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This SWI controls the filing system manager and the filing systems themselves. Action taken depends on R0 :

00 &00  Set current dir
01 &01  Set library dir
02 &02  Inform of start of new app
03 &03  Run type (same as run a file)
04 &04  Run a file
05 &05  Catalogue a dir
06 &06  Examine current dir
07 &07  Catalogue library
08 &08  Examine library
09 &09  Examine objects
10 &0A  Set FS options
11 &0B  Set temporary FS
12 &0C  Add a FS
13 &0D  Check for FS
14 &0E  Select FS
15 &0F  Boot from FS
16 &10  Remove FS
17 &11  Add secondary module
18 &12  Convert filetype number to name
19 &13  Restore current FS
20 &14  Read location of temp FS
21 &15  Return a file handle
22 &16  Close all open files
23 &17  Shutdown FS
24 &18  Set attributes of objects
25 &19  Rename object
26 &1A  Copy objects
27 &1B  Wipe objects
28 &1C  Count objects
29 &1D  Reserved (was 'Create Handle')
30 &1E  Read location of temporary FS secondary module
31 &1F  Convert filetype name to number
32 &20  Output list of object names & info
33 &21  Convert a filing system number to a name
34 &22  Reserved (was 'Set Contexts')
35 &23  Add an image FS
36 &24  Remove an image FS
37 &25  Canonicalise path
38 &26  Extract filetype from file information
39 &27  Set User Root Directory
40 &28  Swap current and previous directories
41 &29  Return defect list for an image file
42 &2A  Map out defect from an image file
43 &2B  Unset the Current Directory
44 &2C  Unset the User Root Directory
45 &2D  Unset the Library Directory
46 &2E  Return used space map of image file
47 &2F  Read boot option for disc or image file
48 &30  Write boot option for disc or image file
49 &31  Read free space for disc or image file
50 &32  Rename disc or image file
51 &33  Request update of image stamp
52 &34  Find object at offset within image file
53 &35  Set given directory to path unchecked
54 &36  Read path of given directory
55 &37  Read free space for a large disc or image file
56 &38  Read defect list for a large disc or image file
57 &39  Map out defect from large disc or image
58 &3A  Enumerate handles
59 &3B  FileSwitch info
60 &3C  Run absolute file
61 &3D  Run untyped file
62 &3E  Run transient utility

See also: PRM 2-77, 5a-166, 5a-663

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