OS_Module 24 (changes)
Showing changes from revision #0 to #1:
Added | Removed | Changed
OS SWI Calls
» OS_Module
» OS_Module 24
OS_ Module 24
(SWI &1E)
| Entry | |
|---|---|
| R0 | 24 |
| R3 | Size of area |
| R4 | Alignment (power of two) |
| Exit | |
|---|---|
| R2 | Block |
| - | Other registers preserved |
Use
The purpose of this call is to return an aligned area of free RMA claimed for use.
Notes
The block address returned in R2 will satisfy (R2 MOD R4)=0. This is in contrast to OS_Module 6, which always returns an address (R2 MOD 16)=4.
If an aligned block is resized via OS_Module 13 then it is not guaranteed to remain aligned.
This call was introduced in RISC OS 5.27.
See also
Social
Follow us on
and
and
ROOL Store
Buy RISC OS Open merchandise here, including SD cards for Raspberry Pi and more.