\ VARS.FS Kernal variables \ Copyright (C) 1995 Free Software Foundation, Inc. \ This file is part of Gforth. \ Gforth 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 2 \ of the License, or (at your option) any later version. \ This program 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 this program; if not, write to the Free Software \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. hex \ everything now hex! 11may93jaw \ important constants 17dec92py \ dpANS6 (sect 3.1.3.1) says \ "a true flag ... [is] a single-cell value with all bits set" \ better definition: 0 0= constant true ( no dependence on 2's compl) -1 Constant true \ see starts looking for \ primitives after this word! 0 Constant false 1 cells Constant cell 20 Constant bl \ used by docon:, must be constant FF Constant /line 40 Constant c/l 10 Constant l/s 400 Constant chars/block \ that's enough so long \ User variables 13feb93py \ doesn't produce real user variables now, but normal variables Create main-task 100 cells allot main-task tup H ! minimal Variable udp \ used by dovar:, must be variable AUser next-task main-task next-task ! AUser prev-task main-task prev-task ! AUser save-task 0 save-task ! AUser s0 \ used by douser:, must be user AUser r0 AUser f0 AUser l0 AUser handler \ AUser output \ AUser input AUser errorhandler AUser "error 0 "error ! User >tib User #tib User >in 0 >in ! User blk 0 blk ! User loadfile 0 loadfile ! \ 2User loadfilename 0 0 loadfilename 2! \ here ," the terminal" align here swap count 2, Value loadfilename \ align here 0 , 0 , Value loadfilename \ !! should be a `user-value' User loadfilename# 0 loadfilename# ! User loadline \ number of the currently interpreted \ (in TIB) line if the interpretation \ is in a textfile \ the first line is 1 2User linestart \ starting file postition of \ the current interpreted line (in TIB) User base A base ! User dpl -1 dpl ! User state 0 state ! AUser normal-dp \ the usual dictionary pointer AUser dpp normal-dp dpp ! \ the pointer to the current dictionary pointer \ ist reset to normal-dp on (doerror) \ (i.e. any throw caught by quit) AUser LastCFA AUser Last User locals-size \ this is the current size of the locals stack \ frame of the current word