DeviceFS_Register (changes)
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DeviceFS
» SWI Calls
» DeviceFS_Register
DeviceFS_Register
(SWI &42740)
| Entry | |
|---|---|
| R0 | Device flags |
| R1 | Pointer to list of devices to install |
| R2 | Pointer to device driver entry point |
| R3 | Private word (passed to entry point in R8) |
| R4 | Workspace pointer (passed to entry point in R12) |
| R5 | Pointer to special field validation string? |
| R6 | Maximium RX devices (0 for none, -1 for unlimited) |
| R7 | Maximium TX devices (0 for none, -1 for unlimited) |
| Exit | |
|---|---|
| R0 | Device driver’s handle |
Global Device Flags
| Bit | Meaning when set |
|---|---|
| 0 | Is block device (otherwise is character device) |
| 1 | Device is Full duplex |
| 2 | Monitor TX/RX available |
| 3 | Monitor EOF on reading |
| 4 | Issue device OS_UpCall with reason code 15 – 17 |
| 5 – 31 | Reserved (must be zero) |
Use
The purpose of this call is to register a device driver and its associated devices with DeviceFS.
Notes
If a device in the list should fail to register than all devices specified will be removed.
See also
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