1 files changed, 13 insertions, 0 deletions
diff --git a/mix/1.3.1/21.mixal b/mix/1.3.1/21.mixal
new file mode 100644
index 0000000..2ede2ae
--- /dev/null
+++ b/mix/1.3.1/21.mixal
@@ -0,0 +1,13 @@
+TERM      ORIG 3000
+START     DEC4 1
+          LDA 3008
+          STA 0,4
+          ENTA 0,4
+          SLA 3
+          ADD 3008(5:5)
+          LDX 3008
+          STA 3008
+          JMP 3009
+          STZ 0,4
+          STX 3008
+          END START