diff --git a/agb/crt0.s b/agb/crt0.s
index 47de3b86..a71b819b 100644
--- a/agb/crt0.s
+++ b/agb/crt0.s
@@ -22,31 +22,7 @@ b .Initialise_mb
     ldr r1, =0x03007FFC
     str r0, [r1]
 
-    @ copies iwram section in ewram to iwram
-    ldr r0, =__iwram_rom_start              @ load memory address storing start of data for iwram in rom
-    ldr r1, =__iwram_data_start             @ load memory address storing location of iwram in ram
-    ldr r2, =__iwram_rom_length_halfwords   @ load number of 16 bit values to copy
-    swi 0x000B0000                          @ call interrupt CpuSet.
-                                            @   r0: source
-                                            @   r1: destination
-                                            @   r2: length + size information
-                                            @
-                                            @ see: https://mgba-emu.github.io/gbatek/#swi-0bh-gbands7nds9dsi7dsi9---cpuset
-    
-    @ everything is in ewram so it is already there, no need to copy that bit
-
-    @ put zero in both r0 and r1
-    @ This corresponds to zero for argc and argv (which would technically be required for a c runtime)
-    ldr r0, =0
-    mov r1, r0
-
-    @ load main and branch
-    ldr r2, =main
-    bx  r2
-
-    @ loop if we end up here
-1:
-    b 1b
+    b .CommonInit
 
 .Initialise:
     @ Set interrupt handler
@@ -54,24 +30,23 @@ b .Initialise_mb
     ldr r1, =0x03007FFC
     str r0, [r1]
 
-
-    @ copies iwram section in rom to iwram in ram
-    ldr r0, =__iwram_rom_start              @ load memory address storing start of data for iwram in rom
-    ldr r1, =__iwram_data_start             @ load memory address storing location of iwram in ram
-    ldr r2, =__iwram_rom_length_halfwords   @ load number of 16 bit values to copy
-    swi 0x000B0000                          @ call interrupt CpuSet.
-                                            @   r0: source
-                                            @   r1: destination
-                                            @   r2: length + size information
-                                            @
-                                            @ see: https://mgba-emu.github.io/gbatek/#swi-0bh-gbands7nds9dsi7dsi9---cpuset
-
     @ copies ewram section in rom to ewram in ram
-    ldr r0, =__ewram_rom_start
-    ldr r1, =__ewram_data_start
-    ldr r2, =__ewram_rom_length_halfwords
-    swi 0x000B0000
+    ldr r0, =__ewram_rom_start                 @ load memory address storing start of data for ewram in rom
+    ldr r1, =__ewram_data_start                @ load memory address storing location of ewram in ram
+    ldr r2, =__ewram_rom_length_halfwords      @ load number of 16 bit values to copy
+    swi 0x000B0000                             @ call interrupt CpuSet.
+                                               @   r0: source
+                                               @   r1: destination
+                                               @   r2: length + size information
+                                               @
+                                               @ see: https://mgba-emu.github.io/gbatek/#swi-0bh-gbands7nds9dsi7dsi9---cpuset
 
+.CommonInit:
+    @ copies iwram section in rom to iwram in ram
+    ldr r0, =__iwram_rom_start
+    ldr r1, =__iwram_data_start
+    ldr r2, =__iwram_rom_length_halfwords
+    swi 0x000B0000
 
     @ put zero in both r0 and r1
     @ This corresponds to zero for argc and argv (which would technically be required for a c runtime)