forth: Forth-ify "OVER"

forth/forth.asm

@@ -952,25 +952,10 @@ DUP:
 	push	hl
 	jp	next
 
-; ( a b -- a b a )
+.fill 132
-	.db "OVER"
-	.dw $-DUP
-	.db 4
-OVER:
-	.dw nativeWord
-	pop	hl	; B
-	pop	de	; A
-	call	chkPS
-	push	de
-	push	hl
-	push	de
-	jp	next
-
-
-.fill 112
 
 	.db	"_bend"
-	.dw	$-OVER
+	.dw	$-DUP
 	.db	5
 ; Offset: 06ee
 .out $

forth/icore.fs

@@ -98,7 +98,7 @@
     BEGIN
         ( We take advantage of the fact that char MSB is
           always zero to pre-write our null-termination )
-        OVER !                  ( a )
+        _c OVER !               ( a )
         1 _c +                  ( a+1 )
         C<                      ( a c )
         DUP _c WS?

forth/z80c.fs

@@ -31,6 +31,16 @@ CODE ROT
     BC PUSHqq,      ( A )
 ;CODE
 
+( a b -- a b a )
+CODE OVER
+    HL POPqq,       ( B )
+    DE POPqq,       ( A )
+    chkPS,
+    DE PUSHqq,      ( A )
+    HL PUSHqq,      ( B )
+    DE PUSHqq,      ( A )
+;CODE
+
 ( a b -- a b a b )
 CODE 2DUP
     HL POPqq,       ( B )