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HAL_Video_Features
Hardware Abstraction Layer
HAL entry points from RISC OS
ยป HAL_Video_Features
HAL_Video_Features
(HAL entry #50)
int HAL_Video_Features(void)
| Entry | |
|---|---|
| - |
| Exit | |
|---|---|
| Bit 0 | Hardware scroll is supported |
| Bit 1 | Hardware pointer/cursor is supported |
| Bit 2 | Interlace is supported with progressive framestore |
| Other bits reserved (returned as 0) |
Use
This is an internal call for OS use only and should not be used by user software. User software should use GraphicsV instead of interacting with the HAL directly.
Bits are set for true. If bit 2 is true, then the OS assumes that a simple progressive framestore layout is sufficient for an interlaced display (ie. that the hardware implements the interlaced scan).