OS_UpCall 10 (changes)
Showing changes from revision #2 to #3:
Added | Removed | Changed
OS SWI Calls
» OS_UpCall
» OS_UpCall 10
OS_UpCall 10
(SWI &33)
| Entry | |
|---|---|
| R0 | 10 (&0A) |
| R1 | Device driver’s handle |
| R2 | 0 if created for reception (else created for transmission) |
| R3 | File handle for stream |
| R4 | DeviceFS stream handle, as passed to device driver on initialisation |
| Exit | |
|---|---|
| R0 | Preserved |
| R1 | Preserved |
| R2 | Preserved |
| R3 | Preserved |
| R4 | Preserved |
Use
The purpose of this call is to call inform your application that a stream has been created.
Notes
DeviceFS issues this call when a stream is created. It serves as a broadcast, and all registers should be preserved.
This call is never issued under RISC OS 2.
See also
Social
Follow us on
and
and
ROOL Store
Buy RISC OS Open merchandise here, including SD cards for Raspberry Pi and more.