OS_UpCall 15 (changes)
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OS SWI Calls
» OS_UpCall
» OS_UpCall 15
OS_UpCall 15
(SWI &33)
| Entry | |
|---|---|
| R0 | 15 (&0F) |
| R1 | FileSwitch stream handle |
| Exit | |
|---|---|
| R0 | Preserved |
| R1 | Preserved |
Use
The purpose of this call is to call inform your application when there is data entering a previously empty buffer.
Notes
This service is issued when there is data entering a previously empty buffer. Only devices opened for read will receive this UpCall.
See also
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