diff --git a/build.sh b/build.sh
index 911c561..063b502 100755
--- a/build.sh
+++ b/build.sh
@@ -1,41 +1,35 @@
 #!/bin/sh -e
 
+ID="nasu"
 ASM="uxncli $HOME/roms/drifblim.rom"
 EMU="uxnemu"
 LIN="uxncli $HOME/roms/uxnlin.rom"
 APP="$HOME/bin/butler push"
-
-SRC="src/nasu.tal"
-DST="bin/nasu.rom"
+SRC="src/${ID}.tal"
+DST="bin/${ID}.rom"
 
 CPY="$HOME/roms"
 ARG=""
 APPID="hundredrabbits/nasu:uxn"
 
-echo ">> Cleaning"
 rm -rf bin
 mkdir bin
 
 if [[ "$*" == *"--lint"* ]]
 then
-    echo ">> Linting $SRC"
 	$LIN $SRC
 fi
 
-echo ">> Assembling $SRC"
 $ASM $SRC $DST
 
 if [[ "$*" == *"--save"* ]]
 then
-    echo ">> Saving $DST"
 	cp $DST $CPY
 fi
 
 if [[ "$*" == *"--push"* ]]
 then
-    echo ">> Pushing $DST"
 	$APP $DST $APPID
 fi
 
-echo ">> Running $DST"
 $EMU $DST $ARG
diff --git a/src/assets.tal b/src/assets.tal
index d07b27c..08f64b0 100644
--- a/src/assets.tal
+++ b/src/assets.tal
@@ -1,5 +1,3 @@
-@fill-icn
-	ffff ffff ffff ffff
 @bigpixel-icn
     f0f0 f0f0 0000 0000
 @halftone-icn
diff --git a/src/manifest.tal b/src/manifest.tal
index 77d25bc..c45bf64 100644
--- a/src/manifest.tal
+++ b/src/manifest.tal
@@ -260,7 +260,7 @@ JMP2r
 	.Screen/y DEI2
 		.Screen/auto DEI
 			#f2 .Screen/auto DEO
-			;blank-icn .Screen/addr DEO2
+			;fill-icn ;blank-icn ;draw-chr/color LDA #00 EQU [ JMP SWP2 POP2 ] .Screen/addr DEO2
 			;draw-chr/color LDA .Screen/sprite DEO
 		.Screen/auto DEO
 	.Screen/y DEO2
@@ -309,6 +309,7 @@ JMP2r
 @update-cursor ( color addr* -- )
 
 	#00 .Screen/auto DEO
+	;fill-icn .Screen/addr DEO2
 	#40 draw-cursor
 	.Mouse/x DEI2 DUP2 .cursor/x STZ2 .Screen/x DEO2
 	.Mouse/y DEI2 DUP2 .cursor/y STZ2 .Screen/y DEO2
@@ -446,5 +447,7 @@ JMP2r
 	2020 20b8 7c7c 3838 ]
 @blank-icn [
 	0000 0000 0000 0000 ]
+@fill-icn [
+	ffff ffff ffff ffff ]
 
 ~src/assets.tal