Entry | |
---|---|
R0 | 0 (reason code) |
R1 | Keyboard number |
R2 | &4E6F4B64 (‘NoKd’)1 |
1 Available from RISC OS 5 onwards
After a successful initialisation by the keyboard device driver, the driver notifies the kernel with this reason code.
If R2 contains the magic word ‘NoKd’, the kernel will disable its de-bouncing allowing, for example, a barcode reader to input characters faster than 10-15 cps. De-bouncing can be re-enabled by issuing this call with R2 set to 0.