25 files changed, 3665 insertions, 3564 deletions

diff --git a/arm9/Makefile b/arm9/Makefile
index aa41512d..d96f5ba1 100644
--- a/arm9/Makefile
+++ b/arm9/Makefile
@@ -91,15 +91,16 @@ OBJCOPY := $(CROSS)objcopy
 
 # ./tools/mwccarm/2.0/base/mwasmarm.exe -proc arm5te asm/arm9_thumb.s -o arm9.o
 ASFLAGS = -proc arm5te -i ..
-CFLAGS = -O4,p -proc arm946e -fp soft -lang c99 -Cpp_exceptions off -ir ../include -ir ../include-mw -ir lib/include -interworking
+CFLAGS = -O4,p -proc arm946e -fp soft -lang c99 -Cpp_exceptions off -ir ../include -ir ../include-mw -ir lib/include -interworking -DFS_IMPLEMENT
 LDFLAGS = -map -nodead -w off -proc v5te -interworking -map -symtab -m _start
 
 ####################### Other Tools #########################
 
 # DS TOOLS
 SHA1SUM = sha1sum
-JSONPROC = $(TOOLS_DIR)/jsonproc/jsonproc
-GFX = $(TOOLS_DIR)/nitrogfx/nitrogfx
+JSONPROC = $(TOOLS_DIR)/jsonproc/jsonproc$(EXE)
+GFX = $(TOOLS_DIR)/nitrogfx/nitrogfx$(EXE)
+SCANINC = $(TOOLS_DIR)/scaninc/scaninc$(EXE)
 MWASMARM_PATCHER = $(TOOLS_DIR)/mwasmarm_patcher/mwasmarm_patcher$(EXE) -q
 
 TOOLDIRS = $(filter-out $(TOOLS_DIR)/mwccarm $(TOOLS_DIR)/bin,$(wildcard $(TOOLS_DIR)/*))
@@ -150,12 +151,13 @@ ALL_DIRS := $(BUILD_DIR) $(addprefix $(BUILD_DIR)/,$(SRC_DIRS) $(ASM_DIRS))
 
 # TODO: Move out to lib/Makefile
 build/lib/src/%.o: MWCCVERSION = 1.2/sp2p3
+build/lib/src/%.o: CFLAGS += -enum int
 build/src/FUN_020910A4.o: MWCCVERSION = 1.2/sp2p3
 
 ####################### Everything Else ######################
 
 ifeq (,$(NODEP))
-$(BUILD_DIR)/%.o: dep = $(shell grep -E '(#\s*|\.)(include|incbin)\s*"(\S+?)"' $*.[cs] | cut -d'"' -f2 | sort -u)
+$(BUILD_DIR)/%.o: dep = $(shell $(SCANINC) -I ../include -I ../include-mw -I lib/include $*.[cs])
 else
 $(BUILD_DIR)/%.o: dep :=
 endif
diff --git a/arm9/arm9.lcf b/arm9/arm9.lcf
index 8de69f44..7a4a43fb 100644
--- a/arm9/arm9.lcf
+++ b/arm9/arm9.lcf
@@ -110,6 +110,8 @@ SECTIONS {
 		unk_02000E0C.o (.text)
 		string_util.o (.text)
 		unk_020023C0.o (.text)
+		poke_overlay.o (.text)
+		unk_020061E8.o (.text)
 		filesystem.o (.text)
 		unk_02006864.o (.text)
 		script.o (.text)
@@ -188,7 +190,12 @@ SECTIONS {
 		SND_bank.o (.text)
 		PXI_init.o (.text)
 		PXI_fifo.o (.text)
-		libfs.o (.text)
+		FS_command.o (.text)
+		FS_command_default.o (.text)
+		FS_archive.o (.text)
+		FS_file.o (.text)
+		FS_rom.o (.text)
+		FS_overlay.o (.text)
 		libdgt.o (.text)
 		libcp.o (.text)
 		libspi.o (.text)
diff --git a/arm9/asm/FS_archive.s b/arm9/asm/FS_archive.s
new file mode 100644
index 00000000..51a3e121
--- /dev/null
+++ b/arm9/asm/FS_archive.s
@@ -0,0 +1,897 @@
+	.include "asm/macros.inc"
+	.include "global.inc"
+	.section .text
+
+	arm_func_start FS_NotifyArchiveAsyncEnd
+FS_NotifyArchiveAsyncEnd: ; 0x020D0B40
+	stmdb sp!, {r4-r6,lr}
+	mov r4, r0
+	ldr r0, [r4, #0x1c]
+	mov r6, r1
+	ands r0, r0, #0x100
+	beq _020D0B8C
+	ldr r2, [r4, #0x1c]
+	ldr r0, [r4, #0x24]
+	bic r2, r2, #0x100
+	str r2, [r4, #0x1c]
+	bl FSi_ReleaseCommand
+	mov r0, r4
+	bl FSi_NextCommand
+_020D0B74:
+	cmp r0, #0x0
+	ldmeqia sp!, {r4-r6,lr}
+	bxeq lr
+	bl FSi_ExecuteAsyncCommand
+	ldmia sp!, {r4-r6,lr}
+	bx lr
+_020D0B8C:
+	ldr r5, [r4, #0x24]
+	bl OS_DisableInterrupts
+	str r6, [r5, #0x14]
+	ldr r1, [r4, #0x1c]
+	mov r5, r0
+	bic r1, r1, #0x200
+	add r0, r4, #0xc
+	str r1, [r4, #0x1c]
+	bl OS_WakeupThread
+	mov r0, r5
+	bl OS_RestoreInterrupts
+	ldmia sp!, {r4-r6,lr}
+	bx lr
+
+	arm_func_start FS_SetArchiveProc
+FS_SetArchiveProc: ; 0x020D0BC0
+	cmp r2, #0x0
+	moveq r1, #0x0
+	beq _020D0BD4
+	cmp r1, #0x0
+	moveq r2, #0x0
+_020D0BD4:
+	str r1, [r0, #0x54]
+	str r2, [r0, #0x58]
+	bx lr
+
+	arm_func_start FS_ResumeArchive
+FS_ResumeArchive:
+	stmdb sp!, {r4-r7,lr}
+	sub sp, sp, #0x4
+	mov r4, r0
+	mov r6, #0x0
+	bl OS_DisableInterrupts
+	ldr r1, [r4, #0x1c]
+	mov r5, r0
+	ands r0, r1, #0x8
+	movne r0, #0x1
+	moveq r0, r6
+	cmp r0, #0x0
+	moveq r7, #0x1
+	movne r7, #0x0
+	cmp r7, #0x0
+	bne _020D0C34
+	ldr r1, [r4, #0x1c]
+	mov r0, r4
+	bic r1, r1, #0x8
+	str r1, [r4, #0x1c]
+	bl FSi_NextCommand
+	mov r6, r0
+_020D0C34:
+	mov r0, r5
+	bl OS_RestoreInterrupts
+_020D0C3C:
+	cmp r6, #0x0
+	beq _020D0C4C
+	mov r0, r6
+	bl FSi_ExecuteAsyncCommand
+_020D0C4C:
+	mov r0, r7
+	add sp, sp, #0x4
+	ldmia sp!, {r4-r7, lr}
+	bx lr
+
+	arm_func_start FS_SuspendArchive
+FS_SuspendArchive: ; 0x020D0C5C
+	stmdb sp!, {r4-r7,lr}
+	sub sp, sp, #0x4
+	mov r6, r0
+	bl OS_DisableInterrupts
+	ldr r1, [r6, #0x1c]
+	mov r4, r0
+	ands r0, r1, #0x8
+	movne r0, #0x1
+	moveq r0, #0x0
+	cmp r0, #0x0
+	moveq r5, #0x1
+	movne r5, #0x0
+	cmp r5, #0x0
+	beq _020D0CD4
+	ldr r0, [r6, #0x1c]
+	ands r0, r0, #0x10
+	beq _020D0CC8
+	ldr r0, [r6, #0x1c]
+	orr r0, r0, #0x40
+	str r0, [r6, #0x1c]
+	add r7, r6, #0x14
+_020D0CB0:
+	mov r0, r7
+	bl OS_SleepThread
+	ldr r0, [r6, #0x1c]
+	ands r0, r0, #0x40
+	bne _020D0CB0
+	b _020D0CD4
+_020D0CC8:
+	ldr r0, [r6, #0x1c]
+	orr r0, r0, #0x8
+	str r0, [r6, #0x1c]
+_020D0CD4:
+	mov r0, r4
+	bl OS_RestoreInterrupts
+	mov r0, r5
+	add sp, sp, #0x4
+	ldmia sp!, {r4-r7,lr}
+	bx lr
+
+	arm_func_start FS_UnloadArchiveTables
+FS_UnloadArchiveTables: ; 0x020D0CEC
+	stmdb sp!, {r4-r5,lr}
+	sub sp, sp, #0x4
+	mov r5, r0
+	ldr r0, [r5, #0x1c]
+	mov r4, #0x0
+	ands r0, r0, #0x2
+	movne r0, #0x1
+	moveq r0, r4
+	cmp r0, #0x0
+	beq _020D0D74
+	mov r0, r5
+	bl FS_SuspendArchive
+	ldr r1, [r5, #0x1c]
+	ands r1, r1, #0x4
+	movne r1, #0x1
+	moveq r1, #0x0
+	cmp r1, #0x0
+	beq _020D0D64
+	ldr r2, [r5, #0x1c]
+	mov r1, #0x0
+	bic r2, r2, #0x4
+	str r2, [r5, #0x1c]
+	ldr r4, [r5, #0x44]
+	str r1, [r5, #0x44]
+	ldr r1, [r5, #0x3c]
+	str r1, [r5, #0x2c]
+	ldr r1, [r5, #0x40]
+	str r1, [r5, #0x34]
+	ldr r1, [r5, #0x48]
+	str r1, [r5, #0x50]
+_020D0D64:
+	cmp r0, #0x0
+	beq _020D0D74
+	mov r0, r5
+	bl FS_ResumeArchive
+_020D0D74:
+	mov r0, r4
+	add sp, sp, #0x4
+	ldmia sp!, {r4-r5,lr}
+	bx lr
+
+	arm_func_start FUN_020D0D84
+FUN_020D0D84: ; 0x020D0D84
+	stmdb sp!, {r4-r7,lr}
+	sub sp, sp, #0x4c
+	mov r7, r0
+	ldr r3, [r7, #0x30]
+	ldr r0, [r7, #0x38]
+	mov r6, r1
+	add r0, r3, r0
+	add r0, r0, #0x20
+	add r0, r0, #0x1f
+	bic r5, r0, #0x1f
+	cmp r5, r2
+	bhi _020D0E9C
+	add r1, r6, #0x1f
+	add r0, sp, #0x4
+	bic r4, r1, #0x1f
+	bl FS_InitFile
+	ldr r2, [r7, #0x2c]
+	mvn r0, #0x0
+	str r0, [sp, #0x0]
+	ldr r3, [r7, #0x30]
+	add r0, sp, #0x4
+	mov r1, r7
+	add r3, r2, r3
+	bl FS_OpenFileDirect
+_020D0DE4:
+	cmp r0, #0x0
+	beq _020D0E1C
+	ldr r2, [r7, #0x30]
+	add r0, sp, #0x4
+	mov r1, r4
+	bl FS_ReadFile
+	cmp r0, #0x0
+	bge _020D0E14
+	ldr r2, [r7, #0x30]
+	mov r0, r4
+	mov r1, #0x0
+	bl MI_CpuFill8
+_020D0E14:
+	add r0, sp, #0x4
+	bl FS_CloseFile
+_020D0E1C:
+	str r4, [r7, #0x2C]
+	ldr ip, [r7, #0x30]
+	ldr r2, [r7, #0x34]
+	mvn r0, #0x0
+	str r0, [sp]
+	ldr r3, [r7, #0x38]
+	add r0, sp, #0x4
+	mov r1, r7
+	add r3, r2, r3
+	add r4, r4, ip
+	bl FS_OpenFileDirect
+	cmp r0, #0x0
+	beq _020D0E80
+	ldr r2, [r7, #0x38]
+	add r0, sp, #0x4
+	mov r1, r4
+	bl FS_ReadFile
+	cmp r0, #0x0
+	bge _020D0E78
+	ldr r2, [r7, #0x38]
+	mov r0, r4
+	mov r1, #0x0
+	bl MI_CpuFill8
+_020D0E78:
+	add r0, sp, #0x4
+	bl FS_CloseFile
+_020D0E80:
+	str r4, [r7, #0x34]
+	ldr r0, _020D0EAC
+	str r6, [r7, #0x44]
+	str r0, [r7, #0x50]
+	ldr r0, [r7, #0x1C]
+	orr r0, r0, #0x4
+	str r0, [r7, #0x1C]
+_020D0E9C:
+	mov r0, r5
+	add sp, sp, #0x4C
+	ldmia sp!, {r4-r7,lr}
+	bx lr
+_020D0EAC:
+	.word FSi_ReadMemoryCore
+
+	arm_func_start FUN_020D0EB0
+FUN_020D0EB0: ; 0x020D0EB0
+	stmdb sp!, {r4-r8,lr}
+	mov r5, r0
+	bl OS_DisableInterrupts
+	ldr r1, [r5, #0x1c]
+	mov r4, r0
+	ands r0, r1, #0x2
+	movne r0, #0x1
+	moveq r0, #0x0
+	cmp r0, #0x0
+	beq _020D0F64
