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C-8 361834-002 Technical Reference Guide
Keyboard
Alt—The Alt keys (pos. 93/95) can be used in conjunction with the same keys available for use
with the
Ctrl keys with the exception that position 14 (SysRq) is available instead of position 16
(
Break). The Alt key can also be used in conjunction with the numeric keypad keys (pos. 55-57,
72-74, and 88-90) to enter the decimal value of an ASCII character code from 1-255. The
application determines the actual function of the keystrokes. Both
Alt key positions provide
identical functionality. The combination keystroke of
Alt and SysRq results in software
interrupt 15h, AX=8500h being executed. It is up to the application to use or not use this BIOS
function.
The
Ctrl and Alt keys can be used together in conjunction with keys in positions 1-13, 17-34,
39-54, 60-71, and 76-84. The
Ctrl and Alt key positions used and the sequence in which they are
pressed make no difference as long as they are held down at the time the third key is pressed. The
Ctrl, Alt, and Delete keystroke combination (required twice if in the Windows environment)
initiates a system reset (warm boot) that is handled by the BIOS.
C.2.4.3 Windows Keystrokes
Windows-enhanced keyboards include three additional key positions. Key positions 110 and 111
(marked with the Windows logo ) have the same functionality and are used by themselves or
in combination with other keys to perform specific “hot-key” type functions for the Windows
operating system. The defined functions of the Windows logo keys are listed as follows:
Keystroke Function
Window Logo Open Start menu
Window Logo + F1 Display pop-up menu for the selected object
Window Logo + TAB Activate next task bar button
Window Logo + E Explore my computer
Window Logo + F Find document
Window Logo + CTRL + F Find computer
Window Logo + M Minimize all
Shift + Window Logo + M Undo minimize all
Window Logo + R Display Run dialog box
Window Logo + PAUSE Perform system function
Window Logo + 0-9 Reserved for OEM use (see following text)
The combination keystroke of the Window Logo + 1-0 keys are reserved for OEM use for
auxiliary functions (speaker volume, monitor brightness, password, etc.).
Key position 112 (marked with an application window icon ) is used in combination with other
keys for invoking Windows application functions.