diff --git a/checksum/build.sh b/checksum/build.sh
new file mode 100755
index 0000000..c51971c
--- /dev/null
+++ b/checksum/build.sh
@@ -0,0 +1,35 @@
+#!/bin/sh -e
+
+ASM="uxncli $HOME/roms/drifblim.rom"
+EMU="uxncli"
+LIN="uxncli $HOME/roms/uxnlin.rom"
+APP="$HOME/bin/butler push"
+
+SRC="checksum.tal"
+DST="checksum.rom"
+
+CPY="$HOME/roms"
+ARG="test.txt"
+
+echo ">> Cleaning"
+rm -rf bin
+mkdir bin
+
+if [[ "$*" == *"--lint"* ]]
+then
+    echo ">> Linting $SRC"
+	$LIN $SRC
+fi
+
+echo ">> Assembling $SRC"
+$ASM $SRC $DST
+
+if [[ "$*" == *"--save"* ]]
+then
+    echo ">> Saving $DST"
+	cp $DST $CPY
+fi
+
+echo ">> Running $DST"
+$EMU $DST $ARG
+
diff --git a/checksum/checksum.tal b/checksum/checksum.tal
index df40f59..c03897f 100644
--- a/checksum/checksum.tal
+++ b/checksum/checksum.tal
@@ -10,7 +10,6 @@
 |0100 ( -> )
 
 	;await-src .Console/vector DEO2
-	;dict/input pstr
 
 BRK
 
@@ -23,13 +22,14 @@ BRK
 
 @on-ready ( -> )
 
-	#0a18 DEO
-	;src hash plong
-	#0a18 DEO
+	;src hash plong #2018 DEO ;src pstr #0a18 DEO
 	#010f DEO
 
 BRK
 
+(
+@|core )
+
 @hash ( filename* -- x* y* )
 
 	.File/name DEO2
@@ -46,6 +46,9 @@ BRK
 
 JMP2r
 
+(
+@|stdlib )
+
 @scap ( str* -- end* )
 	LDAk #00 NEQ [ JMP JMP2r ] &w INC2 LDAk ?&w JMP2r
 @sput ( chr str* -- )
@@ -59,6 +62,4 @@ JMP2r
 	&s SWP plong/b
 	&b DUP #04 SFT plong/c
 	&c #0f AND DUP #09 GTH #27 MUL ADD #30 ADD #18 DEO JMP2r
-@dict
-	&input "Input(.tal): 20 $1