Merge pull request #6 from camthesaxman/titlescreen

decompile the rest of titlescreen.s and import agb_sram library and strlen function

18 files changed, 345 insertions, 1041 deletions

diff --git a/Makefile b/Makefile
index 94bfc73..f6b6a80 100755
--- a/Makefile
+++ b/Makefile
@@ -112,6 +112,9 @@ $(C_BUILDDIR)/m4a_2.o: CC1 := tools/agbcc/bin/old_agbcc
 $(C_BUILDDIR)/m4a_4.o: CC1 := tools/agbcc/bin/old_agbcc
 $(C_BUILDDIR)/m4a.o: CC1 := tools/agbcc/bin/old_agbcc
 
+$(C_BUILDDIR)/agb_sram.o: CFLAGS := -mthumb-interwork -Wimplicit -Wparentheses -Werror -O1
+$(C_BUILDDIR)/agb_sram.o: CC1 := tools/agbcc/bin/old_agbcc
+
 ifeq ($(NODEP),)
 $(C_BUILDDIR)/%.o: c_dep = $(shell $(SCANINC) -I include $(C_SUBDIR)/$*.c)
 else
diff --git a/asm/rom_3219C.s b/asm/rom_3219C.s
index 270885e..af67f74 100755
--- a/asm/rom_3219C.s
+++ b/asm/rom_3219C.s
@@ -49099,7 +49099,7 @@ sub_4B654: @ 0x0804B654
 	str r1, [r0]
 	ldr r1, _0804B670 @ =0x0E000544
 	ldr r2, _0804B674 @ =0x00001410
-	bl sub_55654
+	bl WriteAndVerifySramFast
 	pop {r0}
 	bx r0
 	.align 2, 0
@@ -49119,7 +49119,7 @@ sub_4B678: @ 0x0804B678
 	mov r8, r0
 	cmp r0, #1
 	bne _0804B6B0
-	ldr r3, _0804B6A0 @ =gUnknown_02032FF0
+	ldr r3, _0804B6A0 @ =ReadSramFast
 	ldr r0, _0804B6A4 @ =0x0E000544
 	ldr r1, _0804B6A8 @ =gUnknown_020314E0
 	ldr r1, [r1]
@@ -49128,7 +49128,7 @@ sub_4B678: @ 0x0804B678
 	bl _call_via_r3
 	b _0804B746
 	.align 2, 0
-_0804B6A0: .4byte gUnknown_02032FF0
+_0804B6A0: .4byte ReadSramFast
 _0804B6A4: .4byte 0x0E000544
 _0804B6A8: .4byte gUnknown_020314E0
 _0804B6AC: .4byte 0x00001410
@@ -49779,7 +49779,7 @@ _0804BBCC:
 	ldr r1, _0804BC30 @ =0x0E000544
 	adds r0, r6, #0
 	movs r2, #4
-	bl sub_55654
+	bl WriteAndVerifySramFast
 _0804BC14:
 	pop {r3, r4, r5}
 	mov r8, r3
diff --git a/asm/rom_528AC.s b/asm/rom_528AC.s
index f5f2b88..171370b 100755
--- a/asm/rom_528AC.s
+++ b/asm/rom_528AC.s
@@ -189,7 +189,7 @@ _08052A14: .4byte gUnknown_08533F60
 	thumb_func_start sub_52A18
 sub_52A18: @ 0x08052A18
 	push {r4, lr}
-	bl sub_555BC
+	bl SetSramFastFunc
 	ldr r4, _08052A4C @ =gMain
 	movs r0, #0
 	strb r0, [r4, #0xc]
@@ -232,7 +232,7 @@ sub_52A68: @ 0x08052A68
 	movs r0, #0
 	mov r8, r0
 	movs r7, #0
-	ldr r1, _08052B04 @ =gUnknown_02032FF0
+	ldr r1, _08052B04 @ =ReadSramFast
 	mov sb, r1
 _08052A7A:
 	ldr r5, _08052B08 @ =gUnknown_0200B134
@@ -309,7 +309,7 @@ _08052AF0:
 	mov r8, r6
 	b _08052B22
 	.align 2, 0
-_08052B04: .4byte gUnknown_02032FF0
+_08052B04: .4byte ReadSramFast
 _08052B08: .4byte gUnknown_0200B134
 _08052B0C: .4byte 0x0E000004
 _08052B10: .4byte gUnknown_086BBA6C
@@ -377,11 +377,11 @@ _08052B6A:
 	lsls r4, r4, #2
 	adds r0, r5, #0
 	adds r2, r4, #0
-	bl sub_55654
+	bl WriteAndVerifySramFast
 	ldr r1, _08052BAC @ =0x0E0002A4
 	adds r0, r5, #0
 	adds r2, r4, #0
-	bl sub_55654
+	bl WriteAndVerifySramFast
 	pop {r4, r5}
 	pop {r0}
 	bx r0
@@ -449,11 +449,11 @@ _08052BFC:
 	lsls r4, r4, #2
 	adds r0, r6, #0
 	adds r2, r4, #0
-	bl sub_55654
+	bl WriteAndVerifySramFast
 	ldr r1, _08052C40 @ =0x0E0002A4
 	adds r0, r6, #0
 	adds r2, r4, #0
-	bl sub_55654
+	bl WriteAndVerifySramFast
 _08052C28:
 	pop {r4, r5, r6}
 	pop {r0}
@@ -468,7 +468,7 @@ _08052C40: .4byte 0x0E0002A4
 	thumb_func_start sub_52C44
 sub_52C44: @ 0x08052C44
 	push {lr}
-	ldr r2, _08052C58 @ =gUnknown_02032FF0
+	ldr r2, _08052C58 @ =ReadSramFast
 	ldr r0, _08052C5C @ =0x0E000544
 	ldr r1, _08052C60 @ =gUnknown_0200B100
 	ldr r3, [r2]
@@ -477,7 +477,7 @@ sub_52C44: @ 0x08052C44
 	pop {r0}
 	bx r0
 	.align 2, 0
-_08052C58: .4byte gUnknown_02032FF0
+_08052C58: .4byte ReadSramFast
 _08052C5C: .4byte 0x0E000544
 _08052C60: .4byte gUnknown_0200B100
 
