version 1.3, 1996/05/13 16:37:03
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version 1.5, 1997/07/06 14:42:14
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\ Multitasker 19aug94py |
\ Multitasker 19aug94py |
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\ Copyright (C) 1995-1997 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
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\ Gforth is free software; you can redistribute it and/or |
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\ modify it under the terms of the GNU General Public License |
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\ as published by the Free Software Foundation; either version 2 |
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\ of the License, or (at your option) any later version. |
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\ This program 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 this program; if not, write to the Free Software |
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\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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Create sleepers sleepers A, sleepers A, 0 , |
Create sleepers sleepers A, sleepers A, 0 , |
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\ LINK-TASK links task1 into the task chain of task2 |
\ LINK-TASK links task1 into the task chain of task2 |
Line 32 interpretation:
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Line 50 interpretation:
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: NewTask ( n -- Task ) dup 2* 2* udp @ + dup |
: NewTask ( n -- Task ) dup 2* 2* udp @ + dup |
allocate throw + >r |
allocate throw + >r |
r@ over - udp @ - next-task over udp @ move |
r@ over - udp @ - next-task over udp @ move |
r> over user' r0 + ! dup >r |
r> over user' rp0 + ! dup >r |
dup r@ user' l0 + ! over - |
dup r@ user' lp0 + ! over - |
dup r@ user' f0 + ! over - |
dup r@ user' fp0 + ! over - |
dup r@ user' s0 + ! over - |
dup r@ user' sp0 + ! over - |
dup r@ user' normal-dp + dup >r ! |
dup r@ user' normal-dp + dup >r ! |
r> r@ user' dpp + ! + $10 + |
r> r@ user' dpp + ! + $10 + |
r@ user' >tib + ! |
r@ user' >tib + ! |
Line 47 interpretation:
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Line 65 interpretation:
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: (pass) ( x1 .. xn n task -- ) rdrop |
: (pass) ( x1 .. xn n task -- ) rdrop |
[ ' kill-task >body ] ALiteral r> |
[ ' kill-task >body ] ALiteral r> |
rot >r r@ user' r0 + @ 2 cells - dup >r 2! |
rot >r r@ user' rp0 + @ 2 cells - dup >r 2! |
r> swap 1+ |
r> swap 1+ |
r@ user' f0 + @ swap 1+ |
r@ user' fp0 + @ swap 1+ |
r@ user' l0 + @ swap 1+ |
r@ user' lp0 + @ swap 1+ |
cells r@ user' s0 + @ tuck swap - dup r@ user' save-task + ! |
cells r@ user' sp0 + @ tuck swap - dup r@ user' save-task + ! |
?DO I ! cell +LOOP r> wake ; |
?DO I ! cell +LOOP r> wake ; |
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: activate ( task -- ) 0 swap (pass) ; |
: activate ( task -- ) 0 swap (pass) ; |