diff --git a/src/fib.z80 b/src/fib.z80
index 27fad6c..8698e93 100644
--- a/src/fib.z80
+++ b/src/fib.z80
@@ -1,8 +1,16 @@
-.org 0x1500
-	jp main
+_ram_start equ 0x1600
 
+#target rom
+
+#code _HOME, 0x1500          ; Non-banked part of memory
+
+#data _DATA, _ram_start ; Uninitialized variables
+
+#code _HOME
 main:
 init:
+	ld hl, _DATA
+
 	ld a, (amount)
 	ld d, a