diff --git a/asm/titlescreen.s b/asm/titlescreen.s
deleted file mode 100755
index 0d127f7..0000000
--- a/asm/titlescreen.s
+++ /dev/null
@@ -1,681 +0,0 @@
-	.include "asm/macros.inc"
-
-	.syntax unified
-
-	.text
-
-	thumb_func_start sub_11640
-sub_11640: @ 0x08011640
-	push {r4, r5, r6, r7, lr}
-	mov r7, sb
-	mov r6, r8
-	push {r6, r7}
-	ldr r4, _08011744 @ =gTitlescreen
-	movs r0, #8
-	ldrsb r0, [r4, r0]
-	movs r1, #0xb8
-	muls r0, r1, r0
-	ldr r2, _08011748 @ =gUnknown_0200B3B8
-	adds r7, r0, r2
-	movs r0, #0x10
-	ldrsb r0, [r4, r0]
-	muls r0, r1, r0
-	adds r6, r0, r2
-	movs r0, #9
-	ldrsb r0, [r4, r0]
-	strh r0, [r7]
-	movs r0, #0x11
-	ldrsb r0, [r4, r0]
-	strh r0, [r6]
-	ldr r5, _0801174C @ =gUnknown_086A96E4
-	adds r0, r5, #0
-	movs r1, #5
-	bl LoadSpriteSets
-	ldrh r0, [r7]
-	cmp r0, #1
-	bne _080116DC
-	movs r0, #0x78
-	strh r0, [r7, #2]
-	movs r0, #0x66
-	strh r0, [r7, #4]
-	movs r0, #8
-	ldrsb r0, [r4, r0]
-	lsls r0, r0, #2
-	adds r0, r0, r5
-	ldr r0, [r0]
-	mov ip, r0
-	movs r5, #0
-	ldrh r0, [r0]
-	cmp r5, r0
-	bge _080116DC
-	ldr r1, _08011750 @ =gOamBuffer
-	mov r8, r1
-	ldr r2, _08011754 @ =0xFFFFFE00
-	mov sb, r2
-	adds r4, r7, #0
-	adds r4, #8
-_080116A2:
-	ldrh r3, [r4]
-	lsls r3, r3, #3
-	add r3, r8
-	movs r0, #2
-	ldrsh r1, [r4, r0]
-	movs r2, #2
-	ldrsh r0, [r7, r2]
-	adds r1, r1, r0
-	ldr r2, _08011758 @ =0x000001FF
-	adds r0, r2, #0
-	ands r1, r0
-	ldrh r2, [r3, #2]
-	mov r0, sb
-	ands r0, r2
-	orrs r0, r1
-	strh r0, [r3, #2]
-	ldrh r1, [r4]
-	lsls r1, r1, #3
-	add r1, r8
-	ldrb r0, [r7, #4]
-	ldrb r2, [r4, #4]
-	adds r0, r0, r2
-	strb r0, [r1]
-	adds r4, #8
-	adds r5, #1
-	mov r0, ip
-	ldrh r0, [r0]
-	cmp r5, r0
-	blt _080116A2
-_080116DC:
-	ldrh r0, [r6]
-	cmp r0, #1
-	bne _08011730
-	movs r0, #0x78
-	strh r0, [r6, #2]
-	movs r0, #0x50
-	strh r0, [r6, #4]
-	ldr r1, _08011750 @ =gOamBuffer
-	mov r8, r1
-	ldr r2, _08011754 @ =0xFFFFFE00
-	mov sb, r2
-	adds r4, r6, #0
-	adds r4, #8
-	ldr r0, _08011758 @ =0x000001FF
-	mov ip, r0
-	movs r5, #1
-_080116FC:
-	ldrh r3, [r4]
-	lsls r3, r3, #3
-	add r3, r8
-	movs r2, #2
-	ldrsh r1, [r4, r2]
-	movs r2, #2
-	ldrsh r0, [r6, r2]
-	adds r1, r1, r0
-	mov r0, ip
-	ands r1, r0
-	ldrh r2, [r3, #2]
-	mov r0, sb
-	ands r0, r2
-	orrs r0, r1
-	strh r0, [r3, #2]
-	ldrh r1, [r4]
-	lsls r1, r1, #3
-	add r1, r8
-	ldrb r0, [r6, #4]
-	ldrb r2, [r4, #4]
-	adds r0, r0, r2
-	strb r0, [r1]
-	adds r4, #8
-	subs r5, #1
-	cmp r5, #0
-	bge _080116FC
-_08011730:
-	movs r0, #0
-	strh r0, [r7]
-	strh r0, [r6]
-	pop {r3, r4}
-	mov r8, r3
-	mov sb, r4
-	pop {r4, r5, r6, r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08011744: .4byte gTitlescreen
-_08011748: .4byte gUnknown_0200B3B8
-_0801174C: .4byte gUnknown_086A96E4
-_08011750: .4byte gOamBuffer
-_08011754: .4byte 0xFFFFFE00
-_08011758: .4byte 0x000001FF
-
-	thumb_func_start sub_1175C
-sub_1175C: @ 0x0801175C
-	push {r4, r5, r6, r7, lr}
-	mov r7, sl
-	mov r6, sb
-	mov r5, r8
-	push {r5, r6, r7}
-	sub sp, #4
-	ldr r2, _08011810 @ =gMain
-	ldrh r0, [r2, #0x38]
-	movs r0, #0x84
-	lsls r0, r0, #2
-	strh r0, [r2, #0x38]
-	ldrh r0, [r2, #0x3a]
-	ldr r0, _08011814 @ =0x00000808
-	strh r0, [r2, #0x3a]
-	ldr r1, _08011818 @ =0x04000050
-	ldrh r0, [r2, #0x38]
-	strh r0, [r1]
-	adds r1, #2
-	ldrh r0, [r2, #0x3a]
-	strh r0, [r1]
-	ldr r3, _0801181C @ =gTitlescreen
-	movs r0, #0xa
-	ldrsb r0, [r3, r0]
-	movs r1, #0xb8
-	muls r0, r1, r0
-	movs r4, #0xbe
-	lsls r4, r4, #2
-	adds r2, r2, r4
-	adds r0, r0, r2
-	mov sl, r0
-	movs r0, #0xc
-	ldrsb r0, [r3, r0]
-	muls r0, r1, r0
-	adds r0, r0, r2
-	mov sb, r0
-	movs r0, #0xe
-	ldrsb r0, [r3, r0]
-	muls r0, r1, r0
-	adds r0, r0, r2
-	mov r8, r0
-	movs r0, #0xb
-	ldrsb r0, [r3, r0]
-	mov r6, sl
-	strh r0, [r6]
-	movs r0, #0xd
-	ldrsb r0, [r3, r0]
-	mov r7, sb
-	strh r0, [r7]
-	movs r0, #0xf
-	ldrsb r0, [r3, r0]
-	mov r1, r8
-	strh r0, [r1]
-	ldr r4, _08011820 @ =gUnknown_0201C190
-	adds r0, r4, #0
-	movs r1, #7
-	bl LoadSpriteSets
-	ldrh r0, [r6]
-	cmp r0, #1
-	bne _0801187C
-	movs r0, #0x78
-	strh r0, [r6, #2]
-	movs r0, #0x66
-	strh r0, [r6, #4]
-	ldr r4, [r4, #0x18]
-	mov ip, r4
-	movs r2, #0
-	str r2, [sp]
-	ldrh r3, [r4]
-	cmp r2, r3
-	bge _0801187C
-	ldr r6, _08011824 @ =gOamBuffer
-	mov r4, sl
-	adds r4, #8
-	mov r5, ip
-_080117F2:
-	ldrh r0, [r5, #8]
-	cmp r0, #1
-	bne _08011828
-	ldrh r2, [r4]
-	lsls r2, r2, #3
-	adds r2, r2, r6
-	ldrb r1, [r2, #1]
-	movs r0, #0xd
-	rsbs r0, r0, #0
-	ands r0, r1
-	movs r1, #4
-	orrs r0, r1
-	strb r0, [r2, #1]
-	b _08011838
-	.align 2, 0
-_08011810: .4byte gMain
-_08011814: .4byte 0x00000808
-_08011818: .4byte 0x04000050
-_0801181C: .4byte gTitlescreen
-_08011820: .4byte gUnknown_0201C190
-_08011824: .4byte gOamBuffer
-_08011828:
-	ldrh r0, [r4]
-	lsls r0, r0, #3
-	adds r0, r0, r6
-	ldrb r2, [r0, #1]
-	movs r1, #0xd
-	rsbs r1, r1, #0
-	ands r1, r2
-	strb r1, [r0, #1]