+	mov r0, r5
+	ldr r1, [r5, #0x1c]
+	bl FS_SuspendArchive
+	ldr r1, [r5, #0x1c]
+	mov r7, r0
+	orr r0, r1, #0x80
+	str r0, [r5, #0x1c]
+	ldr r0, [r5, #0x24]
+	cmp r0, #0x0
+	beq _020D0F1C
+	mov r6, #0x3
+_020D0F04:
+	ldr r8, [r0, #0x4]
+	mov r1, r6
+	bl FSi_ReleaseCommand
+	mov r0, r8
+	cmp r8, #0x0
+	bne _020D0F04
+_020D0F1C:
+	mov r0, #0x0
+	str r0, [r5, #0x24]
+	cmp r7, #0x0
+	beq _020D0F34
+	mov r0, r5
+	bl FS_ResumeArchive
+_020D0F34:
+	mov r0, #0x0
+	str r0, [r5, #0x28]
+	str r0, [r5, #0x2c]
+	str r0, [r5, #0x30]
+	str r0, [r5, #0x34]
+	str r0, [r5, #0x38]
+	str r0, [r5, #0x40]
+	ldr r0, [r5, #0x40]
+	str r0, [r5, #0x3c]
+	ldr r0, [r5, #0x1c]
+	bic r0, r0, #0xa2
+	str r0, [r5, #0x1c]
+_020D0F64:
+	mov r0, r4
+	bl OS_RestoreInterrupts
+	mov r0, #0x1
+	ldmia sp!, {r4-r8,lr}
+	bx lr
+
+	arm_func_start FS_LoadArchive
+FS_LoadArchive: ; 0x020D0F78
+	str r1, [r0, #0x28]
+	str r3, [r0, #0x30]
+	str r2, [r0, #0x3c]
+	ldr r1, [r0, #0x3c]
+	ldr r2, [sp, #0x4]
+	str r1, [r0, #0x2c]
+	str r2, [r0, #0x38]
+	ldr r1, [sp, #0x0]
+	ldr r2, [sp, #0x8]
+	str r1, [r0, #0x40]
+	ldr r1, [r0, #0x40]
+	cmp r2, #0x0
+	str r1, [r0, #0x34]
+	ldreq r2, _020D0FE8 ; =FSi_ReadMemCallback
+	ldr r1, [sp, #0xc]
+	str r2, [r0, #0x48]
+	cmp r1, #0x0
+	ldreq r1, _020D0FEC ; =FSi_WriteMemCallback
+	str r1, [r0, #0x4c]
+	ldr r2, [r0, #0x48]
+	mov r1, #0x0
+	str r2, [r0, #0x50]
+	str r1, [r0, #0x44]
+	ldr r1, [r0, #0x1c]
+	orr r1, r1, #0x2
+	str r1, [r0, #0x1c]
+	mov r0, #0x1
+	bx lr
+	.balign 4
+_020D0FE8: .word FSi_ReadMemCallback
+_020D0FEC: .word FSi_WriteMemCallback
+
+	arm_func_start FUN_020D0FF0
+FUN_020D0FF0: ; 0x020D0FF0
+	stmdb sp!, {r4,lr}
+	mov r4, r0
+	ldr r0, [r4, #0x0]
+	cmp r0, #0x0
+	ldmeqia sp!, {r4,lr}
+	bxeq lr
+	bl OS_DisableInterrupts
+	ldr r2, [r4, #0x4]
+	mov r3, #0x0
+	cmp r2, #0x0
+	ldrne r1, [r4, #0x8]
+	strne r1, [r2, #0x8]
+	ldr r2, [r4, #0x8]
+	cmp r2, #0x0
+	ldrne r1, [r4, #0x4]
+	strne r1, [r2, #0x4]
+	str r3, [r4, #0x0]
+	str r3, [r4, #0x8]
+	ldr r1, [r4, #0x8]
+	ldr r2, _020D1080 ; =0x021D53EC
+	str r1, [r4, #0x4]
+	ldr r1, [r4, #0x1c]
+	bic r1, r1, #0x1
+	str r1, [r4, #0x1c]
+	ldr r1, [r2, #0x0]
+	cmp r1, r4
+	bne _020D1074
+	ldr r1, _020D1084 ; =0x021D53E8
+	str r3, [r2, #0x8]
+	ldr r1, [r1, #0x0]
+	strh r3, [r2, #0x6]
+	str r1, [r2, #0x0]
+	strh r3, [r2, #0x4]
+_020D1074:
+	bl OS_RestoreInterrupts
+	ldmia sp!, {r4,lr}
+	bx lr
+	.balign 4
+_020D1080: .word 0x021D53EC
+_020D1084: .word 0x021D53E8
+
+	arm_func_start FS_RegisterArchiveName
+FS_RegisterArchiveName: ; 0x020D1088
+	stmdb sp!, {r4-r8,lr}
+	mov r6, r1
+	mov r5, r2
+	mov r7, r0
+	mov r8, #0x0
+	bl OS_DisableInterrupts
+	mov r4, r0
+	mov r0, r6
+	mov r1, r5
+	bl FS_FindArchive
+_020D10B0:
+	cmp r0, #0x0
+	bne _020D112C
+	ldr r1, _020D1140
+	ldr r2, [r1]
+	cmp r2, #0x0
+	bne _020D10E8
+	ldr r0, _020D1144
+	mov r2, r8
+	str r7, [r1]
+	str r7, [r0]
+	str r2, [r0, #0x8]
+	strh r2, [r0, #0x6]
+	strh r2, [r0, #0x4]
+	b _020D110C
+_020D10E8:
+	ldr r0, [r2, #0x4]
+	cmp r0, #0x0
+	beq _020D1104
+_020D10F4:
+	mov r2, r0
+	ldr r0, [r0, #0x4]
+	cmp r0, #0x0
+	bne _020D10F4
+_020D1104:
+	str r7, [r2, #0x4]
+	str r2, [r7, #0x8]
+_020D110C:
+	mov r0, r6
+	mov r1, r5
+	bl FSi_GetPackedName
+	str r0, [r7]
+	ldr r0, [r7, #0x1C]
+	mov r8, #0x1
+	orr r0, r0, #0x1
+	str r0, [r7, #0x1C]
+_020D112C:
+	mov r0, r4
+	bl OS_RestoreInterrupts
+	mov r0, r8
+	ldmia sp!, {r4-r8,lr}
+	bx lr
+_020D1140: .word 0x021D53E8
+_020D1144: .word 0x021D53EC
+
+	arm_func_start FS_FindArchive
+FS_FindArchive:
+	stmdb sp!, {r4-r5,lr}
+	sub sp, sp, #0x4
+	bl FSi_GetPackedName
+	mov r5, r0
+	bl OS_DisableInterrupts
+	ldr r1, _020D1194 ; =0x021D53E8
+	ldr r4, [r1, #0x0]
+	b _020D116C
+_020D1168:
+	ldr r4, [r4, #0x4]
+_020D116C:
+	cmp r4, #0x0
+	beq _020D1180
+	ldr r1, [r4, #0x0]
+	cmp r1, r5
+	bne _020D1168
+_020D1180:
+	bl OS_RestoreInterrupts
+	mov r0, r4
+	add sp, sp, #0x4
+	ldmia sp!, {r4-r5,lr}
+	bx lr
+	.balign 4
+_020D1194: .word 0x021D53E8
+
+	arm_func_start FS_InitArchive
+FS_InitArchive: ; 0x020D1198
+	stmdb sp!, {r4,lr}
+	mov r1, #0x0
+	mov r2, #0x5c
+	mov r4, r0
+	bl MI_CpuFill8
+	mov r1, #0x0
+	str r1, [r4, #0x10]
+	ldr r0, [r4, #0x10]
+	str r0, [r4, #0xc]
+	str r1, [r4, #0x18]
+	ldr r0, [r4, #0x18]
+	str r0, [r4, #0x14]
+	ldmia sp!, {r4,lr}
+	bx lr
+
+	arm_func_start FSi_SendCommand
+FSi_SendCommand:
+	stmdb sp!, {r4-r7,lr}
+	sub sp, sp, #0x4
+	mov r7, r0
+	ldr r6, [r7, #0x8]
+	mov r2, #0x1
+	str r1, [r7, #0x10]
+	mov r0, #0x2
+	str r0, [r7, #0x14]
+	ldr r0, [r7, #0xc]
+	mov r5, r2, lsl r1
+	orr r0, r0, #0x1
+	str r0, [r7, #0xc]
+	bl OS_DisableInterrupts
+	ldr r1, [r6, #0x1c]
+	mov r4, r0
+	ands r0, r1, #0x80
+	beq _020D1238
+	mov r0, r7
+	mov r1, #0x3
+	bl FSi_ReleaseCommand
+	mov r0, r4
+	bl OS_RestoreInterrupts
+	add sp, sp, #0x4
+	mov r0, #0x0
+	ldmia sp!, {r4-r7,lr}
+	bx lr
+_020D1238:
+	ands r0, r5, #0x1fc
+	ldrne r0, [r7, #0xc]
+	add r2, r6, #0x20
+	orrne r0, r0, #0x4
+	strne r0, [r7, #0xc]
+	ldr r1, [r7, #0x0]
+	ldr r0, [r7, #0x4]
+	cmp r1, #0x0
+	strne r0, [r1, #0x4]
+	cmp r0, #0x0
+	strne r1, [r0, #0x0]
+	ldr r0, [r2, #0x4]
+	cmp r0, #0x0
+	beq _020D1280
+_020D1270:
+	mov r2, r0
+	ldr r0, [r0, #0x4]
+	cmp r0, #0x0
+	bne _020D1270
+_020D1280:
+	str r7, [r2, #0x4]
+	str r2, [r7, #0x0]
+	mov r1, #0x0
+	str r1, [r7, #0x4]
+	ldr r0, [r6, #0x1c]
+	ands r0, r0, #0x8
+	movne r1, #0x1
+	cmp r1, #0x0
+	bne _020D132C
+	ldr r0, [r6, #0x1c]
+	ands r0, r0, #0x10
+	bne _020D132C
+	ldr r1, [r6, #0x1c]
+	mov r0, r4
+	orr r1, r1, #0x10
+	str r1, [r6, #0x1c]
+	bl OS_RestoreInterrupts
+	ldr r0, [r6, #0x58]
+	ands r0, r0, #0x200
+	beq _020D12E0
+	ldr r2, [r6, #0x54]
+	mov r0, r7
+	mov r1, #0x9
+	blx r2
+_020D12E0:
+	bl OS_DisableInterrupts
+	ldr r1, [r7, #0xc]
+	orr r1, r1, #0x40
+	str r1, [r7, #0xc]
+	ldr r1, [r7, #0xc]
+	ands r1, r1, #0x4
+	movne r1, #0x1
+	moveq r1, #0x0
+	cmp r1, #0x0
+	bne _020D1324
+	bl OS_RestoreInterrupts
+	mov r0, r7
+	bl FSi_ExecuteAsyncCommand
+	add sp, sp, #0x4
+	mov r0, #0x1
+	ldmia sp!, {r4-r7,lr}
+	bx lr
+_020D1324:
+	bl OS_RestoreInterrupts
+	b _020D1378
+_020D132C:
+	ldr r0, [r7, #0xc]
+	ands r0, r0, #0x4
+	movne r0, #0x1
+	moveq r0, #0x0
+	cmp r0, #0x0
+	bne _020D135C
+	mov r0, r4
+	bl OS_RestoreInterrupts
+	add sp, sp, #0x4
+	mov r0, #0x1
+	ldmia sp!, {r4-r7,lr}
+	bx lr
+_020D135C:
+	add r0, r7, #0x18
+	bl OS_SleepThread
+	ldr r0, [r7, #0xc]
+	ands r0, r0, #0x40
+	beq _020D135C
+	mov r0, r4
+	bl OS_RestoreInterrupts
+_020D1378:
+	mov r0, r7
+	bl FSi_ExecuteSyncCommand
+	add sp, sp, #0x4
+	ldmia sp!, {r4-r7,lr}
+	bx lr
+
+	arm_func_start FSi_ExecuteSyncCommand
+FSi_ExecuteSyncCommand: ; 0x020D138C
+	stmdb sp!, {r4,lr}
+	mov r4, r0
+	ldr r1, [r4, #0x10]
+	bl FSi_TranslateCommand
+	mov r1, r0
+	mov r0, r4
+	bl FSi_ReleaseCommand
+	ldr r0, [r4, #0x8]
+	bl FSi_NextCommand
+_020D13B0:
+	cmp r0, #0x0
+	beq _020D13BC
+	bl FSi_ExecuteAsyncCommand
+_020D13BC:
+	ldr r0, [r4, #0x14]
+	cmp r0, #0x0
+	moveq r0, #0x1
+	movne r0, #0x0
+	ldmia sp!, {r4,lr}
+	bx lr
+
+	arm_func_start FSi_ExecuteAsyncCommand
+FSi_ExecuteAsyncCommand: ; 0x020D13D4
+	stmdb sp!, {r4-r8,lr}
+	movs r6, r0
+	ldr r5, [r6, #0x8]
+	ldmeqia sp!, {r4-r8,lr}
+	bxeq lr
+	mov r7, #0x0
+	mov r8, #0x1
+_020D13F0:
+	bl OS_DisableInterrupts
+	ldr r1, [r6, #0xc]
+	mov r4, r0
+	orr r0, r1, #0x40
+	str r0, [r6, #0xc]
+	ldr r0, [r6, #0xc]
+	ands r0, r0, #0x4
+	movne r0, r8
+	moveq r0, r7
+	cmp r0, #0x0
+	beq _020D1434
+	add r0, r6, #0x18
+	bl OS_WakeupThread
+	mov r0, r4
+	bl OS_RestoreInterrupts
+	ldmia sp!, {r4-r8,lr}
+	bx lr
+_020D1434:
+	ldr r1, [r6, #0xc]
+	mov r0, r4
+	orr r1, r1, #0x8
+	str r1, [r6, #0xc]
+	bl OS_RestoreInterrupts
+	ldr r1, [r6, #0x10]
+	mov r0, r6
