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;;; edt-pc.el --- enhanced EDT keypad mode emulation for PC 101 keyboards
;; Copyright (C) 1986, 1994-1995, 2001-2012 Free Software Foundation, Inc.
;; Author: Kevin Gallagher <Kevin.Gallagher@boeing.com>
;; Maintainer: Kevin Gallagher <Kevin.Gallagher@boeing.com>
;; Keywords: emulations
;; Package: edt
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; See Info node `edt' for more details.
;; ====================================================================
;;;;
;;;; KEY TRANSLATIONS
;;;;
;; Associate EDT keynames with Emacs terminal function vector names.
;;
;; To emulate the DEC LK-201 keypad keys on the PC 101 keyboard,
;; NumLock must be ON.
;;
;; The PC keypad keys are mapped to the corresponding DEC LK-201
;; keypad keys according to the corresponding physical position on
;; the keyboard. Thus, the physical position of the PC keypad key
;; determines its function, not the PC keycap name.
;;
;; There are two LK-201 keypad keys needing special handling: PF1 and
;; the keypad comma key.
;;
;; PF1:
;; Most PC software does not see a press of the NumLock key. A TSR
;; program distributed with MS-Kermit to support its VT-100 emulation
;; solves this problem. The TSR, called GOLD, causes a press of the
;; keypad NumLock key to look as if the PC F1 key were pressed. So
;; the PC F1 key is mapped here to behave as the PF1 (GOLD) key.
;; Then with GOLD loaded, the NumLock key will behave as the GOLD key.
;;
;; By the way, with GOLD loaded, you can still toggle numlock on/off.
;; GOLD binds this to Shift-NumLock.
;;
;; Keypad Comma:
;; There is no physical PC keypad key to correspond to the LK-201
;; keypad comma key. So, the EDT Emulation is configured below to
;; ignore attempts to bind functions to the keypad comma key.
;;
;; Finally, F2 through F12 are also available for making key bindings
;; in the EDT Emulation on the PC. F1 is reserved for the GOLD key,
;; so don't attempt to bind anything to it. Also, F13, F14, HELP, DO,
;; and F17 through F20 do not exist on the PC, so the EDT emulation is
;; configured below to ignore attempts to bind functions to those keys.
;;
;;; Code:
(defconst *EDT-keys*
'(("KP0" . [kp-0]) ("KP1" . [kp-1]) ("KP2" . [kp-2]) ("KP3" . [kp-3])
("KP4" . [kp-4]) ("KP5" . [kp-5]) ("KP6" . [kp-6]) ("KP7" . [kp-7])
("KP8" . [kp-8]) ("KP9" . [kp-9]) ("KP," . "" )
("KP-" . [kp-add]) ("KPP" . [kp-decimal]) ("KPE" . [kp-enter])
("PF1" . [f1]) ("PF2" . [kp-divide]) ("PF3" . [kp-multiply])
("PF4" . [kp-subtract])
("UP" . [up]) ("DOWN" . [down]) ("RIGHT" . [right]) ("LEFT" . [left])
("FIND" . [insert]) ("INSERT" . [home]) ("REMOVE" . [prior])
("SELECT" . [delete]) ("PREVIOUS" . [end]) ("NEXT" . [next])
("F1" . "" ) ("F2" . [f2]) ("F3" . [f3]) ("F4" . [f4]) ("F5" . [f5])
("F6" . [f6]) ("F7" . [f7]) ("F8" . [f8]) ("F9" . [f9]) ("F10" . [f10])
("F11" . [f11]) ("F12" . [f12]) ("F13" . "" ) ("F14" . "" )
("HELP" . "" ) ("DO" . "" ) ("F17" . "" ) ("F18" . "" )
("F19" . "" ) ("F20" . "" )))
;;; edt-pc.el ends here
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