added a buffer of 64 bytes for some easily accesible persistent storage accesable via p@ and p!

p.sl

@@ -0,0 +1,9 @@
+import stdlib/stdlib.sl
+import stdlib/io.sl
+
+: main
+    12345 0 p!    # store 12345 at offset 0
+    0 p@ puti cr  # read and print value at offset 0
+    67890 8 p!    # store 67890 at offset 8
+    8 p@ puti cr  # read and print value at offset 8
+;