diff --git a/demos/o/dsr_scroll.s b/demos/o/dsr_scroll.s
index 73000c60..bd5f633c 100644
--- a/demos/o/dsr_scroll.s
+++ b/demos/o/dsr_scroll.s
@@ -64,8 +64,16 @@ SETGR		= $FB40
 WAIT		= $FCA8		; delay 1/2(26+27A+5A^2) us
 
 
+; d000 was first
+; f300 not bad
+; f400 good
+; f500 so so
+; f600 less so
+; f700 soso
+; f800
 
-pattern1	= $d000		; location in memory to use as
+pattern1	= $f800		; location in memory to use as
+;pattern1	= $d000		; location in memory to use as
 				; background pixel pattern
 
 
diff --git a/demos/o/file_id.diz b/demos/o/file_id.diz
new file mode 100644
index 00000000..d467ea1e
--- /dev/null
+++ b/demos/o/file_id.diz
@@ -0,0 +1,14 @@
+dSr Scroll
+-
+256-byte Intro for Apple II, Outline 2022
+by Deater / dSr
+
+Wiggles the Desire logo in Hires (shape tables and page flip)
+Then scrolls some lo-res chunky pixels under a DSR logo.
+The lo-res pattern is just ROM/RAM contents, so some of it
+might look a bit different depending on the state of RAM.
+
+It plays some sound through the beeper/speaker.  No timers
+on the Apple II so that's all cycle counted.
+
+There are various tricks going on to make this all fit.