+	bl FSi_TranslateCommand
+	cmp r0, #0x6
+	ldmeqia sp!, {r4-r8,lr}
+	bxeq lr
+	mov r0, r5
+	bl FSi_NextCommand
+	movs r6, r0
+	bne _020D13F0
+	ldmia sp!, {r4-r8,lr}
+	bx lr
+
+	arm_func_start FSi_NextCommand
+FSi_NextCommand:
+	stmdb sp!, {r4-r9,lr}
+	sub sp, sp, #0x4c
+	mov r6, r0
+	bl OS_DisableInterrupts
+	ldr r1, [r6, #0x1c]
+	mov r5, r0
+	ands r0, r1, #0x20
+	beq _020D1500
+	ldr r0, [r6, #0x1c]
+	bic r0, r0, #0x20
+	str r0, [r6, #0x1c]
+	ldr r0, [r6, #0x24]
+	cmp r0, #0x0
+	beq _020D1500
+	mov r8, #0x0
+	mov r9, #0x1
+	mov r7, #0x3
+_020D14BC:
+	ldr r1, [r0, #0xc]
+	ldr r4, [r0, #0x4]
+	ands r1, r1, #0x2
+	movne r1, r9
+	moveq r1, r8
+	cmp r1, #0x0
+	beq _020D14F4
+	ldr r1, [r6, #0x24]
+	cmp r1, r0
+	mov r1, r7
+	streq r4, [r6, #0x24]
+	bl FSi_ReleaseCommand
+_020D14EC:
+	cmp r4, #0x0
+	ldreq r4, [r6, #0x24]
+_020D14F4:
+	mov r0, r4
+	cmp r4, #0x0
+	bne _020D14BC
+_020D1500:
+	ldr r0, [r6, #0x1c]
+	ands r0, r0, #0x40
+	bne _020D15EC
+	ldr r0, [r6, #0x1c]
+	ands r0, r0, #0x8
+	movne r0, #0x1
+	moveq r0, #0x0
+	cmp r0, #0x0
+	bne _020D15EC
+	ldr r4, [r6, #0x24]
+	cmp r4, #0x0
+	beq _020D15EC
+	ldr r0, [r6, #0x1c]
+	ands r0, r0, #0x10
+	movne r0, #0x1
+	moveq r0, #0x0
+	cmp r0, #0x0
+	moveq r7, #0x1
+	movne r7, #0x0
+	cmp r7, #0x0
+	ldrne r0, [r6, #0x1c]
+	orrne r0, r0, #0x10
+	strne r0, [r6, #0x1c]
+	mov r0, r5
+	bl OS_RestoreInterrupts
+_020D1564:
+	cmp r7, #0x0
+	beq _020D1588
+	ldr r0, [r6, #0x58]
+	ands r0, r0, #0x200
+	beq _020D1588
+	ldr r2, [r6, #0x54]
+	mov r0, r4
+	mov r1, #0x9
+	blx r2
+_020D1588:
+	bl OS_DisableInterrupts
+	ldr r1, [r4, #0xC]
+	mov r5, r0
+	orr r0, r1, #0x40
+	str r0, [r4, #0xC]
+	ldr r0, [r4, #0xC]
+	ands r0, r0, #0x4
+	movne r0, #0x1
+	moveq r0, #0x0
+	cmp r0, #0x0
+	beq _020D15D4
+	add r0, r4, #0x18
+	bl OS_WakeupThread
+	mov r0, r5
+	bl OS_RestoreInterrupts
+	add sp, sp, #0x4c
+	mov r0, #0x0
+	ldmia sp!, {r4-r9, lr}
+	bx lr
+_020D15D4:
+	mov r0, r5
+	bl OS_RestoreInterrupts
+	add sp, sp, #0x4c
+	mov r0, r4
+	ldmia sp!, {r4-r9, lr}
+	bx lr
+_020D15EC:
+	ldr r0, [r6, #0x1c]
+	ands r0, r0, #0x10
+	beq _020D162C
+	ldr r0, [r6, #0x1c]
+	bic r0, r0, #0x10
+	str r0, [r6, #0x1c]
+	ldr r0, [r6, #0x58]
+	ands r0, r0, #0x400
+	beq _020D162C
+	add r0, sp, #0x0
+	bl FS_InitFile
+	str r6, [sp, #0x8]
+	ldr r2, [r6, #0x54]
+	add r0, sp, #0x0
+	mov r1, #0xa
+	blx r2
+_020D162C:
+	ldr r0, [r6, #0x1c]
+	ands r0, r0, #0x40
+	beq _020D1658
+	ldr r1, [r6, #0x1c]
+	add r0, r6, #0x14
+	bic r1, r1, #0x40
+	str r1, [r6, #0x1c]
+	ldr r1, [r6, #0x1c]
+	orr r1, r1, #0x8
+	str r1, [r6, #0x1c]
+	bl OS_WakeupThread
+_020D1658:
+	mov r0, r5
+	bl OS_RestoreInterrupts
+_020D1660:
+	mov r0, #0x0
+	add sp, sp, #0x4c
+	ldmia sp!, {r4-r9, lr}
+	bx lr
+
+	arm_func_start FSi_ReadMemoryCore
+FSi_ReadMemoryCore: ; 0x020D1670
+	stmdb sp!, {lr}
+	sub sp, sp, #0x4
+	mov r0, r2
+	mov r2, r3
+	bl MI_CpuCopy8
+_020D1684:
+	mov r0, #0x0
+	add sp, sp, #0x4
+	ldmfd sp!, {lr}
+	bx lr
+
+	arm_func_start FSi_WriteMemCallback
+FSi_WriteMemCallback: ; 0x020D1694
+	stmdb sp!, {lr}
+	sub sp, sp, #0x4
+	ldr r12, [r0, #0x28]
+	mov r0, r1
+	add r1, r12, r2
+	mov r2, r3
+	bl MI_CpuCopy8
+_020D16B0:
+	mov r0, #0x0
+	add sp, sp, #0x4
+	ldmfd sp!, {lr}
+	bx lr
+
+	arm_func_start FSi_ReadMemCallback
+FSi_ReadMemCallback: ; 0x020D16C0
+	stmdb sp!, {lr}
+	sub sp, sp, #0x4
+	ldr r0, [r0, #0x28]
+	add r0, r0, r2
+	mov r2, r3
+	bl MI_CpuCopy8
+_020D16D8:
+	mov r0, #0x0
+	add sp, sp, #0x4
+	ldmfd sp!, {lr}
+	bx lr
+
+	arm_func_start FSi_GetPackedName
+FSi_GetPackedName: ; 0x020D16E8
+	stmdb sp!, {lr}
+	sub sp, sp, #0x4
+	cmp r1, #0x3
+	mov lr, #0x0
+	bgt _020D173C
+	mov r12, lr
+	cmp r1, #0x0
+	ble _020D173C
+	mov r3, lr
+_020D170C:
+	ldrb r2, [r0, r12]
+	cmp r2, #0x0
+	beq _020D173C
+	sub r2, r2, #0x41
+	cmp r2, #0x19
+	addls r2, r2, #0x61
+	addhi r2, r2, #0x41
+	add r12, r12, #0x1
+	orr lr, lr, r2, lsl r3
+	cmp r12, r1
+	add r3, r3, #0x8
+	blt _020D170C
+_020D173C:
+	mov r0, lr
+	add sp, sp, #0x4
+	ldmia sp!, {lr}
+	bx lr
diff --git a/arm9/asm/FS_command.s b/arm9/asm/FS_command.s
new file mode 100644
index 00000000..0c2ec755
--- /dev/null
+++ b/arm9/asm/FS_command.s
@@ -0,0 +1,140 @@
+	.include "asm/macros.inc"
+	.include "global.inc"
+	.section .text
+
+	arm_func_start FSi_TranslateCommand
+FSi_TranslateCommand:
+	stmdb sp!, {r4-r8,lr}
+	mov r8, r0
+	ldr r0, [r8, #0xc]
+	mov r7, r1
+	mov r1, #0x1
+	ldr r5, [r8, #0x8]
+	mov r4, r1, lsl r7
+	ands r0, r0, #0x4
+	moveq r1, #0x0
+	cmp r1, #0x0
+	ldrne r0, [r5, #0x1c]
+	orrne r0, r0, #0x200
+	strne r0, [r5, #0x1c]
+	ldreq r0, [r5, #0x1c]
+	orreq r0, r0, #0x100
+	streq r0, [r5, #0x1c]
+	ldr r0, [r5, #0x58]
+	ands r0, r0, r4
+	beq _020CFFE4
+	ldr r2, [r5, #0x54]
+	mov r0, r8
+	mov r1, r7
+	blx r2
+	mov r6, r0
+	cmp r6, #0x8
+	addls pc, pc, r6, lsl #0x2
+	b _020CFFE8
+_020CFFA0:
+	b _020CFFC4
+	b _020CFFC4
+	b _020CFFE8
+	b _020CFFE8
+	b _020CFFC4
+	b _020CFFE8
+	b _020CFFE8
+	b _020CFFE8
+	b _020CFFCC
+_020CFFC4:
+	str r6, [r8, #0x14]
+	b _020CFFE8
+_020CFFCC:
+	ldr r1, [r5, #0x58]
+	mvn r0, r4
+	and r0, r1, r0
+	str r0, [r5, #0x58]
+	mov r6, #0x7
+	b _020CFFE8
+_020CFFE4:
+	mov r6, #0x7
+_020CFFE8:
+	cmp r6, #0x7
+	bne _020D0004
+	ldr r1, _020D00AC ; =0x02103F80
+	mov r0, r8
+	ldr r1, [r1, r7, lsl #0x2]
+	blx r1
+	mov r6, r0
+_020D0004:
+	cmp r6, #0x6
+	bne _020D0060
+	ldr r0, [r8, #0xc]
+	ands r0, r0, #0x4
+	movne r0, #0x1
+	moveq r0, #0x0
+	cmp r0, #0x0
+	beq _020D00A0
+	bl OS_DisableInterrupts
+	ldr r1, [r5, #0x1c]
+	mov r4, r0
+	ands r0, r1, #0x200
+	beq _020D0050
+	add r6, r5, #0xc
+_020D003C:
+	mov r0, r6
+	bl OS_SleepThread
+	ldr r0, [r5, #0x1c]
+	ands r0, r0, #0x200
+	bne _020D003C
+_020D0050:
+	mov r0, r4
+	ldr r6, [r8, #0x14]
+	bl OS_RestoreInterrupts
+	b _020D00A0
+_020D0060:
+	ldr r0, [r8, #0xc]
+	ands r0, r0, #0x4
+	movne r0, #0x1
+	moveq r0, #0x0
+	cmp r0, #0x0
+	ldrne r0, [r5, #0x1c]
+	bicne r0, r0, #0x200
+	strne r0, [r5, #0x1c]
+	strne r6, [r8, #0x14]
+	bne _020D00A0
+	ldr r1, [r5, #0x1c]
+	mov r0, r8
+	bic r2, r1, #0x100
+	mov r1, r6
+	str r2, [r5, #0x1c]
+	bl FSi_ReleaseCommand
+_020D00A0:
+	mov r0, r6
+	ldmia sp!, {r4-r8,lr}
+	bx lr
+	.balign 4
+_020D00AC: .word 0x02103F80
+
+	arm_func_start FSi_ReleaseCommand
+FSi_ReleaseCommand:
+	stmdb sp!, {r4-r6,lr}
+	mov r6, r0
+	mov r5, r1
+	bl OS_DisableInterrupts
+	ldr r1, [r6, #0x0]
+	mov r4, r0
+	ldr r0, [r6, #0x4]
+	cmp r1, #0x0
+	strne r0, [r1, #0x4]
+	cmp r0, #0x0
+	strne r1, [r0, #0x0]
+	mov r0, #0x0
+	str r0, [r6, #0x0]
+	ldr r1, [r6, #0x0]
+	add r0, r6, #0x18
+	str r1, [r6, #0x4]
+	ldr r1, [r6, #0xc]
+	bic r1, r1, #0x4f
+	str r1, [r6, #0xc]
+	str r5, [r6, #0x14]
+	bl OS_WakeupThread
+	mov r0, r4
+	bl OS_RestoreInterrupts
+	ldmia sp!, {r4-r6,lr}
+	bx lr
diff --git a/arm9/asm/FS_command_default.s b/arm9/asm/FS_command_default.s
new file mode 100644
index 00000000..eea33a0a
--- /dev/null
+++ b/arm9/asm/FS_command_default.s
@@ -0,0 +1,748 @@
+	.include "asm/macros.inc"
+	.include "global.inc"
+	.section .text
+
+	arm_func_start FSi_CloseFileCommand
+FSi_CloseFileCommand: ; 0x020D0114
+	mov r0, #0x0
+	bx lr
+
+	arm_func_start FSi_OpenFileDirectCommand
+FSi_OpenFileDirectCommand: ; 0x020D011C
+	ldr r1, [r0, #0x30]
+	str r1, [r0, #0x24]
+	ldr r1, [r0, #0x30]
+	str r1, [r0, #0x2c]
+	ldr r1, [r0, #0x34]
+	str r1, [r0, #0x28]
+	ldr r1, [r0, #0x38]
+	str r1, [r0, #0x20]
+	mov r0, #0x0
+	bx lr
+
+	arm_func_start FSi_OpenFileFastCommand
+FSi_OpenFileFastCommand: ; 0x020D0144
+	stmdb sp!, {r4-r5,lr}
+	sub sp, sp, #0x14
+	mov r5, r0
+	ldr r1, [r5, #0x8]
+	ldr r4, [r5, #0x34]
+	ldr r0, [r1, #0x30]
+	mov r2, r4, lsl #0x3
+	cmp r2, r0
+	addcs sp, sp, #0x14
+	movcs r0, #0x1
+	ldmcsia sp!, {r4-r5,lr}
