OS_Memory 13 (changes)
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OS SWI Calls
» OS_Memory
» OS_Memory 13
OS_ Memory 13
(SWI &68)
| Entry | |
|---|---|
| R0 | 13 (&0D), and flags |
| R1 | Physical address to map in |
| R2 | Size to map in |
| Exit | |
|---|---|
| R0 | Preserved |
| R1 | Preserved |
| R2 | Preserved |
| R3 | Logical address assigned |
Use
The purpose of this call is to permanently map in a region of IO memory at run-time.
For access to 64-bit physical addresses, see OS_Memory 21.
See also
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