SS.KySns Get Status
From NitrOS-9
Returns key down status.
| Entry Conditions | |
| A | path number |
| B | SS.KySns ($27) |
| Exit Conditions | |
| A | keyboard scan information |
Additional Information
- Accumulator A returns with a bit pattern representing eight keys. With each keyboard scan, NitrOS-9 updates this bit pattern. A bit set (1) indicates that a key was pressed since the last scan. A clear bit (0) indicates that a key was not pressed. Definitions for the bits are as follows:
| Bit | Key |
| 0 | SHIFT |
| 1 | CTRL or CLEAR |
| 2 | ALT or @ |
| 3 | Up Arrow |
| 4 | Down Arrow |
| 5 | Left Arrow |
| 6 | Right Arrow |
| 7 | Space Bar |
- The bits can be masked with the following equates:
| SHIFTBIT | equ | %00000001 |
| CNTRLBIT | equ | %00000010 |
| ALTERBIT | equ | %00000100 |
| UPBIT | equ | %00001000 |
| DOWNBIT | equ | %00010000 |
| LEFTBIT | equ | %00100000 |
| RIGHTBIT | equ | %01000000 |
| SPACEBIT | equ | %10000000 |
- The support module for this call is CC3IO.
