DeviceFS_CallDevice (changes)
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DeviceFS
» SWI Calls
» DeviceFS_CallDevice
DeviceFS_CallDevice
(SWI &42744)
| Entry | |
|---|---|
| R0 | Reason Code |
| R1 | Device driver identification using following methods: |
| Device driver’s handle | |
| Path or Pointer | |
| 0 to broadcast to all devices | |
| R2 | Parameters passed to device driver, dependant on Reason Code |
| R3 | Parameters passed to device driver, dependant on Reason Code |
| R4 | Parameters passed to device driver, dependant on Reason Code |
| R5 | Parameters passed to device driver, dependant on Reason Code |
| R6 | Parameters passed to device driver, dependant on Reason Code |
| R7 | Parameters passed to device driver, dependant on Reason Code |
| R12 | Pointer to Workspace |
| Exit | |
|---|---|
| - | Depends on device and reason code |
Use
The purpose of this call is to make a call to a device with a specified register set.
Notes
This SWI calls the device entry point specified by the reason code. The device(s) to call can be specfied by device handle, filename in the directory structure ($ may be used), or 0 to broadcast to all devices.
See also
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