+	bxcs lr
+	str r1, [sp, #0x8]
+	ldr r1, [r1, #0x2c]
+	add r0, sp, #0x8
+	add r3, r1, r2
+	add r1, sp, #0x0
+	mov r2, #0x8
+	str r3, [sp, #0xc]
+	bl FSi_ReadTable
+_020D0194:
+	cmp r0, #0
+	addne sp, sp, #0x14
+	ldmneia sp!, {r4-r5,lr}
+	bxne lr
+	ldr r1, [sp]
+	mov r0, r5
+	str r1, [r5, #0x30]
+	ldr r2, [sp, #0x4]
+	mov r1, #7
+	str r2, [r5, #0x34]
+	str r4, [r5, #0x38]
+	bl FSi_TranslateCommand
+	add sp, sp, #0x14
+	ldmia sp!, {r4-r5,lr}
+	bx lr
+
+	arm_func_start FSi_GetPathCommand
+FSi_GetPathCommand: ; 0x020D01D0
+	stmdb sp!, {r4-r11,lr}
+	sub sp, sp, #0xe4
+	mov r4, r0
+	ldr r1, [r4, #0x8]
+	add r0, sp, #0x98
+	add r11, r4, #0x30
+	str r1, [sp, #0x0]
+	bl FS_InitFile
+	ldr r0, [r4, #0x8]
+	str r0, [sp, #0xa0]
+	ldr r0, [r4, #0xc]
+	ands r0, r0, #0x20
+	movne r0, #0x1
+	moveq r0, #0x0
+	cmp r0, #0x0
+	ldrneh r5, [r4, #0x24]
+	movne r4, #0x10000
+	bne _020D02BC
+	ldrh r0, [r11, #0x8]
+	ldr r4, [r4, #0x20]
+	cmp r0, #0x0
+	ldrneh r5, [r11, #0xa]
+	bne _020D02BC
+	mov r10, #0x0
+	mov r9, r10
+	mov r5, #0x10000
+	add r8, sp, #0x98
+	mov r6, #0x3
+	mov r7, #0x1
+_020D0244:
+	mov r0, r8
+	mov r1, r10
+	bl FSi_SeekDirDirect
+	add r2, sp, #0x4
+	cmp r10, #0x0
+	mov r0, r8
+	mov r1, r6
+	ldreq r9, [sp, #0xc4]
+	str r2, [sp, #0xc8]
+	str r7, [sp, #0xcc]
+	bl FSi_TranslateCommand
+_020D0270:
+	cmp r0, #0x0
+	bne _020D02A8
+_020D0278:
+	ldr r0, [sp, #0x10]
+	cmp r0, #0x0
+	bne _020D0294
+	ldr r0, [sp, #0x8]
+	cmp r0, r4
+	ldreqh r5, [sp, #0xbc]
+	beq _020D02A8
+_020D0294:
+	mov r0, r8
+	mov r1, r6
+	bl FSi_TranslateCommand
+	cmp r0, #0x0
+	beq _020D0278
+_020D02A8:
+	cmp r5, #0x10000
+	bne _020D02BC
+	add sl, sl, #0x1
+	cmp sl, r9
+	bcc _020D0244
+_020D02BC:
+	cmp r5, #0x10000
+	moveq r0, #0x0
+	streqh r0, [r11, #0x8]
+	addeq sp, sp, #0xe4
+	moveq r0, #0x1
+	ldmeqia sp!, {r4-r11,lr}
+	bxeq lr
+	ldrh r0, [r11, #0x8]
+	cmp r0, #0x0
+	bne _020D03B8
+	ldr r0, [sp, #0x0]
+	mov r1, #0x0
+	ldr r0, [r0, #0x0]
+	cmp r0, #0xff
+	addls r9, r1, #0x1
+	bls _020D0308
+	cmp r0, #0xff00
+	addls r9, r1, #0x2
+	addhi r9, r1, #0x3
+_020D0308:
+	cmp r4, #0x10000
+	ldrne r0, [sp, #0x14]
+	add r9, r9, #0x2
+	addne r9, r9, r0
+	mov r10, r5
+	cmp r5, #0x0
+	beq _020D03AC
+	add r0, sp, #0x98
+	mov r1, r5
+	bl FSi_SeekDirDirect
+	add r8, sp, #0x98
+	mov r6, #0x3
+	mov r7, #0x1
+_020D033C:
+	ldr r1, [sp, #0xc4]
+	mov r0, r8
+	bl FSi_SeekDirDirect
+	add r2, sp, #0x4
+	mov r0, r8
+	mov r1, r6
+	str r2, [sp, #0xc8]
+	str r7, [sp, #0xcc]
+	bl FSi_TranslateCommand
+_020D0360:
+	cmp r0, #0x0
+	bne _020D03A0
+_020D0368:
+	ldr r0, [sp, #0x10]
+	cmp r0, #0x0
+	beq _020D038C
+	ldrh r0, [sp, #0x8]
+	cmp r0, sl
+	ldreq r0, [sp, #0x14]
+	addeq r0, r0, #0x1
+	addeq r9, r9, r0
+	beq _020D03A0
+_020D038C:
+	mov r0, r8
+	mov r1, r6
+	bl FSi_TranslateCommand
+	cmp r0, #0x0
+	beq _020D0368
+_020D03A0:
+	ldrh sl, [sp, #0xbc]
+	cmp sl, #0x0
+	bne _020D033C
+_020D03AC:
+	add r0, r9, #0x1
+	strh r0, [r11, #0x8]
+	strh r5, [r11, #0xa]
+_020D03B8:
+	ldr r7, [r11, #0x0]
+	cmp r7, #0x0
+	addeq sp, sp, #0xe4
+	moveq r0, #0x0
+	ldmeqia sp!, {r4-r11,lr}
+	bxeq lr
+	ldrh r6, [r11, #0x8]
+	ldr r0, [r11, #0x4]
+	cmp r0, r6
+	addcc sp, sp, #0xe4
+	movcc r0, #0x1
+	ldmccia sp!, {r4-r11,lr}
+	bxcc lr
+	ldr r0, [sp, #0x0]
+	mov r9, #0x0
+	ldr r0, [r0, #0x0]
+	cmp r0, #0xff
+	movls r8, #0x1
+	bls _020D0410
+	cmp r0, #0xff00
+	movls r8, #0x2
+	movhi r8, #0x3
+_020D0410:
+	ldr r0, [sp, #0x0]
+	mov r1, r7
+	mov r2, r8
+	bl MI_CpuCopy8
+	add r1, r9, r8
+	ldr r0, _020D058C ; =0x0210682C
+	add r1, r7, r1
+	mov r2, #0x2
+	bl MI_CpuCopy8
+	add r0, sp, #0x98
+	mov r1, r5
+	bl FSi_SeekDirDirect
+	cmp r4, #0x10000
+	beq _020D04C4
+	add r3, sp, #0x4
+	mov r2, #0x0
+	add r0, sp, #0x98
+	mov r1, #0x3
+	str r3, [sp, #0xc8]
+	str r2, [sp, #0xcc]
+	bl FSi_TranslateCommand
+_020D0464:
+	cmp r0, #0x0
+	bne _020D04A0
+	add r9, sp, #0x98
+	mov r8, #0x3
+_020D0474:
+	ldr r0, [sp, #0x10]
+	cmp r0, #0x0
+	bne _020D048C
+	ldr r0, [sp, #0x8]
+	cmp r0, r4
+	beq _020D04A0
+_020D048C:
+	mov r0, r9
+	mov r1, r8
+	bl FSi_TranslateCommand
+	cmp r0, #0x0
+	beq _020D0474
+_020D04A0:
+	ldr r0, [sp, #0x14]
+	add r1, r7, r6
+	add r4, r0, #0x1
+	add r0, sp, #0x18
+	mov r2, r4
+	sub r1, r1, r4
+	bl MI_CpuCopy8
+	sub r6, r6, r4
+	b _020D04D4
+_020D04C4:
+	add r0, r7, r6
+	mov r1, #0x0
+	strb r1, [r0, #-0x1]
+	sub r6, r6, #0x1
+_020D04D4:
+	cmp r5, #0x0
+	beq _020D057C
+	add r10, sp, #0x98
+	add r11, sp, #0x4
+	mov r4, #0x3
+	mov r9, #0x0
+	mov r8, #0x2f
+_020D04F0:
+	ldr r1, [sp, #0xc4]
+	mov r0, r10
+	bl FSi_SeekDirDirect
+	add r2, r7, r6
+	mov r0, r10
+	mov r1, r4
+	str r11, [sp, #0xc8]
+	str r9, [sp, #0xcc]
+	strb r8, [r2, #-0x1]
+	sub r6, r6, #0x1
+	bl FSi_TranslateCommand
+_020D051C:
+	cmp r0, #0x0
+	bne _020D0570
+_020D0524:
+	ldr r0, [sp, #0x10]
+	cmp r0, #0x0
+	beq _020D055C
+	ldrh r0, [sp, #0x8]
+	cmp r0, r5
+	bne _020D055C
+	ldr r5, [sp, #0x14]
+	add r1, r7, r6
+	add r0, sp, #0x18
+	mov r2, r5
+	sub r1, r1, r5
+	bl MI_CpuCopy8
+	sub r6, r6, r5
+	b _020D0570
+_020D055C:
+	mov r0, sl
+	mov r1, r4
+	bl FSi_TranslateCommand
+	cmp r0, #0x0
+	beq _020D0524
+_020D0570:
+	ldrh r5, [sp, #0xbc]
+	cmp r5, #0x0
+	bne _020D04F0
+_020D057C:
+	mov r0, #0x0
+	add sp, sp, #0xe4
+	ldmia sp!, {r4-r11,lr}
+	bx lr
+	.balign 4
+_020D058C: .word 0x0210682C
+
+	arm_func_start FSi_FindPathCommand
+FSi_FindPathCommand: ; 0x020D0590
+	stmdb sp!, {r4-r11,lr}
+	sub sp, sp, #0x9c
+	mov r10, r0
+	ldr r2, [r10, #0x40]
+	ldr r9, [r10, #0x3c]
+	mov r1, #0x2
+	str r2, [sp, #0x0]
+	bl FSi_TranslateCommand
+	ldrb r1, [r9, #0x0]
+	cmp r1, #0x0
+	beq _020D0780
+	mov r0, #0x2
+	add r11, sp, #0x1c
+	mov r4, #0x3
+	mov r5, #0x1
+	mov r6, #0x0
+	str r0, [sp, #0x4]
+_020D05D4:
+	mov r7, r6
+	b _020D05E0
+_020D05DC:
+	add r7, r7, #0x1
+_020D05E0:
+	ldrb r8, [r9, r7]
+	mov r0, r6
+	cmp r8, #0x0
+	beq _020D0600
+	cmp r8, #0x2f
+	beq _020D0600
+	cmp r8, #0x5c
+	movne r0, r5
+_020D0600:
+	cmp r0, #0x0
+	bne _020D05DC
+	cmp r8, #0x0
+	bne _020D061C
+	ldr r0, [sp, #0x0]
+	cmp r0, #0x0
+	beq _020D0620
+_020D061C:
+	mov r8, r5
+_020D0620:
+	cmp r7, #0x0
+	addeq sp, sp, #0x9c
+	moveq r0, #0x1
+	ldmeqia sp!, {r4-r11,lr}
+	bxeq lr
+	cmp r1, #0x2e
+	bne _020D068C
+	cmp r7, #0x1
+	addeq r9, r9, #0x1
+	beq _020D0764
+	ldrb r0, [r9, #0x1]
+	cmp r7, #0x2
+	moveq r1, r5
+	movne r1, r6
+	cmp r0, #0x2e
+	moveq r0, r5
+	movne r0, r6
+	ands r0, r1, r0
+	beq _020D068C
+	ldrh r0, [r10, #0x24]
+	cmp r0, #0x0
+	beq _020D0684
+	ldr r1, [r10, #0x2c]
+	mov r0, r10
+	bl FSi_SeekDirDirect
+_020D0684:
+	add r9, r9, #0x2
+	b _020D0764
+_020D068C:
+	cmp r7, #0x7f
+	addgt sp, sp, #0x9c
+	movgt r0, #0x1
+	ldmgtia sp!, {r4-r11,lr}
+	bxgt lr
+	add r0, sp, #0x8
+	str r0, [r10, #0x30]
+	str r6, [r10, #0x34]
+_020D06AC:
+	mov r0, r10
+	mov r1, r4
+	bl FSi_TranslateCommand
+_020D06B8:
+	cmp r0, #0x0
+	addne sp, sp, #0x9c
+	movne r0, #0x1
+	ldmneia sp!, {r4-r11,lr}
+	bxne lr
+	ldr r0, [sp, #0x14]
+	cmp r8, r0
+	bne _020D06AC
+	ldr r0, [sp, #0x18]
+	cmp r7, r0
+	bne _020D06AC
+	mov r0, r9
+	mov r1, fp
+	mov r2, r7
+	bl FSi_StrNICmp
+	cmp r0, #0x0
+	bne _020D06AC
+	cmp r8, #0x0
+	beq _020D0728
+	add r0, sp, #0x8
+	add r3, sl, #0x30
+	ldmia r0, {r0, r1, r2}
+	stmia r3, {r0, r1, r2}
+	ldr r1, [sp, #0x4]
+	mov r0, sl
+	add r9, r9, r7
+	bl FSi_TranslateCommand
+	b _020D0764
+_020D0728:
+	ldr r0, [sp]
+	cmp r0, #0x0
+	addne sp, sp, #0x9c
+	movne r0, #0x1
+	ldmneia sp!, {r4-r11,lr}
+	bxne lr
+	ldr r3, [sl, #0x44]
+	ldr r2, [sp, #0x8]
+	ldr r1, [sp, #0xC]
+	add sp, sp, #0x9c
+	str r2, [r3]
+	str r1, [r3, #0x4]
+	mov r0, #0x0
+	ldmia sp!, {r4-r11,lr}
+	bx lr
+_020D0764:
+	ldrb r0, [r9, #0x0]
+	cmp r0, #0x0
+	movne r0, r5
+	moveq r0, r6
+	ldrb r1, [r9, r0]!
