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OS_ValidateAddress
Programmer's Reference Manuals
» Part 15 – SWI Calls
» OS
» OS_ValidateAddress
OS_ValidateAddress
(SWI &3A)
| Entry | |
|---|---|
| R0 | Minimum address |
| R1 | Maximum address |
| Exit | |
|---|---|
| R0 | Preserved |
| R1 | Preserved |
| C flag is clear if the range is OK, else set | |
Use
The purpose of this call is to check that a range of addresses are in logical RAM.
Notes
SWI checks the address range between R0 and R1-1 to see if the specified range lies in logical RAM and has a mapping into physical RAM.
This call does not check that the memory actually exists, only that it ought to exist. If you have used OS_SetMemMapEntries, then this call will not work as expected.