- uncomment "read" in sys1.s.

- added tool for building with v7 'as' using apout.

sys1.s

@@ -1,7 +1,7 @@
 rele    = 0.
 exit    = 1.
 fork    = 2.
-/ read    = 3.
+read    = 3.
 write   = 4.
 open    = 5.
 close   = 6.

tools/assemv7

@@ -0,0 +1,32 @@
+#!/bin/sh
+#
+# assemble the sources
+#
+
+# settings
+APOUT=/tmp/apout2.3alpha2/apout
+APOUT_ROOT=/tmp/v7
+COLD=1
+
+export APOUT_ROOT
+
+tools/rebuild
+
+# fix "mount" issue which 1ed as cant deal with
+# and also fix up the vector table in u0.s since
+# the result is a slightly different format a.out that doesnt
+# include the header in the text segment
+test -d build || mkdir build
+for f in rebuilt/u?.s ; do
+    b=`basename $f`
+    if [ $COLD = 1 ] ; then
+        sed -e 's/.*init by copy.*/4;4;unkni;0;fpsym;0/' \
+            -e 's/cold = 0/cold = 1/' < $f > build/$b
+    else 
+        sed -e 's/.*init by copy.*/4;4;unkni;0;fpsym;0/' < $f > build/$b
+    fi
+done
+
+cd build
+$APOUT $APOUT_ROOT/bin/as ../sys1.s u?.s
+