\ VARS.FS Kernal variables \ Copyright (C) 1995,1996,1997,1998 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 ( -- u ) \ gforth 1 floats Constant float ( -- u ) \ gforth 20 Constant bl \ used by docon:, must be constant FF Constant /line 40 Constant c/l 10 Constant l/s 400 Constant chars/block $20 8 2* cells + 2 + cell+ constant word-pno-size ( -- u ) 84 constant pad-minsize ( -- u ) \ that's enough so long \ User variables 13feb93py \ initialized by COLD Create main-task has? OS [IF] 100 [ELSE] 40 [THEN] cells allot \ set user-pointer from cross-compiler right main-task UNLOCK tup ! LOCK Variable udp \ user area size? -anton AUser next-task main-task next-task ! AUser prev-task main-task prev-task ! AUser save-task 0 save-task ! AUser sp0 \ used by douser:, must be user ' sp0 Alias s0 AUser rp0 ' rp0 Alias r0 AUser fp0 \ no f0, because this leads to unexpected results AUser lp0 ' lp0 Alias l0 AUser handler \ pointer to last throw frame AUser backtrace-empty \ true if the next THROW should store a backtrace \ AUser output \ AUser input AUser errorhandler AUser "error 0 "error ! [IFUNDEF] #tib \ in ec-Version we may define this ourself User tibstack \ saves >tib in execute User >tib \ pointer to terminal input buffer User #tib \ chars in terminal input buffer User >in 0 >in ! \ char number currently processed in tib [THEN] has? file [IF] User blk 0 blk ! User loadfile 0 loadfile ! 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) [THEN] 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 has? glocals [IF] User locals-size \ this is the current size of the locals stack \ frame of the current word [THEN]