-_08011838:
-	ldrh r3, [r4]
-	lsls r3, r3, #3
-	adds r3, r3, r6
-	movs r7, #2
-	ldrsh r1, [r4, r7]
-	mov r2, sl
-	movs r7, #2
-	ldrsh r0, [r2, r7]
-	adds r1, r1, r0
-	ldr r2, _08011950 @ =0x000001FF
-	adds r0, r2, #0
-	ands r1, r0
-	ldrh r2, [r3, #2]
-	ldr r0, _08011954 @ =0xFFFFFE00
-	ands r0, r2
-	orrs r0, r1
-	strh r0, [r3, #2]
-	ldrh r1, [r4]
-	lsls r1, r1, #3
-	adds r1, r1, r6
-	mov r3, sl
-	ldrb r0, [r3, #4]
-	ldrb r7, [r4, #4]
-	adds r0, r0, r7
-	strb r0, [r1]
-	adds r4, #8
-	adds r5, #8
-	ldr r0, [sp]
-	adds r0, #1
-	str r0, [sp]
-	mov r1, ip
-	ldrh r1, [r1]
-	cmp r0, r1
-	blt _080117F2
-_0801187C:
-	mov r2, sb
-	ldrh r0, [r2]
-	cmp r0, #1
-	bne _080118D8
-	ldr r2, _08011958 @ =gUnknown_086A9684
-	ldr r1, _0801195C @ =gTitlescreen
-	movs r0, #0
-	ldrsb r0, [r1, r0]
-	lsls r0, r0, #2
-	adds r0, r0, r2
-	ldrh r0, [r0]
-	mov r3, sb
-	strh r0, [r3, #2]
-	movs r0, #0
-	ldrsb r0, [r1, r0]
-	lsls r0, r0, #2
-	adds r0, r0, r2
-	ldrh r0, [r0, #2]
-	strh r0, [r3, #4]
-	mov r5, sb
-	adds r5, #8
-	ldr r4, _08011960 @ =gOamBuffer
-	ldrh r2, [r3, #8]
-	lsls r2, r2, #3
-	adds r2, r2, r4
-	movs r6, #2
-	ldrsh r1, [r5, r6]
-	movs r7, #2
-	ldrsh r0, [r3, r7]
-	adds r1, r1, r0
-	ldr r3, _08011950 @ =0x000001FF
-	adds r0, r3, #0
-	ands r1, r0
-	ldrh r3, [r2, #2]
-	ldr r0, _08011954 @ =0xFFFFFE00
-	ands r0, r3
-	orrs r0, r1
-	strh r0, [r2, #2]
-	mov r6, sb
-	ldrh r1, [r6, #8]
-	lsls r1, r1, #3
-	adds r1, r1, r4
-	ldrb r0, [r6, #4]
-	ldrb r5, [r5, #4]
-	adds r0, r0, r5
-	strb r0, [r1]
-_080118D8:
-	mov r7, r8
-	ldrh r0, [r7]
-	cmp r0, #1
-	bne _08011930
-	ldr r2, _08011964 @ =gUnknown_086A9694
-	ldr r1, _0801195C @ =gTitlescreen
-	movs r0, #0
-	ldrsb r0, [r1, r0]
-	lsls r0, r0, #2
-	adds r0, r0, r2
-	ldrh r0, [r0]
-	strh r0, [r7, #2]
-	movs r0, #0
-	ldrsb r0, [r1, r0]
-	lsls r0, r0, #2
-	adds r0, r0, r2
-	ldrh r0, [r0, #2]
-	strh r0, [r7, #4]
-	mov r5, r8
-	adds r5, #8
-	ldr r4, _08011960 @ =gOamBuffer
-	ldrh r2, [r7, #8]
-	lsls r2, r2, #3
-	adds r2, r2, r4
-	movs r0, #2
-	ldrsh r1, [r5, r0]
-	movs r3, #2
-	ldrsh r0, [r7, r3]
-	adds r1, r1, r0
-	ldr r6, _08011950 @ =0x000001FF
-	adds r0, r6, #0
-	ands r1, r0
-	ldrh r3, [r2, #2]
-	ldr r0, _08011954 @ =0xFFFFFE00
-	ands r0, r3
-	orrs r0, r1
-	strh r0, [r2, #2]
-	ldrh r1, [r7, #8]
-	lsls r1, r1, #3
-	adds r1, r1, r4
-	ldrb r0, [r7, #4]
-	ldrb r5, [r5, #4]
-	adds r0, r0, r5
-	strb r0, [r1]
-_08011930:
-	movs r0, #0
-	mov r7, sl
-	strh r0, [r7]
-	mov r1, sb
-	strh r0, [r1]
-	mov r2, r8
-	strh r0, [r2]
-	add sp, #4
-	pop {r3, r4, r5}
-	mov r8, r3
-	mov sb, r4
-	mov sl, r5
-	pop {r4, r5, r6, r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08011950: .4byte 0x000001FF
-_08011954: .4byte 0xFFFFFE00
-_08011958: .4byte gUnknown_086A9684
-_0801195C: .4byte gTitlescreen
-_08011960: .4byte gOamBuffer
-_08011964: .4byte gUnknown_086A9694
-
-	thumb_func_start sub_11968
-sub_11968: @ 0x08011968
-	push {r4, r5, r6, r7, lr}
-	mov r7, sl
-	mov r6, sb
-	mov r5, r8
-	push {r5, r6, r7}
-	sub sp, #4
-	ldr r2, _08011A1C @ =gMain
-	ldrh r0, [r2, #0x38]
-	movs r0, #0x84
-	lsls r0, r0, #2
-	strh r0, [r2, #0x38]
-	ldrh r0, [r2, #0x3a]
-	ldr r0, _08011A20 @ =0x00000808
-	strh r0, [r2, #0x3a]
-	ldr r1, _08011A24 @ =0x04000050
-	ldrh r0, [r2, #0x38]
-	strh r0, [r1]
-	adds r1, #2
-	ldrh r0, [r2, #0x3a]
-	strh r0, [r1]
-	ldr r3, _08011A28 @ =gTitlescreen
-	movs r0, #0xa
-	ldrsb r0, [r3, r0]
-	movs r1, #0xb8
-	muls r0, r1, r0
-	movs r4, #0xbe
-	lsls r4, r4, #2
-	adds r2, r2, r4
-	adds r0, r0, r2
-	mov sl, r0
-	movs r0, #0xc
-	ldrsb r0, [r3, r0]
-	muls r0, r1, r0
-	adds r0, r0, r2
-	mov sb, r0
-	movs r0, #0xe
-	ldrsb r0, [r3, r0]
-	muls r0, r1, r0
-	adds r0, r0, r2
-	mov r8, r0
-	movs r0, #0xb
-	ldrsb r0, [r3, r0]
-	mov r6, sl
-	strh r0, [r6]
-	movs r0, #0xd
-	ldrsb r0, [r3, r0]
-	mov r7, sb
-	strh r0, [r7]
-	movs r0, #0xf
-	ldrsb r0, [r3, r0]
-	mov r1, r8
-	strh r0, [r1]
-	ldr r4, _08011A2C @ =gUnknown_0202BE00
-	adds r0, r4, #0
-	movs r1, #7
-	bl LoadSpriteSets
-	ldrh r0, [r6]
-	cmp r0, #1
-	bne _08011A88
-	movs r0, #0x78
-	strh r0, [r6, #2]
-	movs r0, #0x66
-	strh r0, [r6, #4]
-	ldr r4, [r4, #0x18]
-	mov ip, r4
-	movs r2, #0
-	str r2, [sp]
-	ldrh r3, [r4]
-	cmp r2, r3
-	bge _08011A88
-	ldr r6, _08011A30 @ =gOamBuffer
-	mov r4, sl
-	adds r4, #8
-	mov r5, ip
-_080119FE:
-	ldrh r0, [r5, #8]
-	cmp r0, #1
-	bne _08011A34
-	ldrh r2, [r4]
-	lsls r2, r2, #3
-	adds r2, r2, r6
-	ldrb r1, [r2, #1]
-	movs r0, #0xd
-	rsbs r0, r0, #0
-	ands r0, r1
-	movs r1, #4
-	orrs r0, r1
-	strb r0, [r2, #1]
-	b _08011A44
-	.align 2, 0
-_08011A1C: .4byte gMain
-_08011A20: .4byte 0x00000808
-_08011A24: .4byte 0x04000050
-_08011A28: .4byte gTitlescreen
-_08011A2C: .4byte gUnknown_0202BE00
-_08011A30: .4byte gOamBuffer
-_08011A34:
-	ldrh r0, [r4]
-	lsls r0, r0, #3
-	adds r0, r0, r6
-	ldrb r2, [r0, #1]
-	movs r1, #0xd
-	rsbs r1, r1, #0
