KeyV (changes)
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Programmer's Reference Manuals
» Vectors
» Software Vector Numbers
» KeyV
Key Vector (19)
| Entry | |
|---|---|
| R0 | Reason Code |
Use
This vector has multiple uses, depending on the reason code in R0.
Reason Codes
| # | |
|---|---|
| 0 | Keyboard present |
| 1 | Key released |
| 2 | Key pressed |
| 3 | Notify driver of LED state |
| 4 | Enable keyboard device drivers |
| 5-11 | Reserved for system use |
| 14 | Key names 1 |
| 15 | RISCOS Ltd alternative to KeyV 1 and 2 based on HID usage (Select only) 2 |
| 16 | Keyboard removed |
Controlling sources: Hdr:Keyboard managed by the allocations manager
1 Cerilica
2 Not implemented on RISC OS 5.
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