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0040h:0018h Keyboard Extended Shift Status
| Keyboard
Extended Shift Status |
| Bit |
Dec |
Hex |
Description |
| 0 |
1 |
01h |
Right CTRL pressed |
| 1 |
2 |
02h |
Left ALT pressed |
| 2 |
4 |
04h |
SYSREQ pressed |
| 3 |
8 |
08h |
PAUSE locked |
| 4 |
16 |
10h |
SCROLL pressed |
| 5 |
32 |
20h |
NUM pressed |
| 6 |
64 |
40h |
CAPS pressed |
| 7 |
128 |
80h |
INS pressed |
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