-	ands r1, r2
-	strb r1, [r0, #1]
-_08011A44:
-	ldrh r3, [r4]
-	lsls r3, r3, #3
-	adds r3, r3, r6
-	movs r7, #2
-	ldrsh r1, [r4, r7]
-	mov r2, sl
-	movs r7, #2
-	ldrsh r0, [r2, r7]
-	adds r1, r1, r0
-	ldr r2, _08011B5C @ =0x000001FF
-	adds r0, r2, #0
-	ands r1, r0
-	ldrh r2, [r3, #2]
-	ldr r0, _08011B60 @ =0xFFFFFE00
-	ands r0, r2
-	orrs r0, r1
-	strh r0, [r3, #2]
-	ldrh r1, [r4]
-	lsls r1, r1, #3
-	adds r1, r1, r6
-	mov r3, sl
-	ldrb r0, [r3, #4]
-	ldrb r7, [r4, #4]
-	adds r0, r0, r7
-	strb r0, [r1]
-	adds r4, #8
-	adds r5, #8
-	ldr r0, [sp]
-	adds r0, #1
-	str r0, [sp]
-	mov r1, ip
-	ldrh r1, [r1]
-	cmp r0, r1
-	blt _080119FE
-_08011A88:
-	mov r2, sb
-	ldrh r0, [r2]
-	cmp r0, #1
-	bne _08011AE4
-	ldr r2, _08011B64 @ =gUnknown_086A96AC
-	ldr r1, _08011B68 @ =gTitlescreen
-	movs r0, #0
-	ldrsb r0, [r1, r0]
-	lsls r0, r0, #2
-	adds r0, r0, r2
-	ldrh r0, [r0]
-	mov r3, sb
-	strh r0, [r3, #2]
-	movs r0, #0
-	ldrsb r0, [r1, r0]
-	lsls r0, r0, #2
-	adds r0, r0, r2
-	ldrh r0, [r0, #2]
-	strh r0, [r3, #4]
-	mov r5, sb
-	adds r5, #8
-	ldr r4, _08011B6C @ =gOamBuffer
-	ldrh r2, [r3, #8]
-	lsls r2, r2, #3
-	adds r2, r2, r4
-	movs r6, #2
-	ldrsh r1, [r5, r6]
-	movs r7, #2
-	ldrsh r0, [r3, r7]
-	adds r1, r1, r0
-	ldr r3, _08011B5C @ =0x000001FF
-	adds r0, r3, #0
-	ands r1, r0
-	ldrh r3, [r2, #2]
-	ldr r0, _08011B60 @ =0xFFFFFE00
-	ands r0, r3
-	orrs r0, r1
-	strh r0, [r2, #2]
-	mov r6, sb
-	ldrh r1, [r6, #8]
-	lsls r1, r1, #3
-	adds r1, r1, r4
-	ldrb r0, [r6, #4]
-	ldrb r5, [r5, #4]
-	adds r0, r0, r5
-	strb r0, [r1]
-_08011AE4:
-	mov r7, r8
-	ldrh r0, [r7]
-	cmp r0, #1
-	bne _08011B3C
-	ldr r2, _08011B70 @ =gUnknown_086A96C0
-	ldr r1, _08011B68 @ =gTitlescreen
-	movs r0, #0
-	ldrsb r0, [r1, r0]
-	lsls r0, r0, #2
-	adds r0, r0, r2
-	ldrh r0, [r0]
-	strh r0, [r7, #2]
-	movs r0, #0
-	ldrsb r0, [r1, r0]
-	lsls r0, r0, #2
-	adds r0, r0, r2
-	ldrh r0, [r0, #2]
-	strh r0, [r7, #4]
-	mov r5, r8
-	adds r5, #8
-	ldr r4, _08011B6C @ =gOamBuffer
-	ldrh r2, [r7, #8]
-	lsls r2, r2, #3
-	adds r2, r2, r4
-	movs r0, #2
-	ldrsh r1, [r5, r0]
-	movs r3, #2
-	ldrsh r0, [r7, r3]
-	adds r1, r1, r0
-	ldr r6, _08011B5C @ =0x000001FF
-	adds r0, r6, #0
-	ands r1, r0
-	ldrh r3, [r2, #2]
-	ldr r0, _08011B60 @ =0xFFFFFE00
-	ands r0, r3
-	orrs r0, r1
-	strh r0, [r2, #2]
-	ldrh r1, [r7, #8]
-	lsls r1, r1, #3
-	adds r1, r1, r4
-	ldrb r0, [r7, #4]
-	ldrb r5, [r5, #4]
-	adds r0, r0, r5
-	strb r0, [r1]
-_08011B3C:
-	movs r0, #0
-	mov r7, sl
-	strh r0, [r7]
-	mov r1, sb
-	strh r0, [r1]
-	mov r2, r8
-	strh r0, [r2]
-	add sp, #4
-	pop {r3, r4, r5}
-	mov r8, r3
-	mov sb, r4
-	mov sl, r5
-	pop {r4, r5, r6, r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08011B5C: .4byte 0x000001FF
-_08011B60: .4byte 0xFFFFFE00
-_08011B64: .4byte gUnknown_086A96AC
-_08011B68: .4byte gTitlescreen
-_08011B6C: .4byte gOamBuffer
-_08011B70: .4byte gUnknown_086A96C0
-
-	thumb_func_start sub_11B74
-sub_11B74: @ 0x08011B74
-	push {lr}
-	bl sub_52C64
-	bl sub_52B30
-	ldr r0, _08011B94 @ =gMain
-	movs r1, #0
-	str r1, [r0, #0x40]
-	adds r0, #0x40
-	ldr r1, _08011B98 @ =0x0E000544
-	movs r2, #4
-	bl sub_55654
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08011B94: .4byte gMain
-_08011B98: .4byte 0x0E000544
diff --git a/asm/unknown_lib.s b/asm/unknown_lib.s
deleted file mode 100755
index a96898d..0000000
--- a/asm/unknown_lib.s
+++ /dev/null
@@ -1,230 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/gba_constants.inc"
-
-	@ extern
-
-	.syntax unified
-
-	.text
-
-	thumb_func_start sub_554F0
-sub_554F0: @ 0x080554F0
-	push {r4, r5, lr}
-	adds r5, r0, #0
-	adds r4, r1, #0
-	adds r3, r2, #0
-	ldr r2, _08055528 @ =0x04000204
-	ldrh r0, [r2]
-	ldr r1, _0805552C @ =0x0000FFFC
-	ands r0, r1
-	movs r1, #3
-	orrs r0, r1
-	strh r0, [r2]
-	subs r3, #1
-	movs r0, #1
-	rsbs r0, r0, #0
-	cmp r3, r0
-	beq _08055520
-	adds r1, r0, #0
-_08055512:
-	ldrb r0, [r5]
-	strb r0, [r4]
-	adds r5, #1
-	adds r4, #1
-	subs r3, #1
-	cmp r3, r1
-	bne _08055512
-_08055520:
-	pop {r4, r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08055528: .4byte 0x04000204
-_0805552C: .4byte 0x0000FFFC
-
-	thumb_func_start sub_55530
-sub_55530: @ 0x08055530
-	push {r4, r5, lr}
-	adds r5, r0, #0
-	adds r4, r1, #0
-	adds r3, r2, #0
-	ldr r2, _08055568 @ =0x04000204
-	ldrh r0, [r2]
-	ldr r1, _0805556C @ =0x0000FFFC
-	ands r0, r1
-	movs r1, #3
-	orrs r0, r1
-	strh r0, [r2]
-	subs r3, #1
-	movs r0, #1
-	rsbs r0, r0, #0
-	cmp r3, r0
-	beq _08055560
-	adds r1, r0, #0
-_08055552:
-	ldrb r0, [r5]
-	strb r0, [r4]
-	adds r5, #1
-	adds r4, #1
-	subs r3, #1
-	cmp r3, r1
-	bne _08055552
-_08055560:
-	pop {r4, r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08055568: .4byte 0x04000204
-_0805556C: .4byte 0x0000FFFC
-
-	thumb_func_start sub_55570
-sub_55570: @ 0x08055570
-	push {r4, r5, lr}
-	adds r5, r0, #0
-	adds r4, r1, #0
