OS_Byte 122 (changes)
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Programmer's OS Reference SWI Manuals Calls
» Part OS_Byte 15 – SWI Calls
» OS_Byte 122OS
» OS_Byte
» OS_Byte 122
OS_Byte 122
(SWI &06)
| Entry | |
|---|---|
| R0 | 122 (&7A) |
| Exit | |
|---|---|
| R0 | Preserved |
| R1 | Key, or &FF if none pressed |
| R2 | Corrupted |
Use
The purpose of this call is to check which keys are being pressed (ignoring the Shift, Ctrl, Alt and mouse keys).
Notes
This call is equivalent to OS_Byte 121 with R1=16. It scans the keyboard ignoring Shift, Control, Alt and mouse buttons. Any key that has a value below 16 is ignored.
See also
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