=> R0 = pointer to format name
R1 = &69 (reason code)
If format name unrecognised
<= R0,R1 preserved to pass on
else
=> R0 = preserved
R1 = 0 (to claim)
R2 = SWI to call to get raw disc format info
R3 = R3 parameter for this SWI
R4 = SWI to call to lay down disc structure
R5 = R0 parameter for this SWI
This service is issued to identify how to layout a disc format. If DOSFS recognised the format name then R2 would be DOSFS_DiscFormat and R4 DOSFS_LayoutStructure.
Format specification string
The "Format specification string" is the name of the format, i.e.
L
D
E
F
or one of the DOSFS format names would be recongised between ADFS and DOSFS.
See PRM 2, page 277
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