-	adds r3, r2, #0
-	ldr r2, _080555A4 @ =0x04000204
-	ldrh r0, [r2]
-	ldr r1, _080555A8 @ =0x0000FFFC
-	ands r0, r1
-	movs r1, #3
-	orrs r0, r1
-	strh r0, [r2]
-	subs r3, #1
-	movs r0, #1
-	rsbs r0, r0, #0
-	cmp r3, r0
-	beq _080555B2
-	adds r2, r0, #0
-_08055592:
-	ldrb r1, [r4]
-	ldrb r0, [r5]
-	adds r5, #1
-	adds r4, #1
-	cmp r1, r0
-	beq _080555AC
-	subs r0, r4, #1
-	b _080555B4
-	.align 2, 0
-_080555A4: .4byte 0x04000204
-_080555A8: .4byte 0x0000FFFC
-_080555AC:
-	subs r3, #1
-	cmp r3, r2
-	bne _08055592
-_080555B2:
-	movs r0, #0
-_080555B4:
-	pop {r4, r5}
-	pop {r1}
-	bx r1
-
-	thumb_func_start sub_555BC
-sub_555BC: @ 0x080555BC
-	ldr r2, _080555D0 @ =sub_554F0
-	movs r0, #1
-	eors r2, r0
-	ldr r3, _080555D4 @ =gUnknown_02002FD8
-	ldr r0, _080555D8 @ =sub_55530
-	ldr r1, _080555D0 @ =sub_554F0
-	subs r0, r0, r1
-	lsls r0, r0, #0xf
-	b _080555E8
-	.align 2, 0
-_080555D0: .4byte sub_554F0
-_080555D4: .4byte gUnknown_02002FD8
-_080555D8: .4byte sub_55530
-_080555DC:
-	ldrh r0, [r2]
-	strh r0, [r3]
-	adds r2, #2
-	adds r3, #2
-	subs r0, r1, #1
-	lsls r0, r0, #0x10
-_080555E8:
-	lsrs r1, r0, #0x10
-	cmp r1, #0
-	bne _080555DC
-	ldr r1, _08055608 @ =gUnknown_02032FF0
-	ldr r0, _0805560C @ =gUnknown_02002FD9
-	str r0, [r1]
-	ldr r2, _08055610 @ =sub_55570
-	movs r0, #1
-	eors r2, r0
-	ldr r3, _08055614 @ =gUnknown_02002F38
-	ldr r0, _08055618 @ =sub_555BC
-	ldr r1, _08055610 @ =sub_55570
-	subs r0, r0, r1
-	lsls r0, r0, #0xf
-	b _08055628
-	.align 2, 0
-_08055608: .4byte gUnknown_02032FF0
-_0805560C: .4byte gUnknown_02002FD9
-_08055610: .4byte sub_55570
-_08055614: .4byte gUnknown_02002F38
-_08055618: .4byte sub_555BC
-_0805561C:
-	ldrh r0, [r2]
-	strh r0, [r3]
-	adds r2, #2
-	adds r3, #2
-	subs r0, r1, #1
-	lsls r0, r0, #0x10
-_08055628:
-	lsrs r1, r0, #0x10
-	cmp r1, #0
-	bne _0805561C
-	ldr r1, _08055644 @ =gUnknown_02032FF4
-	ldr r0, _08055648 @ =gUnknown_02002F39
-	str r0, [r1]
-	ldr r2, _0805564C @ =0x04000204
-	ldrh r0, [r2]
-	ldr r1, _08055650 @ =0x0000FFFC
-	ands r0, r1
-	movs r1, #3
-	orrs r0, r1
-	strh r0, [r2]
-	bx lr
-	.align 2, 0
-_08055644: .4byte gUnknown_02032FF4
-_08055648: .4byte gUnknown_02002F39
-_0805564C: .4byte 0x04000204
-_08055650: .4byte 0x0000FFFC
-
-	thumb_func_start sub_55654
-sub_55654: @ 0x08055654
-	push {r4, r5, r6, r7, lr}
-	adds r6, r0, #0
-	adds r5, r1, #0
-	adds r4, r2, #0
-	movs r7, #0
-	b _08055666
-_08055660:
-	adds r0, r7, #1
-	lsls r0, r0, #0x18
-	lsrs r7, r0, #0x18
-_08055666:
-	cmp r7, #2
-	bhi _08055688
-	adds r0, r6, #0
-	adds r1, r5, #0
-	adds r2, r4, #0
-	bl sub_55530
-	ldr r0, _08055690 @ =gUnknown_02032FF4
-	ldr r3, [r0]
-	adds r0, r6, #0
-	adds r1, r5, #0
-	adds r2, r4, #0
-	bl _call_via_r3
-	adds r3, r0, #0
-	cmp r3, #0
-	bne _08055660
-_08055688:
-	adds r0, r3, #0
-	pop {r4, r5, r6, r7}
-	pop {r1}
-	bx r1
-	.align 2, 0
-_08055690: .4byte gUnknown_02032FF4
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/asm/unknown_lib_2.s b/asm/unknown_lib_2.s
deleted file mode 100755
index 8d72a45..0000000
--- a/asm/unknown_lib_2.s
+++ /dev/null
@@ -1,46 +0,0 @@
-    .include "asm/macros.inc"
-
-	.syntax unified
-
-	.text
-
-	thumb_func_start sub_55A24
-sub_55A24: @ 0x08055A24
-	push {r4, r5, lr}
-	adds r1, r0, #0
-	adds r5, r1, #0
-	movs r0, #3
-	ands r0, r1
-	cmp r0, #0
-	bne _08055A5C
-	adds r2, r1, #0
-	ldr r1, [r2]
-	ldr r4, _08055A40 @ =0xFEFEFEFF
-	adds r0, r1, r4
-	bics r0, r1
-	ldr r3, _08055A44 @ =0x80808080
-	b _08055A50
-	.align 2, 0
-_08055A40: .4byte 0xFEFEFEFF
-_08055A44: .4byte 0x80808080
-_08055A48:
-	adds r2, #4
-	ldr r1, [r2]
-	adds r0, r1, r4
-	bics r0, r1
-_08055A50:
-	ands r0, r3
-	cmp r0, #0
-	beq _08055A48
-	adds r1, r2, #0
-	b _08055A5C
-_08055A5A:
-	adds r1, #1
-_08055A5C:
-	ldrb r0, [r1]
-	cmp r0, #0
-	bne _08055A5A
-	subs r0, r1, r5
-	pop {r4, r5, pc}
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/include/agb_sram.h b/include/agb_sram.h
new file mode 100644
index 0000000..c609417
--- /dev/null
+++ b/include/agb_sram.h
@@ -0,0 +1,10 @@
+#ifndef GUARD_AGB_SRAM_H
+#define GUARD_AGB_SRAM_H
+
+void SetSramFastFunc(void);
+void WriteSramFast(const u8 *src, u8 *dest, u32 size);
+extern void (*ReadSramFast)(const u8 *src, u8 *dest, u32 size);
+extern u32 (*VerifySramFast)(const u8 *src, u8 *dest, u32 size);
+u32 WriteAndVerifySramFast(const u8 *src, u8 *dest, u32 size);
+
+#endif  // GUARD_AGB_SRAM_H
\ No newline at end of file
diff --git a/include/functions.h b/include/functions.h
index 89b93dc..5846d0e 100644
--- a/include/functions.h
+++ b/include/functions.h
@@ -777,10 +777,10 @@ extern void sub_1090C(void);
 //extern ? sub_52940();
 extern void sub_52A18(void);
 //extern ? sub_52A68();
-//extern ? sub_52B30();
+extern void sub_52B30(void);
 //extern ? sub_52BB0();
 extern void sub_52C44(void);
-//extern ? sub_52C64();
+extern void sub_52C64(void);
 
