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APPENDIX D: The LK461 Keyboard
Appendix D: The LK461 Keyboard
Some of the computers manufactured by Compaq
®
subsidiary Digital Equipment
Corporation come with a special keyboard called the DEC LK461. The Matrix
ServSwitch supports this keyboard by passing through unaltered the scan codes of
certain proprietary keys (such as [Help] and [Do]) and remapping others (such as
[PF1] through [PF4]). The Switch maps the special keys of the LK461 as shown in
the table below. Note that the LK461 has no Num Lock LED and its Hold Screen
LED is equivalent to the Scroll Lock LED on other keyboards.
Key Pressed on Scan Code
LK461 Keyboard Sent to U.S. CPU
[Find] [Home]
[Insert Here] [Insert]
[Remove] [Delete]
[Select] [End]
[Prev] [Page Up]
[Next] [Page Down]
[F13] Same (passed through unaltered)
[F14] Same (passed through unaltered)
[F15] / [Help] Same (passed through unaltered)
[F16] / [Do] Same (passed through unaltered)
[F17] Same (passed through unaltered)
[F18] [Print Screen]
[F19] [Scroll Lock]
[F20] [Pause]
[PF1] [Num Lock]
[PF2] Keypad [/] (slash or divide key)
[PF3] Keypad [*] (asterisk or multiply key)
[PF4] Keypad [–] (minus key)
Keypad [–] (minus key) Keypad [+] (plus key)*
Keypad [,] (comma key) Keypad [+] (plus key)
Left [Compose] Same (passed through unaltered)
Right [Compose] Right [Control]
[<] / [>] (grtr. than/less than key) [`] / [~] (accent grave/tilde key)**
*Keypad [–] is always mapped this way in Mode 2; in Mode 3, the mapping varies by country.
**This mapping varies by country; that is, the key is mapped differently depending on what
keyboard country or language the CPU is configured to accept.
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