OS_PlatformFeatures (Rev #5)
Programmer's Reference Manuals
» Part 15 – SWI Calls?
» OS
» OS_PlatformFeatures
OS_PlatformFeatures
(SWI &6D)
| Entry | |
|---|---|
| R0 | Reason code, + Flags which are reason code specific |
| All other registers are dependent on reason code | |
| Exit | |
|---|---|
| All other registers dependent on reason code | |
Use
The purpose of this call is to return information relating to the hardware platform currently running the Operating System.
Notes
The action performed depends on the reason code value in R0.
Reason Codes
| # | Hex # | Action |
|---|---|---|
| 0 | &00 | Read code features |
| 1 | &01 | Read MMU features (RISC OS Select) |
| 32 | &20 | Read processor vectors location |
| 33 | &21 | Read cache information |
| 34 | &22 | Read CPU features |
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