 // asm/rom_9BC.s
 
@@ -830,16 +830,4 @@ extern void sub_1175C(void);
 extern void sub_11968(void);
 extern void sub_11B74(void);
 
-// asm/unknown_lib_2.s
-
-extern int sub_55A24(u8*); // Rumble Pak?
-
-// asm/unknown_lib.s
-
-//extern ? sub_554F0();
-//extern ? sub_55530();
-//extern ? sub_55570();
-//extern ? sub_555BC();
-//extern ? sub_55654();
-
 #endif  // GUARD_FUNCTIONS_H
\ No newline at end of file
diff --git a/include/main.h b/include/main.h
index 4b97e5e..02f0a5f 100755
--- a/include/main.h
+++ b/include/main.h
@@ -38,6 +38,7 @@ struct Main
     /*0x38*/ volatile u16 blendControl;
     /*0x3A*/ volatile u16 blendAlpha;
     /*0x3C*/ volatile u16 blendBrightness;
+             // may be a sub-struct. possibly save data?
     /*0x40*/ int unk40;
     /*0x44*/ u8 filler44[0x4];
     /*0x48*/ int rngValue;
diff --git a/include/titlescreen.h b/include/titlescreen.h
index d1dd857..6cd6965 100755
--- a/include/titlescreen.h
+++ b/include/titlescreen.h
@@ -10,12 +10,12 @@ struct TitlescreenStruct
     /*0x07*/ u8 unk7;
     /*0x08*/ s8 unk8;
     /*0x09*/ s8 unk9;
-    /*0x0A*/ u8 unkA;
-    /*0x0B*/ u8 unkB;
-    /*0x0C*/ u8 unkC;
-    /*0x0D*/ u8 unkD;
-    /*0x0E*/ u8 unkE;
-    /*0x0F*/ u8 unkF;
+    /*0x0A*/ s8 unkA;
+    /*0x0B*/ s8 unkB;
+    /*0x0C*/ s8 unkC;
+    /*0x0D*/ s8 unkD;
+    /*0x0E*/ s8 unkE;
+    /*0x0F*/ s8 unkF;
     /*0x10*/ s8 unk10;
     /*0x11*/ s8 unk11;
     /*0x12*/ s16 idleFadeoutCounter;
diff --git a/include/types.h b/include/types.h
index af7a749..e43b6dc 100644
--- a/include/types.h
+++ b/include/types.h
@@ -34,4 +34,10 @@ struct SpriteGroup
 };
 // size: 0xB8
 
+struct Coord16
+{
+    u16 x;
+    u16 y;
+};
+
 #endif  // GUARD_TYPES_H
diff --git a/include/variables.h b/include/variables.h
index 6a74cb7..d8efc57 100644
--- a/include/variables.h
+++ b/include/variables.h
@@ -163,5 +163,9 @@ extern const u16 gTitlescreenSprites_Pals[];
 //extern ? gMonPortraitsGroup11_Pals;
 //extern ? gMonPortraitsGroup12_Pals;
 //extern ? gMonPortraitsGroup13_Pals;
+extern struct Coord16 gUnknown_086A9684[];
+extern struct Coord16 gUnknown_086A9694[];
+extern struct Coord16 gUnknown_086A96AC[];
+extern struct Coord16 gUnknown_086A96C0[];
 
 #endif  // GUARD_VARIABLES_H
\ No newline at end of file
diff --git a/ld_script.txt b/ld_script.txt
index 15cf11d..2f53a9e 100755
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -42,7 +42,6 @@ SECTIONS
         asm/high_scores.o(.text);
         asm/rom_1068C.o(.text);
         src/titlescreen.o(.text);
-        asm/titlescreen.o(.text);
         asm/rom_11B9C.o(.text);
         src/rom_3219C.o(.text);
         asm/rom_3219C.o(.text);
@@ -51,7 +50,7 @@ SECTIONS
         asm/m4a_1.o(.text);
         src/m4a.o(.text);
         asm/libagbsyscall.o(.text);
-        asm/unknown_lib.o(.text);
+        src/agb_sram.o(.text);
         *libgcc.a:_call_via_rX.o(.text);
         *libgcc.a:_divsi3.o(.text);
         *libgcc.a:_dvmd_tls.o(.text);
@@ -60,7 +59,7 @@ SECTIONS
         *libgcc.a:_umodsi3.o(.text);
         *libc.a:memcpy.o(.text);
         *libc.a:memset.o(.text);
-        asm/unknown_lib_2.o(.text);
+        *libc.a:strlen.o(.text);
     }=0
 
