Portable_ReadFeatures (changes)
Showing changes from revision #2 to #3:
Added | Removed | Changed
Portable
» SWI Calls
» Portable_ReadFeatures
Portable_ReadFeatures
(SWI &42FC5)
| Entry | |
|---|---|
| - |
| Exit | |
|---|---|
| R1 | Available features flags word: |
| Bit 0: SWI Portable_Speed supported | |
| Bit 4: SWI Portable_Idle supported | |
| Bit 5: SWI Portable_Stop supported | |
| Bit 6: SWI Portable_SMBusOp? supported | |
| Other bits: Reserved |
Use
This call allows the user to determine what Portable features are available on the current hardware.
Notes
For an overview of which features are available on which hardware platforms and Portable implementations, see the Portable Feature Matrix.
Note that this SWI was introduced after the release of the A4 portable. Therefore if calling this SWI returns an unknown SWI error, but the Portable module is present, your code should assume that an A4 level of functionality is available (i.e. Portable_Speed is supported). See the feature matrix for more details.
See also
Social
Follow us on
and
and
ROOL Store
Buy RISC OS Open merchandise here, including SD cards for Raspberry Pi and more.