Buffer_InternalInfo
BufferManager
» SWI Calls
» Buffer_InternalInfo
Buffer_InternalInfo
(SWI &42949)
| Entry | |
|---|---|
| R0 | Buffer handle |
| Exit | |
|---|---|
| R0 | Internal buffer ID |
| R1 | Address of service code |
| R2 | Value to pass to service code in R12 |
Use
This call converts a buffer handle into an internal buffer ID, and returns the address of a service routine that can be used to access the buffer quickly. The address of the routine and the R12 value are the same for all buffers.
Notes
If an invalid buffer handle is passed, an error is returned but R1 and R2 will be correct.
This call is available on RISC OS 3.5 or greater.
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