+	cmp r1, #0x0
+	bne _020D05D4
+_020D0780:
+	ldr r0, [sp, #0x0]
+	cmp r0, #0x0
+	moveq r0, #0x1
+	addne r0, r10, #0x20
+	ldrne r3, [r10, #0x44]
+	ldmneia r0, {r0-r2}
+	stmneia r3, {r0-r2}
+	movne r0, #0x0
+	add sp, sp, #0x9c
+	ldmia sp!, {r4-r11,lr}
+	bx lr
+
+	arm_func_start FSi_ReadDirCommand
+FSi_ReadDirCommand: ; 0x020D07AC
+	stmdb sp!, {r4-r5,lr}
+	sub sp, sp, #0xc
+	mov r5, r0
+	ldr r4, [r5, #0x30]
+	ldr r1, [r5, #0x8]
+	add r0, sp, #0x4
+	str r1, [sp, #0x4]
+	ldr r3, [r5, #0x28]
+	add r1, sp, #0x0
+	mov r2, #0x1
+	str r3, [sp, #0x8]
+	bl FSi_ReadTable
+_020D07DC:
+	cmp r0, #0x0
+	addne sp, sp, #0xC
+	ldmneia sp!, {r4-r5,lr}
+	bxne lr
+	ldrb r1, [sp]
+	and r2, r1, #0x7F
+	mov r1, r1, asr #0x7
+	str r2, [r4, #0x10]
+	and r1, r1, #0x1
+	str r1, [r4, #0xC]
+	ldr r2, [r4, #0x10]
+	cmp r2, #0x0
+	addeq sp, sp, #0xC
+	moveq r0, #0x1
+	ldmeqia sp!, {r4-r5,lr}
+	bxeq lr
+	ldr r1, [r5, #0x34]
+	cmp r1, #0x0
+	bne _020D0858
+	add r0, sp, #0x4
+	add r1, r4, #0x14
+	bl FSi_ReadTable
+	cmp r0, #0x0
+	addne sp, sp, #0xC
+	ldmneia sp!, {r4-r5,lr}
+	bxne lr
+	ldr r1, [r4, #0x10]
+	mov r2, #0x0
+	add r1, r4, r1
+	strb r2, [r1, #0x14]
+	b _020D0864
+_020D0858:
+	ldr r1, [sp, #0x8]
+	add r1, r1, r2
+	str r1, [sp, #0x8]
+_020D0864:
+	ldr r1, [r4, #0xC]
+	cmp r1, #0x0
+	beq _020D08B8
+	add r0, sp, #0x4
+	add r1, sp, #0x2
+	mov r2, #0x2
+	bl FSi_ReadTable
+	cmp r0, #0x0
+	addne sp, sp, #0xC
+	ldmneia sp!, {r4-r5,lr}
+	bxne lr
+	ldr r2, [r5, #0x8]
+	ldr r1, _020D08E8
+	str r2, [r4]
+	ldrh r3, [sp, #0x2]
+	mov r2, #0x0
+	and r1, r3, r1
+	strh r1, [r4, #0x4]
+	strh r2, [r4, #0x6]
+	str r2, [r4, #0x8]
+	b _020D08D4
+_020D08B8:
+	ldr r1, [r5, #0x8]
+	str r1, [r4]
+	ldrh r1, [r5, #0x26]
+	str r1, [r4, #0x4]
+	ldrh r1, [r5, #0x26]
+	add r1, r1, #0x1
+	strh r1, [r5, #0x26]
+_020D08D4:
+	ldr r1, [sp, #0x8]
+	str r1, [r5, #0x28]
+	add sp, sp, #0xC
+	ldmia sp!, {r4-r5,lr}
+	bx lr
+_020D08E8: .word 0x00000FFF
+
+	arm_func_start FSi_SeekDirCommand
+FSi_SeekDirCommand: ; 0x020D08EC
+	stmdb sp!, {r4-r6,lr}
+	sub sp, sp, #0x10
+	mov r6, r0
+	ldr r5, [r6, #0x8]
+	add r4, r6, #0x30
+	str r5, [sp, #0x8]
+	ldrh r1, [r4, #0x4]
+	ldr r2, [r5, #0x34]
+	add r0, sp, #0x8
+	add r3, r2, r1, lsl #0x3
+	add r1, sp, #0x0
+	mov r2, #0x8
+	str r3, [sp, #0xc]
+	bl FSi_ReadTable
+	movs r3, r0
+	bne _020D0978
+	add r12, r6, #0x20
+	ldmia r4, {r0-r2}
+	stmia r12, {r0-r2}
+	ldrh r0, [r4, #0x6]
+	cmp r0, #0x0
+	bne _020D0968
+	ldr r0, [r4, #0x8]
+	cmp r0, #0x0
+	bne _020D0968
+	ldrh r0, [sp, #0x4]
+	strh r0, [r6, #0x26]
+	ldr r1, [r5, #0x34]
+	ldr r0, [sp, #0x0]
+	add r0, r1, r0
+	str r0, [r6, #0x28]
+_020D0968:
+	ldrh r1, [sp, #0x6]
+	ldr r0, _020D0988 ; =0x00000FFF
+	and r0, r1, r0
+	str r0, [r6, #0x2c]
+_020D0978:
+	mov r0, r3
+	add sp, sp, #0x10
+	ldmia sp!, {r4-r6,lr}
+	bx lr
+	.balign 4
+_020D0988: .word 0x00000FFF
+
+	arm_func_start FSi_WriteFileCommand
+FSi_WriteFileCommand: ; 0x020D098C
+	stmdb sp!, {lr}
+	sub sp, sp, #0x4
+	ldr r2, [r0, #0x2c]
+	ldr r3, [r0, #0x38]
+	ldr lr, [r0, #0x8]
+	ldr r1, [r0, #0x30]
+	add r12, r2, r3
+	str r12, [r0, #0x2c]
+	ldr r12, [lr, #0x4c]
+	mov r0, lr
+	blx r12
+	add sp, sp, #0x4
+	ldmia sp!, {lr}
+	bx lr
+
+	arm_func_start FSi_ReadFileCommand
+FSi_ReadFileCommand: ; 0x020D09C4
+	stmdb sp!, {lr}
+	sub sp, sp, #0x4
+	ldr r2, [r0, #0x2c]
+	ldr r3, [r0, #0x38]
+	ldr lr, [r0, #0x8]
+	ldr r1, [r0, #0x30]
+	add r12, r2, r3
+	str r12, [r0, #0x2c]
+	ldr r12, [lr, #0x48]
+	mov r0, lr
+	blx r12
+	add sp, sp, #0x4
+	ldmia sp!, {lr}
+	bx lr
+
+	arm_func_start FSi_SeekDirDirect
+FSi_SeekDirDirect: ; 0x020D09FC
+	ldr r3, [r0, #0xc]
+	mov r2, #0x0
+	orr r3, r3, #0x4
+	str r3, [r0, #0xc]
+	ldr r3, [r0, #0x8]
+	ldr ip, _020D0A2C ; =FSi_TranslateCommand
+	str r3, [r0, #0x30]
+	str r2, [r0, #0x38]
+	strh r2, [r0, #0x36]
+	strh r1, [r0, #0x34]
+	mov r1, #0x2
+	bx r12
+	.balign 4
+_020D0A2C: .word FSi_TranslateCommand
+
+	arm_func_start FSi_ReadTable
+FSi_ReadTable:
+	stmdb sp!, {r4-r8,lr}
+	mov r7, r0
+	ldr r5, [r7, #0x0]
+	mov r6, r2
+	ldr r2, [r5, #0x1c]
+	mov r0, r5
+	orr r2, r2, #0x200
+	str r2, [r5, #0x1c]
+	ldr r2, [r7, #0x4]
+	ldr r4, [r5, #0x50]
+	mov r3, r6
+	blx r4
+	cmp r0, #0x0
+	beq _020D0A7C
+	cmp r0, #0x1
+	beq _020D0A7C
+	cmp r0, #0x6
+	beq _020D0A8C
+	b _020D0AC8
+_020D0A7C:
+	ldr r1, [r5, #0x1c]
+	bic r1, r1, #0x200
+	str r1, [r5, #0x1c]
+	b _020D0AC8
+_020D0A8C:
+	bl OS_DisableInterrupts
+	ldr r1, [r5, #0x1c]
+	mov r4, r0
+	ands r0, r1, #0x200
+	beq _020D0AB8
+	add r8, r5, #0xc
+_020D0AA4:
+	mov r0, r8
+	bl OS_SleepThread
+	ldr r0, [r5, #0x1c]
+	ands r0, r0, #0x200
+	bne _020D0AA4
+_020D0AB8:
+	mov r0, r4
+	bl OS_RestoreInterrupts
+	ldr r0, [r5, #0x24]
+	ldr r0, [r0, #0x14]
+_020D0AC8:
+	ldr r1, [r7, #0x4]
+	add r1, r1, r6
+	str r1, [r7, #0x4]
+	ldmia sp!, {r4-r8,lr}
+	bx lr
+
+	arm_func_start FSi_StrNICmp
+FSi_StrNICmp: ; 0x020D0ADC
+	stmdb sp!, {lr}
+	sub sp, sp, #0x4
+	cmp r2, #0x0
+	mov lr, #0x0
+	bls _020D0B30
+_020D0AF0:
+	ldrb r12, [r0, lr]
+	ldrb r3, [r1, lr]
+	sub r12, r12, #0x41
+	cmp r12, #0x19
+	sub r3, r3, #0x41
+	addls r12, r12, #0x20
+	cmp r3, #0x19
+	addls r3, r3, #0x20
+	cmp r12, r3
+	addne sp, sp, #0x4
+	subne r0, r12, r3
+	ldmneia sp!, {lr}
+	bxne lr
+	add lr, lr, #0x1
+	cmp lr, r2
+	blo _020D0AF0
+_020D0B30:
+	mov r0, #0x0
+	add sp, sp, #0x4
+	ldmia sp!, {lr}
+	bx lr
diff --git a/arm9/asm/FS_overlay.s b/arm9/asm/FS_overlay.s
new file mode 100644
index 00000000..78635558
--- /dev/null
+++ b/arm9/asm/FS_overlay.s
@@ -0,0 +1,546 @@
+	.include "asm/macros.inc"
+	.include "global.inc"
+	.section .text
+
+	arm_func_start FS_UnloadOverlay
+FS_UnloadOverlay: ; 0x020D2040
+	stmdb sp!, {lr}
+	sub sp, sp, #0x2c
+	mov r3, r0
+	mov r2, r1
+	add r0, sp, #0x0
+	mov r1, r3
+	bl FS_LoadOverlayInfo
+_020D205C:
+	cmp r0, #0x0
+	beq _020D2074
+	add r0, sp, #0x0
+	bl FS_UnloadOverlayImage
+	cmp r0, #0x0
+	bne _020D2084
+_020D2074:
+	add sp, sp, #0x2c
+	mov r0, #0x0
+	ldmfd sp!, {lr}
+	bx lr
+_020D2084:
+	mov r0, #0x1
+	add sp, sp, #0x2c
+	ldmfd sp!, {lr}
+	bx lr
+
+	arm_func_start FS_LoadOverlay
+FS_LoadOverlay: ; 0x020D2094
+	stmdb sp!, {lr}
+	sub sp, sp, #0x2c
+	mov r3, r0
+	mov r2, r1
+	add r0, sp, #0x0
+	mov r1, r3
+	bl FS_LoadOverlayInfo
+_020D20B0:
+	cmp r0, #0x0
+	beq _020D20C8
+	add r0, sp, #0x0
+	bl FS_LoadOverlayImage
+	cmp r0, #0x0
+	bne _020D20D8
+_020D20C8:
+	add sp, sp, #0x2c
+	mov r0, #0x0
+	ldmfd sp!, {lr}
+	bx lr
+_020D20D8:
+	add r0, sp, #0x0
+	bl FS_StartOverlay
+	mov r0, #0x1
+	add sp, sp, #0x2c
+	ldmfd sp!, {lr}
+	bx lr
+
+	arm_func_start FS_UnloadOverlayImage
+FS_UnloadOverlayImage: ; 0x020D20F0
+	stmdb sp!, {lr}
+	sub sp, sp, #0x4
+	bl FS_EndOverlay
+	mov r0, #0x1
+	add sp, sp, #0x4
+	ldmia sp!, {lr}
+	bx lr
+
+	arm_func_start FS_EndOverlay
+FS_EndOverlay: ; 0x020D210C
+	stmdb sp!, {r4-r11,lr}
+	sub sp, sp, #0x4
+	ldr r8, _020D220C ; =0x021D74C8
+	mov r11, r0
+	mov r9, #0x0
+_020D2120:
+	ldr r1, [r11, #0x8]
