--- gforth/arch/misc/asm.fs	1998/05/02 21:28:57	1.3
+++ gforth/arch/misc/asm.fs	2007/12/31 19:02:24	1.9
@@ -1,7 +1,27 @@
 \ PIE MISC assembler
 
+\ Copyright (C) 1998,2000,2003,2004,2007 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 3
+\ 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, see http://www.gnu.org/licenses/.
+
 Vocabulary assembler
 also assembler also definitions forth
+\ [IFUNDEF] cross
+\ : X ;
+\ [THEN]
 
 \ sources
 
@@ -22,14 +42,16 @@ $7 Constant *ACCU
 $C Constant XOR		$D Constant OR
 $E Constant AND		$F Constant SHR
 
-$FFFC Constant tx
+$FFFC Constant txd
+$FFFF Constant rx?
+$FFFE Constant rxd
 \ $FFF0 Constant tx
 
 : end-label previous ;
 
 Create marks $10 cells allot
 
-: ahere s" here" evaluate 2/ ;
+: ahere X here 2/ ;
 
 : m ( n -- ) cells marks + ahere 2* swap ! 0 ;
 : r ( n -- ) cells marks + @ ahere swap s" !" evaluate 0 ;
@@ -51,11 +73,18 @@ Create marks $10 cells allot
          r> $10 /string 0 max rot $10 + -rot
   REPEAT  drop 2drop ;
 
-: sym base @ >r hex
-    cr ." sym:s/PC=" ahere 4 0.r ." /" bl word count type ." /g" cr
-    r> base ! ;
+\ : sym 
+\    base @ >r hex
+\    cr ." sym:s/PC=" ahere 4 0.r ." /" bl word count type ." /g" cr
+\    r> base ! ;
+: sym bl word drop ;
+
+: label 
+  >in @ bl word count X here symentry >in !
+  ahere Constant ;
 
-: label ahere Constant ;
+: code
+  -1 ABORT" Need end-code or end-label before a new code definition" ;
 
 also forth definitions
 
@@ -65,3 +94,4 @@ also forth definitions
 : (end-code) previous ;
 
 previous previous previous
+