Bit Meaning
0 FS supports FSEntry_Func 34
1 FS should be called to do *Cat
2 FS should be called to do *Ex
3 FS supports FSEntry_Args 11
4 FS wishes to be excluded from special case handling (Select)
5-31 Reserved, must be zero
FileSwitch client special case table
FileSwitch contains a table of filing system numbers which are special cased because they are known to fail to implement the extensions added in RISC OS 3 where FileSwitch took control of canonicalising paths and similar tasks. Prior to that, in RISC OS 2, each filing system had to retain directory state and contain path resolution code.
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