DeviceDriver_Entry 12 (changes)
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DeviceFS
» DeviceDriver_Entry
» DeviceDriver_Entry 12
DeviceDriver_Entry 12
(SWI -)
| Entry | |
|---|---|
| R0 | 12 (Monitor TX) |
| R2 | Device driver stream handle |
| Exit | |
|---|---|
| VC, or VS and R0 | Pointer to error block |
Use
This entry point is called periodically by DeviceFS if a process has been blocking on your stream for some time, allowing devices to abort a blocking operation if there is an error with the device.
Notes
The calls must be enabled by setting bit 2 of the flags word to DeviceFS_Register.
See also
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