diff --git a/mach/m68020/ncg/README b/mach/m68020/ncg/README
index 327b53abd..1849c66e5 100644
--- a/mach/m68020/ncg/README
+++ b/mach/m68020/ncg/README
@@ -1,10 +1,11 @@
 The file 'table' in this directory contains a back end table for the
-MC68020 processor as well as one for the MC68000. Both tables use 4 bytes
-for words as well as for pointers. The table must be preprocessed first
+MC68020 processor as well as one for the MC68000. Both tables use 2 or 4 bytes
+for words and 4 bytes for pointers. The table must be preprocessed first
 by the C preprocessor.
 The file "whichone.h" specifies which code generator is generated:
-it #defines either TBL68000 or TBL86020.
+it #defines either TBL68000 or TBL86020, and it defines WORD_SIZE to either
+2 or 4.
 The m68k4(TBL68000) cg can very well be used for the MC68010 processor,
 for it makes rather efficient use of the 68010 loop mode.
 
-The mach.[ch] files are also suitable for both the m68020 and the m68k4.
+The mach.[ch] files are also suitable for both the m68020 and the m68k[24].
diff --git a/mach/m68020/ncg/table b/mach/m68020/ncg/table
index a8b516a00..c07da6a8b 100644
--- a/mach/m68020/ncg/table
+++ b/mach/m68020/ncg/table
@@ -4765,7 +4765,7 @@ proc logndef
 with any_int STACK
     uses AA_REG,
 	 DD_REG,
-	 DD_REG4
+	 DD_REG4={const,0}
     gen
 	move %1, %c.1
 	lea {regAregXcon, sp, %c, 1, 0},%a
@@ -4869,7 +4869,7 @@ with DD_REG STACK
 pat com !defined($1)
 with any_int STACK
     uses AA_REG,
-	 DD_REG4
+	 DD_REG4={const,0}
     gen move %1, %b.1
 	move_l sp, %a
 	asr_l {small_const, 1}, %b
diff --git a/mach/m68k2/ncg/README b/mach/m68k2/ncg/README
index 327b53abd..1849c66e5 100644
--- a/mach/m68k2/ncg/README
+++ b/mach/m68k2/ncg/README
@@ -1,10 +1,11 @@
 The file 'table' in this directory contains a back end table for the
-MC68020 processor as well as one for the MC68000. Both tables use 4 bytes
-for words as well as for pointers. The table must be preprocessed first
+MC68020 processor as well as one for the MC68000. Both tables use 2 or 4 bytes
+for words and 4 bytes for pointers. The table must be preprocessed first
 by the C preprocessor.
 The file "whichone.h" specifies which code generator is generated:
-it #defines either TBL68000 or TBL86020.
+it #defines either TBL68000 or TBL86020, and it defines WORD_SIZE to either
+2 or 4.
 The m68k4(TBL68000) cg can very well be used for the MC68010 processor,
 for it makes rather efficient use of the 68010 loop mode.
 
-The mach.[ch] files are also suitable for both the m68020 and the m68k4.
+The mach.[ch] files are also suitable for both the m68020 and the m68k[24].
diff --git a/mach/m68k2/ncg/table b/mach/m68k2/ncg/table
index a8b516a00..c07da6a8b 100644
--- a/mach/m68k2/ncg/table
+++ b/mach/m68k2/ncg/table
@@ -4765,7 +4765,7 @@ proc logndef
 with any_int STACK
     uses AA_REG,
 	 DD_REG,
-	 DD_REG4
+	 DD_REG4={const,0}
     gen
 	move %1, %c.1
 	lea {regAregXcon, sp, %c, 1, 0},%a
@@ -4869,7 +4869,7 @@ with DD_REG STACK
 pat com !defined($1)
 with any_int STACK
     uses AA_REG,
-	 DD_REG4
+	 DD_REG4={const,0}
     gen move %1, %b.1
 	move_l sp, %a
 	asr_l {small_const, 1}, %b
diff --git a/mach/m68k4/ncg/README b/mach/m68k4/ncg/README
index 327b53abd..1849c66e5 100644
--- a/mach/m68k4/ncg/README
+++ b/mach/m68k4/ncg/README
@@ -1,10 +1,11 @@
 The file 'table' in this directory contains a back end table for the
-MC68020 processor as well as one for the MC68000. Both tables use 4 bytes
-for words as well as for pointers. The table must be preprocessed first
+MC68020 processor as well as one for the MC68000. Both tables use 2 or 4 bytes
+for words and 4 bytes for pointers. The table must be preprocessed first
 by the C preprocessor.
 The file "whichone.h" specifies which code generator is generated:
-it #defines either TBL68000 or TBL86020.
+it #defines either TBL68000 or TBL86020, and it defines WORD_SIZE to either
+2 or 4.
 The m68k4(TBL68000) cg can very well be used for the MC68010 processor,
 for it makes rather efficient use of the 68010 loop mode.
 
