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89 lines
3.6 KiB
EmacsLisp
89 lines
3.6 KiB
EmacsLisp
;;; edt-pc.el --- enhanced EDT keypad mode emulation for PC 101 keyboards -*- lexical-binding: t -*-
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;; Copyright (C) 1986, 1994-1995, 2001-2025 Free Software Foundation,
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;; Inc.
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;; Author: Kevin Gallagher <kevin.gal@verizon.net>
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;; Keywords: emulations
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;; Package: edt
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; See Info node `edt' for more details.
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;; ====================================================================
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;;;;
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;;;; KEY TRANSLATIONS
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;;;;
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;; Associate EDT keynames with Emacs terminal function vector names.
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;;
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;; To emulate the DEC LK-201 keypad keys on the PC 101 keyboard,
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;; NumLock must be ON.
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;;
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;; The PC keypad keys are mapped to the corresponding DEC LK-201
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;; keypad keys according to the corresponding physical position on
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;; the keyboard. Thus, the physical position of the PC keypad key
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;; determines its function, not the PC keycap name.
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;;
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;; There are two LK-201 keypad keys needing special handling: PF1 and
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;; the keypad comma key.
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;;
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;; PF1:
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;; Most PC software does not see a press of the NumLock key. A TSR
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;; program distributed with MS-Kermit to support its VT-100 emulation
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;; solves this problem. The TSR, called GOLD, causes a press of the
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;; keypad NumLock key to look as if the PC F1 key were pressed. So
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;; the PC F1 key is mapped here to behave as the PF1 (GOLD) key.
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;; Then with GOLD loaded, the NumLock key will behave as the GOLD key.
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;;
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;; By the way, with GOLD loaded, you can still toggle numlock on/off.
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;; GOLD binds this to Shift-NumLock.
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;;
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;; Keypad Comma:
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;; There is no physical PC keypad key to correspond to the LK-201
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;; keypad comma key. So, the EDT Emulation is configured below to
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;; ignore attempts to bind functions to the keypad comma key.
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;;
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;; Finally, F2 through F12 are also available for making key bindings
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;; in the EDT Emulation on the PC. F1 is reserved for the GOLD key,
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;; so don't attempt to bind anything to it. Also, F13, F14, HELP, DO,
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;; and F17 through F20 do not exist on the PC, so the EDT emulation is
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;; configured below to ignore attempts to bind functions to those keys.
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;;
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;;; Code:
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(defconst *EDT-keys*
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'(("KP0" . [kp-0]) ("KP1" . [kp-1]) ("KP2" . [kp-2]) ("KP3" . [kp-3])
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("KP4" . [kp-4]) ("KP5" . [kp-5]) ("KP6" . [kp-6]) ("KP7" . [kp-7])
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("KP8" . [kp-8]) ("KP9" . [kp-9]) ("KP," . "" )
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("KP-" . [kp-add]) ("KPP" . [kp-decimal]) ("KPE" . [kp-enter])
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("PF1" . [f1]) ("PF2" . [kp-divide]) ("PF3" . [kp-multiply])
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("PF4" . [kp-subtract])
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("UP" . [up]) ("DOWN" . [down]) ("RIGHT" . [right]) ("LEFT" . [left])
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("FIND" . [insert]) ("INSERT" . [home]) ("REMOVE" . [prior])
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("SELECT" . [delete]) ("PREVIOUS" . [end]) ("NEXT" . [next])
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("F1" . "" ) ("F2" . [f2]) ("F3" . [f3]) ("F4" . [f4]) ("F5" . [f5])
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("F6" . [f6]) ("F7" . [f7]) ("F8" . [f8]) ("F9" . [f9]) ("F10" . [f10])
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("F11" . [f11]) ("F12" . [f12]) ("F13" . "" ) ("F14" . "" )
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("HELP" . "" ) ("DO" . "" ) ("F17" . "" ) ("F18" . "" )
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("F19" . "" ) ("F20" . "" )))
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;;; edt-pc.el ends here
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