diff --git a/build/Notes.md b/build/Notes.md
index 0a7bba8..e2189fb 100644
--- a/build/Notes.md
+++ b/build/Notes.md
@@ -154,4 +154,12 @@ adjusted shell to take 10 arguments
 
 load sys sources into ken directory
 along with "sys.rc" file (run with "sh <sys.rc") to build system files
-(errors building maksys and trysys)
+
+load as.s into dmr directory
+verified as7 built as can assemble as.s
+and resulting a.out (once renamed to nas) assembles as.s
+
+verified ESCAPE leaves 010100 word core file (file with i-num #1)
+
+
+
diff --git a/build/fs/sys.rc b/build/fs/sys.rc
index fbf6196..368f409 100644
--- a/build/fs/sys.rc
+++ b/build/fs/sys.rc
@@ -1,5 +1,8 @@
-as sop.s maksys.s
+chrm ken ops.s
+ln dmr ops.s ops.s
+as sop.s ops.s maksys.s
 mv a.out maksys
-as sop.s trysys.s
+as sop.s ops.s trysys.s
 mv a.out trysys
+chrm ken ops.s
 as sop.s s1.s s2.s s3.s s4.s s5.s s6.s s7.s s8.s
diff --git a/build/proto b/build/proto
index e488876..ae8e9ca 100644
--- a/build/proto
+++ b/build/proto
@@ -61,6 +61,7 @@ dd 	         drwr- -1 4
       $
     dmr        drwr- 12
       system   l----  3
+      as.s     frwr- 12 ../src/cmd/as.s
       b_readme frwr- 12 fs/b_readme
       bi.s     frwr- 12 ../src/cmd/bi.s
       bl.s     frwr- 12 ../src/cmd/bl.s