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OS_Hardware 2
Hardware Abstraction Layer
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OS_Hardware 2
(SWI &7A)
| Entry | |
|---|---|
| R0 | Pointer to device descriptor |
| R8 | 2 |
| Exit | |
|---|---|
| - | All registers preserved |
Use
Declare a new device to the system. If a device with that address is already registered, an attempt will be made to first remove it.
Notes
To remove a device, call OS_Hardware 3.
Instead of calling SWIs, HAL code should use RISCOS_AddDevice to register devices.
Once the device has been added to the system, Service_Hardware 0 will be issued to notify other programs.
See also
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