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OS_DynamicArea 2 (Rev #4, changes)
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Programmer's OS_DynamicArea Reference Manuals
» OS_DynamicArea 2Part 15 – SWI Calls
» OS
OS_DynamicArea 2
» OS_DynamicArea
» OS_DynamicArea 2
OS_ DynamicArea 2
(SWI &66)
| Entry | |
|---|---|
| R0 | 2 (reason code) |
| R1 |
| Exit | |
|---|---|
| R0 | Preserved |
| R1 | Preserved |
| R2 | Current size of area, in bytes |
| R3 | Base logical address of area |
| R4 | Area flags |
| R5 | Maximum size of area in bytes |
| R6 | Pointer to dynamic area handler routine, or 0 if no routine |
| R7 | Pointer to workspace for handler |
| R8 | Pointer to name of area |
Use
The purpose of this call is to return information relating to a dynamic area.
Notes
For doubly-mapped areas, R3 on exit from this call returns the address of the boundary between the first and second copies of the area, whereas OS_ReadDynamicArea returns the start address of the first copy (i.e. the lowest valid address in the area).
See also
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