diff --git a/dka-crtls/ds_arm9_crt0.s b/dka-crtls/ds_arm9_crt0.s
index e822964..16b4a3c 100644
--- a/dka-crtls/ds_arm9_crt0.s
+++ b/dka-crtls/ds_arm9_crt0.s
@@ -1,3 +1,25 @@
+#define PAGE_4K		(0b01011 << 1)
+#define PAGE_8K		(0b01100 << 1)
+#define PAGE_16K	(0b01101 << 1)
+#define PAGE_32K	(0b01110 << 1)
+#define PAGE_64K	(0b00111 << 1)
+#define PAGE_128K	(0b10000 << 1)
+#define PAGE_256K	(0b10001 << 1)
+#define PAGE_512K	(0b10010 << 1)
+#define PAGE_1M		(0b10011 << 1)
+#define PAGE_2M		(0b10100 << 1)
+#define PAGE_4M		(0b10101 << 1)
+#define PAGE_8M		(0b10110 << 1)
+#define PAGE_16M	(0b10111 << 1)
+#define PAGE_32M	(0b11000 << 1)
+#define PAGE_64M	(0b11001 << 1)
+#define PAGE_128M	(0b11010 << 1)
+#define PAGE_256M	(0b11011 << 1)
+#define PAGE_512M	(0b11100 << 1)
+#define PAGE_1G		(0b11101 << 1)
+#define PAGE_2G		(0b11110 << 1)
+#define PAGE_4G		(0b11111 << 1)
+
 @---------------------------------------------------------------------------------
 	.section ".init"
 	.global _start
@@ -34,52 +56,87 @@ _start:
 @ Setup memory regions similar to Release Version
 @	this code currently breaks dualis
 @---------------------------------------------------------------------------------
-
-/*	ldr	r0,=(0b110010 | 0x04000000 | 1)	
+
+	@-------------------------------------------------------------------------
+	@ Region 0 - IO registers
+	@-------------------------------------------------------------------------
+	ldr	r0,=( PAGE_64M | 0x04000000 | 1)	
 	mcr	p15, 0, r0, c6, c0, 0
 
-	ldr	r0,=(0b101010  | 0x02000000 | 1)	
+	@-------------------------------------------------------------------------
+	@ Region 1 - Main Memory
+	@-------------------------------------------------------------------------
+	ldr	r0,=( PAGE_4M | 0x02000000 | 1)	
 	mcr	p15, 0, r0, c6, c1, 0
 
-	ldr	r0,=(0b100010| 0x027C0000 | 1)	
+	@-------------------------------------------------------------------------
+	@ Region 2 - iwram
+	@-------------------------------------------------------------------------
+	ldr	r0,=( PAGE_32K | 0x037F8000 | 1)	
 	mcr	p15, 0, r0, c6, c2, 0
 
-	ldr	r0,=(0b110100| 0x08000000 | 1)	
+	@-------------------------------------------------------------------------
+	@ Region 3 - DS Accessory
+	@-------------------------------------------------------------------------
+	ldr	r0,=( PAGE_128M | 0x08000000 | 1)	
 	mcr	p15, 0, r0, c6, c3, 0
 
-	@ldr	r0,=(0b011010 | 0x027C0000 | 1)	
-	ldr	r0,=(0b011010 | 0x00800000 | 1)	
+	@-------------------------------------------------------------------------
+	@ Region 4 - DTCM
+	@-------------------------------------------------------------------------
+	@ldr	r0,=( PAGE_16K | 0x027C0000 | 1)	
+	ldr	r0,=( PAGE_16K | 0x00800000 | 1)	
 	mcr	p15, 0, r0, c6, c4, 0
 
-	ldr	r0,=(0b011100 | 0x01000000 | 1)	
+	@-------------------------------------------------------------------------
+	@ Region 5 - ITCM
+	@-------------------------------------------------------------------------
+	ldr	r0,=( PAGE_32K | 0x01000000 | 1)	
 	mcr	p15, 0, r0, c6, c5, 0
 
-	ldr	r0,=(0b011100 | 0xFFFF0000 | 1)	
+	@-------------------------------------------------------------------------
+	@ Region 6 - System ROM
+	@-------------------------------------------------------------------------
+	ldr	r0,=( PAGE_32K | 0xFFFF0000 | 1)	
 	mcr	p15, 0, r0, c6, c6, 0
 
-	ldr	r0,=(0b010110  | 0x027FF000 | 1)	
+	@-------------------------------------------------------------------------
+	@ Region 7
+	@-------------------------------------------------------------------------
+	ldr	r0,=( PAGE_4K  | 0x027FF000 | 1)	
 	mcr	p15, 0, r0, c6, c7, 0
-*/
+
+	@-------------------------------------------------------------------------
 	@ Write buffer enable
-	ldr	r0,=0x2
+	@-------------------------------------------------------------------------
+	ldr	r0,=0b00000110
 	mcr	p15, 0, r0, c3, c0, 0
 
+	@-------------------------------------------------------------------------
 	@ DCache & ICache enable
+	@-------------------------------------------------------------------------
+	ldr	r0,=0b01000110
 	ldr	r0,=0x42
 	mcr	p15, 0, r0, c2, c0, 0
 	mcr	p15, 0, r0, c2, c0, 1
 
+	@-------------------------------------------------------------------------
 	@ IAccess
-	ldr	r0,=0x05100011
+	@-------------------------------------------------------------------------
+	ldr	r0,=0x06300333
 	mcr	p15, 0, r0, c5, c0, 3
 
+	@-------------------------------------------------------------------------
 	@ DAccess
-	ldr	r0,=0x15111011
+	@-------------------------------------------------------------------------
+	ldr	r0,=0x36633333
 	mcr     p15, 0, r0, c5, c0, 2
 
+	@-------------------------------------------------------------------------
 	@ Enable ICache, DCache, ITCM & DTCM
+	@-------------------------------------------------------------------------
 	mrc	p15, 0, r0, c1, c0, 0
-	ldr	r1,=0x55004
+	ldr	r1,=0x55005
 	orr	r0,r0,r1
 	mcr	p15, 0, r0, c1, c0, 0
 
@@ -87,6 +144,10 @@ _start:
 	msr	cpsr, r0
 	ldr	sp, =__sp_irq		@ Set IRQ stack
 
+	mov	r0, #0x13		@ Switch to SVC Mode
+	msr	cpsr, r0
+	ldr	sp, =__sp_svc		@ Set SVC stack
+
 	mov	r0, #0x1F		@ Switch to System Mode
 	msr	cpsr, r0
 	ldr	sp, =__sp_usr		@ Set user stack