+	ldr r0, [r11, #0xc]
+	ldr r5, [r11, #0x4]
+	add r0, r1, r0
+	mov r7, r9
+	mov r6, r9
+	add r4, r5, r0
+	bl OS_DisableInterrupts
+	ldr lr, [r8, #0x0]
+	mov r10, r9
+	mov r12, lr
+	cmp lr, #0x0
+	beq _020D21C4
+_020D2154:
+	ldr r2, [r12, #0x8]
+	ldr r3, [r12, #0x0]
+	cmp r2, #0x0
+	ldr r1, [r12, #0x4]
+	bne _020D2178
+	cmp r1, r5
+	blo _020D2178
+	cmp r1, r4
+	blo _020D2188
+_020D2178:
+	cmp r2, r5
+	blo _020D21B4
+	cmp r2, r4
+	bhs _020D21B4
+_020D2188:
+	cmp r6, #0x0
+	strne r12, [r6, #0x0]
+	moveq r7, r12
+	cmp lr, r12
+	streq r3, [r8, #0x0]
+	moveq lr, r3
+	str r9, [r12, #0x0]
+	cmp r10, #0x0
+	mov r6, r12
+	strne r3, [r10, #0x0]
+	b _020D21B8
+_020D21B4:
+	mov r10, r12
+_020D21B8:
+	mov r12, r3
+	cmp r3, #0x0
+	bne _020D2154
+_020D21C4:
+	bl OS_RestoreInterrupts
+_020D21C8:
+	cmp r7, #0x0
+	addeq sp, sp, #0x4
+	ldmeqia sp!, {r4-r11, lr}
+	bxeq lr
+_020D21D8:
+	ldr r1, [r7, #0x4]
+	ldr r4, [r7]
+	cmp r1, #0x0
+	beq _020D21F0
+	ldr r0, [r7, #0x8]
+	blx r1
+_020D21F0:
+	mov r7, r4
+	cmp r4, #0x0
+	bne _020D21D8
+	b _020D2120
+	add sp, sp, #0x4
+	ldmia sp!, {r4-r11, lr}
+	bx lr
+_020D220C: .word 0x021D74C8
+
+	arm_func_start FS_StartOverlay
+FS_StartOverlay: ; 0x020D2210
+	stmdb sp!, {r4-r6,lr}
+	mov r5, r0
+	bl FSi_GetOverlayBinarySize
+	ldr r1, _020D2300 ; =0x027FFC40
+	mov r4, r0
+	ldrh r0, [r1, #0x0]
+	cmp r0, #0x2
+	bne _020D22A4
+	ldrb r1, [r5, #0x1f]
+	mov r0, #0x0
+	ands r1, r1, #0x2
+	beq _020D2280
+	ldr r1, _020D2304 ; =0x02106F84
+	ldr r3, _020D2308 ; =0x02106F84
+	ldr r2, _020D230C ; =0x66666667
+	sub r12, r1, r3
+	smull r1, lr, r2, r12
+	mov lr, lr, asr #0x3
+	mov r1, r12, lsr #0x1f
+	ldr r2, [r5, #0x0]
+	add lr, r1, lr
+	cmp r2, lr
+	bhs _020D2280
+	mov r0, #0x14
+	mla r0, r2, r0, r3
+	ldr r1, [r5, #0x4]
+	mov r2, r4
+	bl FSi_CompareDigest
+_020D2280:
+	cmp r0, #0x0
+	bne _020D22A4
+	ldr r0, [r5, #0x4]
+	mov r2, r4
+	mov r1, #0x0
+	bl MI_CpuFill8
+	bl OS_Terminate
+	ldmia sp!, {r4-r6,lr}
+	bx lr
+_020D22A4:
+	ldrb r0, [r5, #0x1f]
+	ands r0, r0, #0x1
+	beq _020D22BC
+	ldr r0, [r5, #0x4]
+	add r0, r0, r4
+	bl MIi_UncompressBackward
+_020D22BC:
+	ldr r0, [r5, #0x4]
+	ldr r1, [r5, #0x8]
+	bl DC_FlushRange
+	ldr r6, [r5, #0x10]
+	ldr r4, [r5, #0x14]
+	cmp r6, r4
+	ldmcsia sp!, {r4-r6,lr}
+	bxcs lr
+_020D22DC:
+	ldr r0, [r6, #0x0]
+	cmp r0, #0x0
+	beq _020D22EC
+	blx r0
+_020D22EC:
+	add r6, r6, #0x4
+	cmp r6, r4
+	blo _020D22DC
+	ldmia sp!, {r4-r6,lr}
+	bx lr
+	.balign 4
+_020D2300: .word 0x027FFC40
+_020D2304: .word 0x02106F84
+_020D2308: .word 0x02106F84
+_020D230C: .word 0x66666667
+
+	arm_func_start FSi_CompareDigest
+FSi_CompareDigest:
+	stmdb sp!, {r4-r6,lr}
+	sub sp, sp, #0x58
+	mov r4, r0
+	mov r6, r1
+	mov r5, r2
+	add r0, sp, #0x4
+	mov r1, #0x0
+	mov r2, #0x14
+	bl MI_CpuFill8
+	ldr r0, _020D23AC ; =0x02106834
+	ldr r1, _020D23B0 ; =0x02106838
+	ldr r0, [r0, #0x0]
+	ldr r2, [r1, #0x0]
+	add r1, sp, #0x18
+	bl MI_CpuCopy8
+	ldr r3, _020D23B0 ; =0x02106838
+	mov r1, r6
+	ldr r12, [r3, #0x0]
+	mov r2, r5
+	add r0, sp, #0x4
+	add r3, sp, #0x18
+	str r12, [sp, #0x0]
+	bl MATH_CalcHMACSHA1
+	add r2, sp, #0x4
+	mov r3, #0x0
+_020D2374:
+	ldr r1, [r2, #0x0]
+	ldr r0, [r4, r3]
+	cmp r1, r0
+	bne _020D2394
+	add r3, r3, #0x4
+	cmp r3, #0x14
+	add r2, r2, #0x4
+	blo _020D2374
+_020D2394:
+	cmp r3, #0x14
+	moveq r0, #0x1
+	movne r0, #0x0
+	add sp, sp, #0x58
+	ldmia sp!, {r4-r6,lr}
+	bx lr
+	.balign 4
+_020D23AC: .word 0x02106834
+_020D23B0: .word 0x02106838
+
+	arm_func_start FS_LoadOverlayImage
+FS_LoadOverlayImage: ; 0x020D23B4
+	stmdb sp!, {r4-r5,lr}
+	sub sp, sp, #0x54
+	mov r5, r0
+	add r0, sp, #0x8
+	bl FS_InitFile
+_020D23C8:
+	add r0, sp, #0x0
+	mov r1, r5
+	bl FS_GetOverlayFileID
+	add r1, sp, #0x0
+	add r0, sp, #0x8
+	ldmia r1, {r1, r2}
+	bl FS_OpenFileFast
+	cmp r0, #0x0
+	addeq sp, sp, #0x54
+	moveq r0, #0x0
+	ldmeqia sp!, {r4-r5, lr}
+	bxeq lr
+	mov r0, r5
+	bl FSi_GetOverlayBinarySize
+	mov r4, r0
+	mov r0, r5
+	bl FS_ClearOverlayImage
+	ldr r1, [r5, #0x4]
+	add r0, sp, #0x8
+	mov r2, r4
+	bl FS_ReadFile
+	cmp r4, r0
+	beq _020D243C
+	add r0, sp, #0x8
+	bl FS_CloseFile
+	add sp, sp, #0x54
+	mov r0, #0x0
+	ldmia sp!, {r4-r5, lr}
+	bx lr
+_020D243C:
+	add r0, sp, #0x8
+	bl FS_CloseFile
+	mov r0, #0x1
+	add sp, sp, #0x54
+	ldmia sp!, {r4-r5, lr}
+	bx lr
+
+	arm_func_start FS_LoadOverlayImageAsync
+FS_LoadOverlayImageAsync: ; 0x020D2454
+	stmdb sp!, {r4-r6,lr}
+	sub sp, sp, #0x8
+	mov r5, r1
+	mov r6, r0
+	mov r0, r5
+	bl FS_InitFile
+_020D246C:
+	add r0, sp, #0x0
+	mov r1, r6
+	bl FS_GetOverlayFileID
+	add r1, sp, #0x0
+	mov r0, r5
+	ldmia r1, {r1, r2}
+	bl FS_OpenFileFast
+	cmp r0, #0x0
+	addeq sp, sp, #0x8
+	moveq r0, #0x0
+	ldmeqia sp!, {r4-r6, lr}
+	bxeq lr
+	mov r0, r6
+	bl FSi_GetOverlayBinarySize
+	mov r4, r0
+	mov r0, r6
+	bl FS_ClearOverlayImage
+	ldr r1, [r6, #0x4]
+	mov r0, r5
+	mov r2, r4
+	bl FS_ReadFileAsync
+	cmp r4, r0
+	addeq sp, sp, #0x8
+	moveq r0, #0x1
+	ldmeqia sp!, {r4-r6, lr}
+	bxeq lr
+	mov r0, r5
+	bl FS_CloseFile
+	mov r0, #0x0
+	add sp, sp, #0x8
+	ldmia sp!, {r4-r6, lr}
+	bx lr
+
+	arm_func_start FS_LoadOverlayInfo
+FS_LoadOverlayInfo:
+	stmdb sp!, {r4-r5,lr}
+	sub sp, sp, #0x64
+	movs r4, r1
+	mov r5, r0
+	ldreq r0, _020D25EC ; =0x021D5404
+	ldrne r0, _020D25F0 ; =0x021D540C
+	ldr r3, [r0, #0x0]
+	cmp r3, #0x0
+	beq _020D25A8
+	ldr r0, [r0, #0x4]
+	mov r2, r2, lsl #0x5
+	cmp r2, r0
+	addcs sp, sp, #0x64
+	movcs r0, #0x0
+	ldmcsia sp!, {r4-r5,lr}
+	bxcs lr
+	add r0, r3, r2
+	mov r1, r5
+	mov r2, #0x20
+	bl MI_CpuCopy8
+	add r0, sp, #0x18
+	str r4, [r5, #0x20]
+	bl FS_InitFile
+	add r0, sp, #0x10
+	mov r1, r5
+	bl FS_GetOverlayFileID
+	add r1, sp, #0x10
+	add r0, sp, #0x18
+	ldmia r1, {r1-r2}
+	bl FS_OpenFileFast
+_020D2564:
+	cmp r0, #0x0
+	addeq sp, sp, #0x64
+	moveq r0, #0x0
+	ldmeqia sp!, {r4-r5,lr}
+	bxeq lr
+	ldr r1, [sp, #0x3c]
+	add r0, sp, #0x18
+	str r1, [r5, #0x24]
+	ldr r2, [sp, #0x40]
+	ldr r1, [sp, #0x3c]
+	sub r1, r2, r1
+	str r1, [r5, #0x28]
+	bl FS_CloseFile
+	add sp, sp, #0x64
+	mov r0, #0x1
+	ldmia sp!, {r4-r5,lr}
+	bx lr
+_020D25A8:
+	ldr r1, _020D25F4 ; =0x027FFE50
+	ldr ip, _020D25F8 ; =0x027FFE58
+	ldr r0, [r1, #0x0]
+	ldr r3, _020D25FC ; =0x021D5414
+	str r0, [sp, #0x0]
+	ldr r1, [r1, #0x4]
+	mov r0, r5
+	str r1, [sp, #0x4]
+	ldr r5, [r12, #0x0]
+	mov r1, r4
+	str r5, [sp, #0x8]
+	ldr r4, [r12, #0x4]
+	str r4, [sp, #0xc]
+	bl FSi_LoadOverlayInfoCore
+	add sp, sp, #0x64
+	ldmia sp!, {r4-r5,lr}
+	bx lr
+	.balign 4
+_020D25EC: .word 0x021D5404
+_020D25F0: .word 0x021D540C
+_020D25F4: .word 0x027FFE50
+_020D25F8: .word 0x027FFE58
+_020D25FC: .word 0x021D5414
+
+	arm_func_start FSi_LoadOverlayInfoCore
+FSi_LoadOverlayInfoCore: ; 0x020D2600
+	stmdb sp!, {r4-r9,lr}
+	sub sp, sp, #0x54
+	movs r9, r1
+	ldreq r5, [sp, #0x74]
+	ldreq r6, [sp, #0x70]
+	ldrne r5, [sp, #0x7c]
+	ldrne r6, [sp, #0x78]
+	mov r7, r2, lsl #0x5
+	cmp r7, r5
+	mov r4, r0
