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Copyright 1991 David Jurgens |
INT 16,2 - Read Keyboard Flags
AH = 02
on return:
AL = BIOS keyboard flags (located in BIOS Data Area 40:17)
│7│6│5│4│3│2│1│0│ AL or BIOS Data Area 40:17
│ │ │ │ │ │ │ └──── right shift key depressed
│ │ │ │ │ │ └───── left shift key depressed
│ │ │ │ │ └────── CTRL key depressed
│ │ │ │ └─────── ALT key depressed
│ │ │ └──────── scroll-lock is active
│ │ └───────── num-lock is active
│ └────────── caps-lock is active
└─────────── insert is active
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| Esc or Alt-X to exit |
int 16,2 |
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