Entry | |
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R0 | Area to read, bit 7 set to read maximum size to R2 |
Exit | |
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R0 | Pointer to start address of area |
R1 | Current number of bytes in area |
R2 | Maximum size of area |
The purpose of this call is to read the size of an area.
If this SWI is used on an area that has virtual memory active this SWI reads the logical size of the area, otherwise the behaviour is the same as before. In practice this means that this call can be used by the application without worrying whether virtual memory is active.