-The mach.[ch] files are also suitable for both the m68020 and the m68k4.
+The mach.[ch] files are also suitable for both the m68020 and the m68k[24].
diff --git a/mach/m68k4/ncg/table b/mach/m68k4/ncg/table
index a8b516a00..c07da6a8b 100644
--- a/mach/m68k4/ncg/table
+++ b/mach/m68k4/ncg/table
@@ -4765,7 +4765,7 @@ proc logndef
 with any_int STACK
     uses AA_REG,
 	 DD_REG,
-	 DD_REG4
+	 DD_REG4={const,0}
     gen
 	move %1, %c.1
 	lea {regAregXcon, sp, %c, 1, 0},%a
@@ -4869,7 +4869,7 @@ with DD_REG STACK
 pat com !defined($1)
 with any_int STACK
     uses AA_REG,
-	 DD_REG4
+	 DD_REG4={const,0}
     gen move %1, %b.1
 	move_l sp, %a
 	asr_l {small_const, 1}, %b
diff --git a/mach/moon3/ncg/README b/mach/moon3/ncg/README
index 327b53abd..1849c66e5 100644
--- a/mach/moon3/ncg/README
+++ b/mach/moon3/ncg/README
@@ -1,10 +1,11 @@
 The file 'table' in this directory contains a back end table for the
-MC68020 processor as well as one for the MC68000. Both tables use 4 bytes
-for words as well as for pointers. The table must be preprocessed first
+MC68020 processor as well as one for the MC68000. Both tables use 2 or 4 bytes
+for words and 4 bytes for pointers. The table must be preprocessed first
 by the C preprocessor.
 The file "whichone.h" specifies which code generator is generated:
-it #defines either TBL68000 or TBL86020.
+it #defines either TBL68000 or TBL86020, and it defines WORD_SIZE to either
+2 or 4.
 The m68k4(TBL68000) cg can very well be used for the MC68010 processor,
 for it makes rather efficient use of the 68010 loop mode.
 
-The mach.[ch] files are also suitable for both the m68020 and the m68k4.
+The mach.[ch] files are also suitable for both the m68020 and the m68k[24].
diff --git a/mach/moon3/ncg/table b/mach/moon3/ncg/table
index a8b516a00..c07da6a8b 100644
--- a/mach/moon3/ncg/table
+++ b/mach/moon3/ncg/table
@@ -4765,7 +4765,7 @@ proc logndef
 with any_int STACK
     uses AA_REG,
 	 DD_REG,
-	 DD_REG4
+	 DD_REG4={const,0}
     gen
 	move %1, %c.1
 	lea {regAregXcon, sp, %c, 1, 0},%a
@@ -4869,7 +4869,7 @@ with DD_REG STACK
 pat com !defined($1)
 with any_int STACK
     uses AA_REG,
-	 DD_REG4
+	 DD_REG4={const,0}
     gen move %1, %b.1
 	move_l sp, %a
 	asr_l {small_const, 1}, %b