     .rodata :
diff --git a/src/agb_sram.c b/src/agb_sram.c
new file mode 100644
index 0000000..b33003c
--- /dev/null
+++ b/src/agb_sram.c
@@ -0,0 +1,90 @@
+#include "global.h"
+#include "agb_sram.h"
+
+// this should be in .bss
+extern /*static*/ u16 verifySramFast_Work[80]; // buffer to hold code of VerifySramFast_Core
+extern /*static*/ u16 readSramFast_Work[64];  // buffer to hold code of ReadSramFast_Core
+
+u32 (*VerifySramFast)(const u8 *src, u8 *dest, u32 size);  // pointer to verifySramFast_Work
+void (*ReadSramFast)(const u8 *src, u8 *dest, u32 size);  // pointer to readSramFast_Work
+
+void ReadSramFast_Core(const u8 *src, u8 *dest, u32 size)
+{
+    REG_WAITCNT = (REG_WAITCNT & ~3) | 3;
+    while (--size != -1)
+        *dest++ = *src++;
+}
+
+void WriteSramFast(const u8 *src, u8 *dest, u32 size)
+{
+    REG_WAITCNT = (REG_WAITCNT & ~3) | 3;
+    while (--size != -1)
+        *dest++ = *src++;
+}
+
+u32 VerifySramFast_Core(const u8 *src, u8 *dest, u32 size)
+{
+    REG_WAITCNT = (REG_WAITCNT & ~3) | 3;
+    while (--size != -1)
+    {
+        if (*dest++ != *src++)
+            return (u32)(dest - 1);
+    }
+    return 0;
+}
+
+void SetSramFastFunc(void)
+{
+    u16 *src;
+    u16 *dest;
+    u16 size;
+
+    src = (u16 *)ReadSramFast_Core;
+    // clear the least significant bit so that we get the actual start address of the function
+    src = (u16 *)((uintptr_t)src ^ 1);  // NOTE: In Fire Emblem 8, this is '& ~1' instead of '^ 1'.
+    dest = readSramFast_Work;
+    // get the size of the function by subtracting the address of the next function
+    size = ((uintptr_t)WriteSramFast - (uintptr_t)ReadSramFast_Core) / 2;
+    // copy the function into the WRAM buffer
+    while (size != 0)
+    {
+        *dest++ = *src++;
+        size--;
+    }
+    // add 1 to the address of the buffer so that we stay in THUMB mode when bx-ing to the address
+    ReadSramFast = (void *)((uintptr_t)readSramFast_Work + 1);
+
+    src = (u16 *)VerifySramFast_Core;
+    // clear the least significant bit so that we get the actual start address of the function
+    src = (u16 *)((uintptr_t)src ^ 1);  // NOTE: In Fire Emblem 8, this is '& ~1' instead of '^ 1'.
+    dest = verifySramFast_Work;
+    // get the size of the function by subtracting the address of the next function
+    size = ((uintptr_t)SetSramFastFunc - (uintptr_t)VerifySramFast_Core) / 2;
+    // copy the function into the WRAM buffer
+    while (size != 0)
+    {
+        *dest++ = *src++;
+        size--;
+    }
+    // add 1 to the address of the buffer so that we stay in THUMB mode when bx-ing to the address
+    VerifySramFast = (void *)((uintptr_t)verifySramFast_Work + 1);
+
+    REG_WAITCNT = (REG_WAITCNT & ~3) | 3;
+}
+
+u32 WriteAndVerifySramFast(const u8 *src, u8 *dest, u32 size)
+{
+    u8 i;
+    u32 errorAddr;
+
+    // try writing and verifying the data 3 times
+    for (i = 0; i < 3; i++)
+    {
+        WriteSramFast(src, dest, size);
+        errorAddr = VerifySramFast(src, dest, size);
+        if (errorAddr == 0)
+            break;
+    }
+
+    return errorAddr;
+}
diff --git a/src/titlescreen.c b/src/titlescreen.c
index b013c2f..6a2bcac 100755
--- a/src/titlescreen.c
+++ b/src/titlescreen.c
@@ -1,11 +1,12 @@
 #include "global.h"
-#include "titlescreen.h"
+#include "agb_sram.h"
 #include "m4a.h"
+#include "titlescreen.h"
 #include "main.h"
 
 static void sub_114FC(void);
 static void sub_1157C(void);
-/*static*/ extern void sub_11640(void);
+static void sub_11640(void);
 
 // If the user doesn't press any buttons at the title screen,
 // it will transition to a demo gameplay experience.
@@ -656,38 +657,201 @@ static void sub_1157C(void)
     }
 }
 