+	mov r8, r3
+	addcs sp, sp, #0x54
+	movcs r0, #0x0
+	ldmcsia sp!, {r4-r9,lr}
+	bxcs lr
+	add r0, sp, #0xc
+	bl FS_InitFile
+	mvn r12, #0x0
+	add r0, sp, #0xc
+	mov r1, r8
+	add r2, r6, r7
+	add r3, r6, r5
+	str r12, [sp, #0x0]
+	bl FS_OpenFileDirect
+_020D2660:
+	cmp r0, #0
+	addeq sp, sp, #0x54
+	moveq r0, #0
+	ldmeqia sp!, {r4-r9, lr}
+	bxeq lr
+	add r0, sp, #12
+	mov r1, r4
+	mov r2, #32
+	bl FS_ReadFile
+	cmp r0, #32
+	beq _020D26A4
+	add r0, sp, #12
+	bl FS_CloseFile
+	add sp, sp, #0x54
+	mov r0, #0x0
+	ldmia sp!, {r4-r9, lr}
+	bx lr
+_020D26A4:
+	add r0, sp, #0xC
+	bl FS_CloseFile
+	add r0, sp, #0x4
+	mov r1, r4
+	str r9, [r4, #0x20]
+	bl FS_GetOverlayFileID
+	add r1, sp, #0x4
+	add r0, sp, #0xC
+	ldmia r1, {r1, r2}
+	bl FS_OpenFileFast
+	cmp r0, #0x0
+	addeq sp, sp, #0x54
+	moveq r0, #0x0
+	ldmeqia sp!, {r4-r9, lr}
+	bxeq lr
+	ldr r1, [sp, #0x30]
+	add r0, sp, #0xC
+	str r1, [r4, #0x24]
+	ldr r2, [sp, #0x34]
+	ldr r1, [sp, #0x30]
+	sub r1, r2, r1
+	str r1, [r4, #0x28]
+	bl FS_CloseFile
+	mov r0, #0x1
+	add sp, sp, #0x54
+	ldmia sp!, {r4-r9, lr}
+	bx lr
+
+	arm_func_start FS_GetOverlayFileID
+FS_GetOverlayFileID: ; 0x020D2710
+	sub sp, sp, #0x8
+	ldr r2, _020D2734 ; =0x021D5414
+	str r2, [sp, #0x0]
+	ldr r1, [r1, #0x18]
+	str r1, [sp, #0x4]
+	str r2, [r0, #0x0]
+	str r1, [r0, #0x4]
+	add sp, sp, #0x8
+	bx lr
+	.balign 4
+_020D2734: .word 0x021D5414
+
+	arm_func_start FS_ClearOverlayImage
+FS_ClearOverlayImage: ; 0x020D2738
+	stmdb sp!, {r4-r6,lr}
+	ldr r5, [r0, #0x8]
+	ldr r1, [r0, #0xc]
+	ldr r6, [r0, #0x4]
+	add r4, r5, r1
+	mov r0, r6
+	mov r1, r4
+	bl IC_InvalidateRange
+	mov r0, r6
+	mov r1, r4
+	bl DC_InvalidateRange
+	add r0, r6, r5
+	sub r2, r4, r5
+	mov r1, #0x0
+	bl MI_CpuFill8
+	ldmia sp!, {r4-r6,lr}
+	bx lr
+
+	arm_func_start FSi_GetOverlayBinarySize
+FSi_GetOverlayBinarySize: ; 0x020D277C
+	ldrb r1, [r0, #0x1f]
+	ands r1, r1, #0x1
+	ldrne r0, [r0, #0x1c]
+	movne r0, r0, lsl #0x8
+	movne r0, r0, lsr #0x8
+	ldreq r0, [r0, #0x8]
+	bx lr
diff --git a/arm9/asm/FS_rom.s b/arm9/asm/FS_rom.s
new file mode 100644
index 00000000..61a7c521
--- /dev/null
+++ b/arm9/asm/FS_rom.s
@@ -0,0 +1,246 @@
+	.include "asm/macros.inc"
+	.include "global.inc"
+	.section .text
+
+	arm_func_start FS_TryLoadTable
+FS_TryLoadTable: ; 0x020D1D10
+	ldr ip, _020D1D28 ; =FUN_020D0D84
+	mov r3, r0
+	mov r2, r1
+	ldr r0, _020D1D2C ; =0x021D5414
+	mov r1, r3
+	bx r12
+	.balign 4
+_020D1D28: .word FUN_020D0D84
+_020D1D2C: .word 0x021D5414
+
+	arm_func_start FS_SetDefaultDMA
+FS_SetDefaultDMA: ; 0x020D1D30
+	stmdb sp!, {r4-r6,lr}
+	mov r6, r0
+	bl OS_DisableInterrupts
+	mov r5, r0
+	ldr r1, _020D1D7C ; =0x021D5400
+	ldr r0, _020D1D80 ; =0x021D5414
+	ldr r4, [r1, #0x0]
+	bl FS_SuspendArchive
+	ldr r1, _020D1D7C ; =0x021D5400
+	cmp r0, #0x0
+	str r6, [r1, #0x0]
+	beq _020D1D68
+	ldr r0, _020D1D80 ; =0x021D5414
+	bl FS_ResumeArchive
+_020D1D68:
+	mov r0, r5
+	bl OS_RestoreInterrupts
+	mov r0, r4
+	ldmia sp!, {r4-r6,lr}
+	bx lr
+	.balign 4
+_020D1D7C: .word 0x021D5400
+_020D1D80: .word 0x021D5414
+
+	arm_func_start FSi_InitRom
+FSi_InitRom: ; 0x020D1D84
+	stmdb sp!, {r4-r5,lr}
+	sub sp, sp, #0x14
+	ldr r1, _020D1EE8 ; =0x021D5400
+	str r0, [r1, #0x0]
+	bl OS_GetLockID
+	ldr r3, _020D1EEC ; =0x021D53FC
+	ldr r2, _020D1EF0 ; =0x021D5404
+	mov r12, #0x0
+	ldr r1, _020D1EF4 ; =0x021D540C
+	str r0, [r3, #0x0]
+	str r12, [r2, #0x0]
+	str r12, [r2, #0x4]
+	str r12, [r1, #0x0]
+	str r12, [r1, #0x4]
+	bl CARD_Init
+	ldr r0, _020D1EF8 ; =0x021D5414
+	bl FS_InitArchive
+	ldr r0, _020D1EF8 ; =0x021D5414
+	ldr r1, _020D1EFC ; =0x02106830
+	mov r2, #0x3
+	bl FS_RegisterArchiveName
+	ldr r0, _020D1F00 ; =0x027FFC40
+	ldrh r0, [r0, #0x0]
+	cmp r0, #0x2
+	bne _020D1E4C
+	ldr ip, _020D1EF0 ; =0x021D5404
+	mvn r2, #0x0
+	ldr r3, _020D1EF4 ; =0x021D540C
+	mov lr, #0x0
+	ldr r0, _020D1EF8 ; =0x021D5414
+	ldr r1, _020D1F04 ; =FSi_EmptyArchiveProc
+	str r2, [r12, #0x0]
+	str lr, [r12, #0x4]
+	str r2, [r3, #0x0]
+	str lr, [r3, #0x4]
+	bl FS_SetArchiveProc
+	mov r1, #0x0
+	str r1, [sp, #0x0]
+	ldr r0, _020D1F08 ; =FSi_ReadDummyCallback
+	str r1, [sp, #0x4]
+	str r0, [sp, #0x8]
+	ldr ip, _020D1F0C ; =FSi_WriteDummyCallback
+	ldr r0, _020D1EF8 ; =0x021D5414
+	mov r2, r1
+	mov r3, r1
+	str r12, [sp, #0xc]
+	bl FS_LoadArchive
+	add sp, sp, #0x14
+	ldmia sp!, {r4-r5,lr}
+	bx lr
+_020D1E4C:
+	ldr r5, _020D1F10 ; =0x027FFE40
+	ldr r0, _020D1EF8 ; =0x021D5414
+	ldr r1, _020D1F14 ; =FSi_RomArchiveProc
+	ldr r2, _020D1F18 ; =0x00000602
+	ldr r4, _020D1F1C ; =0x027FFE48
+	bl FS_SetArchiveProc
+	ldr r1, [r5, #0x0]
+	mvn r0, #0x0
+	cmp r1, r0
+	addeq sp, sp, #0x14
+	ldmeqia sp!, {r4-r5,lr}
+	bxeq lr
+	cmp r1, #0x0
+	addeq sp, sp, #0x14
+	ldmeqia sp!, {r4-r5,lr}
+	bxeq lr
+	ldr r2, [r4, #0x0]
+	cmp r2, r0
+	addeq sp, sp, #0x14
+	ldmeqia sp!, {r4-r5,lr}
+	bxeq lr
+	cmp r2, #0x0
+	addeq sp, sp, #0x14
+	ldmeqia sp!, {r4-r5,lr}
+	bxeq lr
+	str r1, [sp, #0x0]
+	ldr r0, [r5, #0x4]
+	ldr r1, _020D1F20 ; =FSi_ReadRomCallback
+	str r0, [sp, #0x4]
+	ldr r0, _020D1F0C ; =FSi_WriteDummyCallback
+	str r1, [sp, #0x8]
+	str r0, [sp, #0xc]
+	ldr r3, [r4, #0x4]
+	ldr r0, _020D1EF8 ; =0x021D5414
+	mov r1, #0x0
+	bl FS_LoadArchive
+	add sp, sp, #0x14
+	ldmia sp!, {r4-r5,lr}
+	bx lr
+	.balign 4
+_020D1EE8: .word 0x021D5400
+_020D1EEC: .word 0x021D53FC
+_020D1EF0: .word 0x021D5404
+_020D1EF4: .word 0x021D540C
+_020D1EF8: .word 0x021D5414
+_020D1EFC: .word 0x02106830
+_020D1F00: .word 0x027FFC40
+_020D1F04: .word FSi_EmptyArchiveProc
+_020D1F08: .word FSi_ReadDummyCallback
+_020D1F0C: .word FSi_WriteDummyCallback
+_020D1F10: .word 0x027FFE40
+_020D1F14: .word FSi_RomArchiveProc
+_020D1F18: .word 0x00000602
+_020D1F1C: .word 0x027FFE48
+_020D1F20: .word FSi_ReadRomCallback
+
+	arm_func_start FSi_EmptyArchiveProc
+FSi_EmptyArchiveProc: ; 0x020D1F24
+	mov r0, #0x4
+	bx lr
+
+	arm_func_start FSi_ReadDummyCallback
+FSi_ReadDummyCallback: ; 0x020D1F2C
+	mov r0, #0x1
+	bx lr
+
+	arm_func_start FSi_RomArchiveProc
+FSi_RomArchiveProc: ; 0x020D1F34
+	stmdb sp!, {lr}
+	sub sp, sp, #0x4
+	cmp r1, #0x1
+	beq _020D1FA0
+	cmp r1, #0x9
+	beq _020D1F58
+	cmp r1, #0xa
+	beq _020D1F7C
+	b _020D1FB0
+_020D1F58:
+	ldr r0, _020D1FC0 ; =0x021D53FC
+	ldr r0, [r0, #0x0]
+	mov r0, r0, lsl #0x10
+	mov r0, r0, lsr #0x10
+	bl CARD_LockRom
+	add sp, sp, #0x4
+	mov r0, #0x0
+	ldmia sp!, {lr}
+	bx lr
+_020D1F7C:
+	ldr r0, _020D1FC0 ; =0x021D53FC
+	ldr r0, [r0, #0x0]
+	mov r0, r0, lsl #0x10
+	mov r0, r0, lsr #0x10
+	bl CARD_UnlockRom
+	add sp, sp, #0x4
+	mov r0, #0x0
+	ldmia sp!, {lr}
+	bx lr
+_020D1FA0:
+	add sp, sp, #0x4
+	mov r0, #0x4
+	ldmia sp!, {lr}
+	bx lr
+_020D1FB0:
+	mov r0, #0x8
+	add sp, sp, #0x4
+	ldmia sp!, {lr}
+	bx lr
+	.balign 4
+_020D1FC0: .word 0x021D53FC
+
+	arm_func_start FSi_WriteDummyCallback
+FSi_WriteDummyCallback: ; 0x020D1FC4
+	mov r0, #0x1
+	bx lr
+
+	arm_func_start FSi_ReadRomCallback
+FSi_ReadRomCallback: ; 0x020D1FCC
