ScreenModes_ReadInfo 1
ScreenModes
» SWI Calls
» ScreenModes_ReadInfo
» ScreenModes_ReadInfo 1
ScreenModes_ReadInfo 1
(SWI &487C0)
| Entry | |
|---|---|
| R0 | 1 |
| Exit | |
|---|---|
| R0 | Supported DPMS State |
| All other registers preserved | |
Use
This call provides a means for software to determine which DPMS state will be used when the screen is blanked. This will either be the DPMS state that was specified in the MDF, or the DPMS state that was extracted from the EDID.
Notes
This information is of an informative nature; the preferred way for software to blank and unblank the screen is via the ScreenBlanker SWIs, which do not require the DPMS state to be specified (the kernel, which is ultimately in charge of calling GraphicsV 4, will remember the DPMS state that was specified in the VIDC control list that was used during the last mode change).
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