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!+
! This file, KEYPADDEF.REQ, defines symbols and structures for the keypad,
! and for definable keys in general.
!
!
!  COPYRIGHT (c) DIGITAL EQUIPMENT CORPORATIO 1984, 1988 ALL RIGHTS RESERVED.
!
!  THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY BE USED AND  COPIED
!  ONLY  IN  ACCORDANCE  WITH  THE  TERMS  OF  SUCH  LICENSE AND WITH THE
!  INCLUSION OF THE ABOVE COPYRIGHT NOTICE.  THIS SOFTWARE OR  ANY  OTHER
!  COPIES  THEREOF MAY NOT BE PROVIDED OR OTHERWISE MADE AVAILABLE TO ANY
!  OTHER PERSON.  NO TITLE TO AND OWNERSHIP OF  THE  SOFTWARE  IS  HEREBY
!  TRANSFERRED.
!
!  THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE  WITHOUT  NOTICE
!  AND  SHOULD  NOT  BE  CONSTRUED  AS  A COMMITMENT BY DIGITAL EQUIPMENT
!  CORPORATION.
!
!  DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR  RELIABILITY  OF  ITS
!  SOFTWARE ON EQUIPMENT WHICH IS NOT SUPPLIED BY DIGITAL.
!
!
! Revision history:
!
! 1-001	- Original.  JBS 13-Aug-1982
! 1-002	- Provide a large hash table on VAX/VMS.  JBS 17-Aug-1982
! 3-001 - Modify for Tops10/20.  GB 17-May-1983
!<BLF/PAGE>

!+
! Define symbols for the values that correspond to the keys.
! Values 0 to 127 are ASCII characters, 128 to 255 are the
! DEC Multinational Supplementry set.
!-

LITERAL
    K_KPAD_BASE = 300,				! Base for the 22 keypad keys
    K_FUN_BASE = 400,				! Base for the 100 function keys
    K_MAX_FUN_VAL = 99,				! Maximum function key value
    K_GOLD_BASE = 500,				! Add for GOLD prefix
    K_KEY_MAX = 999;				! Maximun key value

!+
! Define the special keypad keys.
!
! These are the numeric values used for the definable keys.
!-

LITERAL
    K_0 = 	K_KPAD_BASE + 0,
    K_1 = 	K_KPAD_BASE + 1,
    K_2 = 	K_KPAD_BASE + 2,
    K_3 = 	K_KPAD_BASE + 3,
    K_4 = 	K_KPAD_BASE + 4,
    K_5 = 	K_KPAD_BASE + 5,
    K_6 = 	K_KPAD_BASE + 6,
    K_7 = 	K_KPAD_BASE + 7,
    K_8 = 	K_KPAD_BASE + 8,
    K_9 = 	K_KPAD_BASE + 9,
    K_PF2 = 	K_KPAD_BASE + 10,
    K_PF3 = 	K_KPAD_BASE + 11,
    K_UP = 	K_KPAD_BASE + 12,
    K_DOWN = 	K_KPAD_BASE + 13,
    K_RIGHT = 	K_KPAD_BASE + 14,
    K_LEFT = 	K_KPAD_BASE + 15,
    K_DOT = 	K_KPAD_BASE + 16,
    K_PF4 = 	K_KPAD_BASE + 17,
    K_MINUS = 	K_KPAD_BASE + 18,
    K_COMMA = 	K_KPAD_BASE + 19,
    K_PF1 = 	K_KPAD_BASE + 20,
    K_ENTER = 	K_KPAD_BASE + 21;

!+
! The following structure holds a defined key.
!-

FIELD
    KEY_DEF_FIELD =
	SET
	KEY_DEF_NEXT = [0, 0, 36, 0],	! Pointer to next in this bucket, must be first
	KEY_DEF_KEY = [1, 0, 18, 0],	! code for this key, 0 to K_KEY_MAX
	KEY_DEF_LEN = [1, 18, 18, 0],	! Length of the definition
	KEY_DEF_TEXT = [2, 0, 0, 0]	! Start of definition text
	TES;
 
LITERAL
    KEY_DEF_OVERHEAD = %FIELDEXPAND (KEY_DEF_TEXT, 0);	! Amount to add to text size to get structure size

!+
! Define the length of the hash table that holds pointers to key definitions.
!-

LITERAL K_KPAD_HASHSIZ = 199;		! Plenty of room

!	[ End of file KEYPADDEF.REQ ]