Buffer_Threshold (changes)
Showing changes from revision #0 to #1:
Added | Removed | Changed
BufferManager
» SWI Calls
» Buffer_Threshold
Buffer_Threshold
(SWI &42949)
| Entry | |
|---|---|
| R0 | Buffer handle |
| R1 | Threshold |
| Exit | |
|---|---|
| R1 | Previous value |
Use
The threshold value in R1 is -1 to read, and 0 for none.
OS_UpCall 8 and OS_UpCall 9 are issued if bit 3 of the buffer_flags is set, and the buffer free space crosses the threshold.
Social
Follow us on
and
and
ROOL Store
Buy RISC OS Open merchandise here, including SD cards for Raspberry Pi and more.