1: \ VARS.FS Kernal variables
2:
3: \ Copyright (C) 1995 Free Software Foundation, Inc.
4:
5: \ This file is part of Gforth.
6:
7: \ Gforth is free software; you can redistribute it and/or
8: \ modify it under the terms of the GNU General Public License
9: \ as published by the Free Software Foundation; either version 2
10: \ of the License, or (at your option) any later version.
11:
12: \ This program is distributed in the hope that it will be useful,
13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: \ GNU General Public License for more details.
16:
17: \ You should have received a copy of the GNU General Public License
18: \ along with this program; if not, write to the Free Software
19: \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20:
21: hex \ everything now hex! 11may93jaw
22:
23: \ important constants 17dec92py
24:
25: \ dpANS6 (sect 3.1.3.1) says
26: \ "a true flag ... [is] a single-cell value with all bits set"
27: \ better definition: 0 0= constant true ( no dependence on 2's compl)
28: -1 Constant true \ see starts looking for
29: \ primitives after this word!
30: 0 Constant false
31:
32: 1 cells Constant cell
33:
34: 20 Constant bl \ used by docon:, must be constant
35:
36: FF Constant /line
37:
38: 40 Constant c/l
39: 10 Constant l/s
40: 400 Constant chars/block
41:
42: \ that's enough so long
43:
44: \ User variables 13feb93py
45:
46: \ doesn't produce real user variables now, but normal variables
47:
48: Create main-task 100 cells allot
49: main-task tup H ! minimal
50:
51: Variable udp \ used by dovar:, must be variable
52:
53: AUser next-task main-task next-task !
54: AUser prev-task main-task prev-task !
55: AUser save-task 0 save-task !
56: AUser s0 \ used by douser:, must be user
57: AUser r0
58: AUser f0
59: AUser l0
60: AUser handler
61: \ AUser output
62: \ AUser input
63:
64: AUser errorhandler
65:
66: AUser "error 0 "error !
67:
68: User tibstack
69: User >tib
70: User #tib
71: User >in 0 >in !
72: User blk 0 blk !
73: User loadfile 0 loadfile !
74: \ 2User loadfilename 0 0 loadfilename 2!
75: \ here ," the terminal" align here swap count 2, Value loadfilename
76: \ align here 0 , 0 , Value loadfilename \ !! should be a `user-value'
77: User loadfilename# 0 loadfilename# !
78:
79: User loadline \ number of the currently interpreted
80: \ (in TIB) line if the interpretation
81: \ is in a textfile
82: \ the first line is 1
83:
84: 2User linestart \ starting file postition of
85: \ the current interpreted line (in TIB)
86:
87: User base A base !
88: User dpl -1 dpl !
89:
90: User state 0 state !
91: AUser normal-dp \ the usual dictionary pointer
92: AUser dpp normal-dp dpp !
93: \ the pointer to the current dictionary pointer
94: \ ist reset to normal-dp on (doerror)
95: \ (i.e. any throw caught by quit)
96: AUser LastCFA
97: AUser Last
98:
99: User locals-size \ this is the current size of the locals stack
100: \ frame of the current word
101:
102:
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