OS_Args 0 (changes)
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Programmer's OS Reference SWI Manuals Calls
» Part OS_Args 15 – SWI Calls
» OS_Args 0OS
» OS_Args
» OS_Args 0
OS_Args 0
(SWI &09)
| Entry | |
|---|---|
| R0 | 0 (reason code) |
| R1 | File handle, or 0 |
| Exit | |
|---|---|
| R0 | Temporary Filing System Numbers 1 (if R1=0 on entry) |
| R1 | Preserved |
| R2 | File pointer (if R1 <> 0 on entry) |
Use
The purpose of this call is to return the temporary filing system number (R1 = 0), or file pointer (R1 <> 0).
Notes
1 FileSwitch versions between 1.70 (RISC OS 3.00) and 2.75 will return 0×40000000 if no temporary filing system is active. For backwards compatibility, treat values 0 and 0×40000000 as meaning ‘none’.
See also
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