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