DeviceDriver_Entry 13
DeviceFS
» DeviceDriver_Entry
» DeviceDriver_Entry 13
DeviceDriver_Entry 13
(SWI -)
| Entry | |
|---|---|
| R0 | 13 (Monitor RX) |
| 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
Social
Follow us on
and
and
ROOL Store
Buy RISC OS Open merchandise here, including SD cards for Raspberry Pi and more.