-// static void sub_11640(void)
-// {
-//     int i;
-//     const struct SpriteSet *spriteSet;
-//     struct SpriteGroup *group1 = &gTitlescreen.unk8[gUnknown_0200B3B8];
-//     struct SpriteGroup *group2 = &gTitlescreen.unk10[gUnknown_0200B3B8];
-//     group1->available = gTitlescreen.unk9;
-//     group2->available = gTitlescreen.unk11;
-//     LoadSpriteSets(gUnknown_086A96E4, 5, gUnknown_0200B3B8);
-//     if (group1->available == 1)
-//     {
-//         group1->baseX = 120;
-//         group1->baseY = 102;
-//         spriteSet = gUnknown_086A96E4[gTitlescreen.unk8];
-//         for (i = 0; i < spriteSet->count; i++)
-//         {
-//             gOamBuffer[group1->oam[i].oamId].x = group1->oam[i].xOffset + group1->baseX;
-//             gOamBuffer[group1->oam[i].oamId].y = group1->oam[i].yOffset + group1->baseY;
-//         }
-//     }
-
-//     if (group2->available == 1)
-//     {
-//         group2->baseX = 120;
-//         group2->baseY = 80;
-//         for (i = 0; i < 2; i++)
-//         {
-//             gOamBuffer[group2->oam[i].oamId].x = group2->oam[i].xOffset + group2->baseX;
-//             gOamBuffer[group2->oam[i].oamId].y = group2->oam[i].yOffset + group2->baseY;
-//         }
-//     }
-
-//     group1->available = 0;
-//     group2->available = 0;
-// }
+static void sub_11640(void)
+{
+    int i;
+    const struct SpriteSet *spriteSet;
+    struct SpriteGroup *group1 = &gTitlescreen.unk8[gUnknown_0200B3B8];
+    struct SpriteGroup *group2 = &gTitlescreen.unk10[gUnknown_0200B3B8];
+
+    group1->available = gTitlescreen.unk9;
+    group2->available = gTitlescreen.unk11;
+
+    LoadSpriteSets(gUnknown_086A96E4, 5, gUnknown_0200B3B8);
+
+    if (group1->available == 1)
+    {
+        group1->baseX = 120;
+        group1->baseY = 102;
+        spriteSet = gUnknown_086A96E4[gTitlescreen.unk8];
+        for (i = 0; i < spriteSet->count; i++)
+        {
+            gOamBuffer[group1->oam[i].oamId].x = group1->oam[i].xOffset + group1->baseX;
+            gOamBuffer[group1->oam[i].oamId].y = group1->oam[i].yOffset + group1->baseY;
+
+            asm("");  // needed to match
+        }
+    }
+
+    if (group2->available == 1)
+    {
+        group2->baseX = 120;
+        group2->baseY = 80;
+        for (i = 0; i < 2; i++)
+        {
+            gOamBuffer[group2->oam[i].oamId].x = group2->oam[i].xOffset + group2->baseX;
+            gOamBuffer[group2->oam[i].oamId].y = group2->oam[i].yOffset + group2->baseY;
+
+            asm("");  // needed to match
+        }
+    }
+
+    group1->available = 0;
+    group2->available = 0;
+}
+
+struct UnknownStruct1
+{
+    u16 count;
+    u8 filler2[6];
+};
+
+void sub_1175C(void)
+{
+    struct SpriteGroup *r10;
+    struct SpriteGroup *r9;
+    struct SpriteGroup *r8;
+    const struct UnknownStruct1 *r12;
+    int sp0;
+
+    gMain.blendControl = 0x210;
+    gMain.blendAlpha = 0x808;
+    REG_BLDCNT = gMain.blendControl;
+    REG_BLDALPHA = gMain.blendAlpha;
+
+    r10 = &gMain.spriteGroups[gTitlescreen.unkA];
+    r9 = &gMain.spriteGroups[gTitlescreen.unkC];
+    r8 = &gMain.spriteGroups[gTitlescreen.unkE];
+
+    r10->available = gTitlescreen.unkB;
+    r9->available = gTitlescreen.unkD;
+    r8->available = gTitlescreen.unkF;
+
+    LoadSpriteSets((const struct SpriteSet *const *)gUnknown_0201C190, 7, gMain.spriteGroups);
+
+    if (r10->available == 1)
+    {
+        r10->baseX = 0x78;
+        r10->baseY = 0x66;
+        r12 = (const struct UnknownStruct1 *)gUnknown_0201C190[6];
+        for (sp0 = 0; sp0 < r12->count; sp0++)
+        {
+            struct OamDataSimple *r4 = &r10->oam[sp0];
+            if (r12[sp0 + 1].count == 1)  // dunno. wtf?
+                gOamBuffer[r4->oamId].objMode = 1;
+            else
+                gOamBuffer[r4->oamId].objMode = 0;
+            gOamBuffer[r4->oamId].x = r4->xOffset + r10->baseX;
+            gOamBuffer[r4->oamId].y = r4->yOffset + r10->baseY;
+        }
+    }
+
+    if (r9->available == 1)
+    {
+        struct OamDataSimple *r5;
+
+        r9->baseX = gUnknown_086A9684[gTitlescreen.menuCursorIndex].x;
+        r9->baseY = gUnknown_086A9684[gTitlescreen.menuCursorIndex].y;
+
+        r5 = &r9->oam[0];
+
+        gOamBuffer[r5->oamId].x = r5->xOffset + r9->baseX;
+        gOamBuffer[r5->oamId].y = r5->yOffset + r9->baseY;
+    }
+
+    if (r8->available == 1)
+    {
+        struct OamDataSimple *r5;
+
+        r8->baseX = gUnknown_086A9694[gTitlescreen.menuCursorIndex].x;
+        r8->baseY = gUnknown_086A9694[gTitlescreen.menuCursorIndex].y;
+
+        r5 = &r8->oam[0];
+
+        gOamBuffer[r5->oamId].x = r5->xOffset + r8->baseX;
+        gOamBuffer[r5->oamId].y = r5->yOffset + r8->baseY;
+    }
+
+    r10->available = 0;
+    r9->available = 0;
+    r8->available = 0;
+}
+
+void sub_11968(void)
+{
+    struct SpriteGroup *r10;
+    struct SpriteGroup *r9;
+    struct SpriteGroup *r8;
+    const struct UnknownStruct1 *r12;
+    int sp0;
+
+    gMain.blendControl = 0x210;
+    gMain.blendAlpha = 0x808;
+    REG_BLDCNT = gMain.blendControl;
+    REG_BLDALPHA = gMain.blendAlpha;
+
+    r10 = &gMain.spriteGroups[gTitlescreen.unkA];
+    r9 = &gMain.spriteGroups[gTitlescreen.unkC];
+    r8 = &gMain.spriteGroups[gTitlescreen.unkE];
+
+    r10->available = gTitlescreen.unkB;
+    r9->available = gTitlescreen.unkD;
+    r8->available = gTitlescreen.unkF;
+
+    LoadSpriteSets((const struct SpriteSet *const *)gUnknown_0202BE00, 7, gMain.spriteGroups);
+
+    if (r10->available == 1)
+    {
+        r10->baseX = 0x78;
+        r10->baseY = 0x66;
+        r12 = (const struct UnknownStruct1 *)gUnknown_0202BE00[6];
+        for (sp0 = 0; sp0 < r12->count; sp0++)
+        {
+            struct OamDataSimple *r4 = &r10->oam[sp0];
+            if (r12[sp0 + 1].count == 1)  // dunno. wtf?
+                gOamBuffer[r4->oamId].objMode = 1;
+            else
+                gOamBuffer[r4->oamId].objMode = 0;
+            gOamBuffer[r4->oamId].x = r4->xOffset + r10->baseX;
+            gOamBuffer[r4->oamId].y = r4->yOffset + r10->baseY;
+        }
+    }
+
+    if (r9->available == 1)
+    {
+        struct OamDataSimple *r5;
+
+        r9->baseX = gUnknown_086A96AC[gTitlescreen.menuCursorIndex].x;
+        r9->baseY = gUnknown_086A96AC[gTitlescreen.menuCursorIndex].y;
+
+        r5 = &r9->oam[0];
+
+        gOamBuffer[r5->oamId].x = r5->xOffset + r9->baseX;
+        gOamBuffer[r5->oamId].y = r5->yOffset + r9->baseY;
+    }
+
+    if (r8->available == 1)
+    {
+        struct OamDataSimple *r5;
+
+        r8->baseX = gUnknown_086A96C0[gTitlescreen.menuCursorIndex].x;
+        r8->baseY = gUnknown_086A96C0[gTitlescreen.menuCursorIndex].y;
+
+        r5 = &r8->oam[0];
+
+        gOamBuffer[r5->oamId].x = r5->xOffset + r8->baseX;
+        gOamBuffer[r5->oamId].y = r5->yOffset + r8->baseY;
+    }
+
+    r10->available = 0;
+    r9->available = 0;
+    r8->available = 0;
+}
+
+void sub_11B74(void)
+{
+    sub_52C64();
+    sub_52B30();
+    gMain.unk40 = 0;
+    WriteAndVerifySramFast((const u8 *)&gMain.unk40, (void *)0x0E000544, 4);
+}
diff --git a/src/util.c b/src/util.c
index f0d0b05..d0f3f42 100755
--- a/src/util.c
+++ b/src/util.c
@@ -186,7 +186,7 @@ void sub_578(void)
 void sub_678(u8 *arg0, s16 arg1, s16 arg2)
 {
     // Rumble Pak related?
-    s16 var0 = sub_55A24(arg0) - 1;
+    s16 var0 = strlen(arg0) - 1;
     u16 *dest = &gUnknown_03005C00[arg1 * 32 + arg2];
     do
     {
diff --git a/sym_common.txt b/sym_common.txt
index 93b48cf..433c13b 100755
--- a/sym_common.txt
+++ b/sym_common.txt
@@ -2,8 +2,8 @@
 
 gUnknown_02032FB0: @ 0x02032FB0
 	.space 0x40
-gUnknown_02032FF0: @ 0x02032FF0
+ReadSramFast: @ 0x02032FF0
 	.space 0x4
-gUnknown_02032FF4: @ 0x02032FF4
+VerifySramFast: @ 0x02032FF4
 	.space 0xF7C08C
 gUnknown_02FAF080: @ 0x02FAF080
diff --git a/sym_ewram.txt b/sym_ewram.txt
index 88ea13f..22057c0 100644
--- a/sym_ewram.txt
+++ b/sym_ewram.txt
@@ -84,14 +84,10 @@ gUnknown_0200293A: @ 0x0200293A
 	.space 0x1E
 gUnknown_02002958: @ 0x2002958
 	.space 0x5E0
-gUnknown_02002F38: @ 0x02002F38
-	.space 0x1
-gUnknown_02002F39: @ 0x02002F39
-	.space 0x9F
-gUnknown_02002FD8: @ 0x02002FD8
-	.space 0x1
-gUnknown_02002FD9: @ 0x02002FD9
-	.space 0x87
+verifySramFast_Work: @ 0x02002F38
+	.space 0xA0
+readSramFast_Work: @ 0x02002FD8
+	.space 0x88
 gIntrTable: @ 0x2003060
 	.space 0x40
 gUnknown_020030A0: @ 0x020030A0