Entry
R0 = logical drive number
Exit
R0 preserved
R1 = physical drive number
Use
This call converts a logical drive number to a physical drive number. You can then use the physical drive number to produce a CDFS control block, which you have to pass when calling CDFSDriver SWIs. For details of how to construct the block, see below.
This call returns an error if the logical drive is not known.
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