OS_ReadSysInfo 13 (changes)
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Programmer's OS Reference SWI Manuals Calls
» Part OS_ReadSysInfo 15 – SWI Calls
» OS_ReadSysInfo 13OS
» OS_ReadSysInfo
» OS_ReadSysInfo 13
OS_ReadSysInfo 13
(SWI &58)
| Entry | |
|---|---|
| R0 | 13 |
| R1 | Pointer to key handler, or 0 to just return valid flags |
| Exit | |
|---|---|
| R0 | Mask of valid key handler flags |
Use
The purpose of this call is to allow the owner of a key handler to validate it before installing it via OS_InstallKeyHandler, or to read which key handler flags this OS version supports.
Notes
If a key handler has been supplied and is invalid, error &1F4 (“Bad key handler”) will be returned.
If no key handler has been supplied and the SWI generates an error (e.g. &1EC, “Unknown OS_ReadSysInfo call”), then take it as an indication that the kernel doesn’t support the new key handler format at all.
See also
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