Showing changes from revision #1 to #2:
Added | Removed | Changed
Entry | |
---|---|
R4 | Bits 0-23: 1 (reason code) |
Bits 24-31: Display number |
Exit | |
---|---|
R0-R3 | Corrupt |
R4 | 0 |
- | All other registers preserved |
The display driver should call this vector when a VSync interrupt occurs.
If a display driver receives this vector then it should ignore it and pass it on unmodified.
When the kernel receives this vector, it will update claim it (by setting R4 to 0) and perform its usual VSync processing – updating the pointer position by issuingGraphicsV 5 . , releasing any foreground task waiting onOS_Byte 19, etc.