+	stmdb sp!, {lr}
+	sub sp, sp, #0xc
+	ldr ip, _020D2010 ; =FSi_OnRomReadDone
+	mov lr, r1
+	str r12, [sp, #0x0]
+	str r0, [sp, #0x4]
+	mov r1, #0x1
+	ldr r0, _020D2014 ; =0x021D5400
+	str r1, [sp, #0x8]
+	mov r1, r2
+	ldr r0, [r0, #0x0]
+	mov r2, lr
+	bl CARDi_ReadRom
+	mov r0, #0x6
+	add sp, sp, #0xc
+	ldmia sp!, {lr}
+	bx lr
+	.balign 4
+_020D2010: .word FSi_OnRomReadDone
+_020D2014: .word 0x021D5400
+
+	arm_func_start FSi_OnRomReadDone
+FSi_OnRomReadDone: ; 0x020D2018
+	stmdb sp!, {r4,lr}
+	mov r4, r0
+	bl CARD_IsPulledOut
+_020D2024:
+	cmp r0, #0x0
+	movne r1, #0x5
+	moveq r1, #0x0
+	mov r0, r4
+	bl FS_NotifyArchiveAsyncEnd
+	ldmia sp!, {r4,lr}
+	bx lr
diff --git a/arm9/asm/libfs.s b/arm9/asm/libfs.s
deleted file mode 100644
index d9b791b8..00000000
--- a/arm9/asm/libfs.s
+++ /dev/null
@@ -1,3011 +0,0 @@
-	.include "asm/macros.inc"
-	.include "global.inc"
-	.section .text
-
-	arm_func_start FSi_TranslateCommand
-FSi_TranslateCommand:
-	stmdb sp!, {r4-r8,lr}
-	mov r8, r0
-	ldr r0, [r8, #0xc]
-	mov r7, r1
-	mov r1, #0x1
-	ldr r5, [r8, #0x8]
-	mov r4, r1, lsl r7
-	ands r0, r0, #0x4
-	moveq r1, #0x0
-	cmp r1, #0x0
-	ldrne r0, [r5, #0x1c]
-	orrne r0, r0, #0x200
-	strne r0, [r5, #0x1c]
-	ldreq r0, [r5, #0x1c]
-	orreq r0, r0, #0x100
-	streq r0, [r5, #0x1c]
-	ldr r0, [r5, #0x58]
-	ands r0, r0, r4
-	beq _020CFFE4
-	ldr r2, [r5, #0x54]
-	mov r0, r8
-	mov r1, r7
-	blx r2
-	mov r6, r0
-	cmp r6, #0x8
-	addls pc, pc, r6, lsl #0x2
-	b _020CFFE8
-_020CFFA0:
-	b _020CFFC4
-	b _020CFFC4
-	b _020CFFE8
-	b _020CFFE8
-	b _020CFFC4
-	b _020CFFE8
-	b _020CFFE8
-	b _020CFFE8
-	b _020CFFCC
-_020CFFC4:
-	str r6, [r8, #0x14]
-	b _020CFFE8
-_020CFFCC:
-	ldr r1, [r5, #0x58]
-	mvn r0, r4
-	and r0, r1, r0
-	str r0, [r5, #0x58]
-	mov r6, #0x7
-	b _020CFFE8
-_020CFFE4:
-	mov r6, #0x7
-_020CFFE8:
-	cmp r6, #0x7
-	bne _020D0004
-	ldr r1, _020D00AC ; =0x02103F80
-	mov r0, r8
-	ldr r1, [r1, r7, lsl #0x2]
-	blx r1
-	mov r6, r0
-_020D0004:
-	cmp r6, #0x6
-	bne _020D0060
-	ldr r0, [r8, #0xc]
-	ands r0, r0, #0x4
-	movne r0, #0x1
-	moveq r0, #0x0
-	cmp r0, #0x0
-	beq _020D00A0
-	bl OS_DisableInterrupts
-	ldr r1, [r5, #0x1c]
-	mov r4, r0
-	ands r0, r1, #0x200
-	beq _020D0050
-	add r6, r5, #0xc
-_020D003C:
-	mov r0, r6
-	bl OS_SleepThread
-	ldr r0, [r5, #0x1c]
-	ands r0, r0, #0x200
-	bne _020D003C
-_020D0050:
-	mov r0, r4
-	ldr r6, [r8, #0x14]
-	bl OS_RestoreInterrupts
-	b _020D00A0
-_020D0060:
-	ldr r0, [r8, #0xc]
-	ands r0, r0, #0x4
-	movne r0, #0x1
-	moveq r0, #0x0
-	cmp r0, #0x0
-	ldrne r0, [r5, #0x1c]
-	bicne r0, r0, #0x200
-	strne r0, [r5, #0x1c]
-	strne r6, [r8, #0x14]
-	bne _020D00A0
-	ldr r1, [r5, #0x1c]
-	mov r0, r8
-	bic r2, r1, #0x100
-	mov r1, r6
-	str r2, [r5, #0x1c]
-	bl FSi_ReleaseCommand
-_020D00A0:
-	mov r0, r6
-	ldmia sp!, {r4-r8,lr}
-	bx lr
-	.balign 4
-_020D00AC: .word 0x02103F80
-
-	arm_func_start FSi_ReleaseCommand
-FSi_ReleaseCommand:
-	stmdb sp!, {r4-r6,lr}
-	mov r6, r0
-	mov r5, r1
-	bl OS_DisableInterrupts
-	ldr r1, [r6, #0x0]
-	mov r4, r0
-	ldr r0, [r6, #0x4]
-	cmp r1, #0x0
-	strne r0, [r1, #0x4]
-	cmp r0, #0x0
-	strne r1, [r0, #0x0]
-	mov r0, #0x0
-	str r0, [r6, #0x0]
-	ldr r1, [r6, #0x0]
-	add r0, r6, #0x18
-	str r1, [r6, #0x4]
-	ldr r1, [r6, #0xc]
-	bic r1, r1, #0x4f
-	str r1, [r6, #0xc]
-	str r5, [r6, #0x14]
-	bl OS_WakeupThread
-	mov r0, r4
-	bl OS_RestoreInterrupts
-	ldmia sp!, {r4-r6,lr}
-	bx lr
-
-	arm_func_start FSi_CloseFileCommand
-FSi_CloseFileCommand: ; 0x020D0114
-	mov r0, #0x0
-	bx lr
-
-	arm_func_start FSi_OpenFileDirectCommand
-FSi_OpenFileDirectCommand: ; 0x020D011C
-	ldr r1, [r0, #0x30]
-	str r1, [r0, #0x24]
-	ldr r1, [r0, #0x30]
-	str r1, [r0, #0x2c]
-	ldr r1, [r0, #0x34]
-	str r1, [r0, #0x28]
-	ldr r1, [r0, #0x38]
-	str r1, [r0, #0x20]
-	mov r0, #0x0
-	bx lr
-
-	arm_func_start FSi_OpenFileFastCommand
-FSi_OpenFileFastCommand: ; 0x020D0144
-	stmdb sp!, {r4-r5,lr}
-	sub sp, sp, #0x14
-	mov r5, r0
-	ldr r1, [r5, #0x8]
-	ldr r4, [r5, #0x34]
-	ldr r0, [r1, #0x30]
-	mov r2, r4, lsl #0x3
-	cmp r2, r0
-	addcs sp, sp, #0x14
-	movcs r0, #0x1
-	ldmcsia sp!, {r4-r5,lr}
-	bxcs lr
-	str r1, [sp, #0x8]
-	ldr r1, [r1, #0x2c]
-	add r0, sp, #0x8
-	add r3, r1, r2
-	add r1, sp, #0x0
-	mov r2, #0x8
-	str r3, [sp, #0xc]
-	bl FSi_ReadTable
-_020D0194:
-	cmp r0, #0
-	addne sp, sp, #0x14
-	ldmneia sp!, {r4-r5,lr}
-	bxne lr
-	ldr r1, [sp]
-	mov r0, r5
-	str r1, [r5, #0x30]
-	ldr r2, [sp, #0x4]
-	mov r1, #7
-	str r2, [r5, #0x34]
-	str r4, [r5, #0x38]
-	bl FSi_TranslateCommand
-	add sp, sp, #0x14
-	ldmia sp!, {r4-r5,lr}
-	bx lr
-
-	arm_func_start FSi_GetPathCommand
-FSi_GetPathCommand: ; 0x020D01D0
-	stmdb sp!, {r4-r11,lr}
-	sub sp, sp, #0xe4
-	mov r4, r0
-	ldr r1, [r4, #0x8]
-	add r0, sp, #0x98
-	add r11, r4, #0x30
-	str r1, [sp, #0x0]
-	bl FS_InitFile
-	ldr r0, [r4, #0x8]
-	str r0, [sp, #0xa0]
-	ldr r0, [r4, #0xc]
-	ands r0, r0, #0x20
-	movne r0, #0x1
-	moveq r0, #0x0
-	cmp r0, #0x0
-	ldrneh r5, [r4, #0x24]
-	movne r4, #0x10000
-	bne _020D02BC
-	ldrh r0, [r11, #0x8]
-	ldr r4, [r4, #0x20]
-	cmp r0, #0x0
-	ldrneh r5, [r11, #0xa]
-	bne _020D02BC
-	mov r10, #0x0
-	mov r9, r10
-	mov r5, #0x10000
-	add r8, sp, #0x98
-	mov r6, #0x3
-	mov r7, #0x1
-_020D0244:
-	mov r0, r8
-	mov r1, r10
-	bl FSi_SeekDirDirect
-	add r2, sp, #0x4
-	cmp r10, #0x0
-	mov r0, r8
-	mov r1, r6
-	ldreq r9, [sp, #0xc4]
-	str r2, [sp, #0xc8]
-	str r7, [sp, #0xcc]
-	bl FSi_TranslateCommand
-_020D0270:
-	cmp r0, #0x0
-	bne _020D02A8
-_020D0278:
-	ldr r0, [sp, #0x10]
-	cmp r0, #0x0
-	bne _020D0294
-	ldr r0, [sp, #0x8]
-	cmp r0, r4
-	ldreqh r5, [sp, #0xbc]
-	beq _020D02A8
-_020D0294:
-	mov r0, r8
-	mov r1, r6
-	bl FSi_TranslateCommand
-	cmp r0, #0x0
-	beq _020D0278
-_020D02A8:
-	cmp r5, #0x10000
-	bne _020D02BC
-	add sl, sl, #0x1
-	cmp sl, r9
-	bcc _020D0244
-_020D02BC:
-	cmp r5, #0x10000
-	moveq r0, #0x0
-	streqh r0, [r11, #0x8]
-	addeq sp, sp, #0xe4
-	moveq r0, #0x1
-	ldmeqia sp!, {r4-r11,lr}
-	bxeq lr
-	ldrh r0, [r11, #0x8]
-	cmp r0, #0x0
-	bne _020D03B8
-	ldr r0, [sp, #0x0]
-	mov r1, #0x0
-	ldr r0, [r0, #0x0]
-	cmp r0, #0xff
-	addls r9, r1, #0x1
-	bls _020D0308
-	cmp r0, #0xff00
-	addls r9, r1, #0x2
-	addhi r9, r1, #0x3
-_020D0308:
-	cmp r4, #0x10000
-	ldrne r0, [sp, #0x14]
-	add r9, r9, #0x2
-	addne r9, r9, r0
-	mov r10, r5
-	cmp r5, #0x0
-	beq _020D03AC
-	add r0, sp, #0x98
-	mov r1, r5
-	bl FSi_SeekDirDirect
-	add r8, sp, #0x98
-	mov r6, #0x3
-	mov r7, #0x1
-_020D033C:
-	ldr r1, [sp, #0xc4]
-	mov r0, r8
-	bl FSi_SeekDirDirect
-	add r2, sp, #0x4
-	mov r0, r8
-	mov r1, r6
-	str r2, [sp, #0xc8]
-	str r7, [sp, #0xcc]
-	bl FSi_TranslateCommand
-_020D0360:
-	cmp r0, #0x0
-	bne _020D03A0
-_020D0368:
-	ldr r0, [sp, #0x10]
-	cmp r0, #0x0
-	beq _020D038C
-	ldrh r0, [sp, #0x8]
-	cmp r0, sl
-	ldreq r0, [sp, #0x14]
-	addeq r0, r0, #0x1
-	addeq r9, r9, r0
-	beq _020D03A0
-_020D038C:
-	mov r0, r8
-	mov r1, r6
-	bl FSi_TranslateCommand
-	cmp r0, #0x0
-	beq _020D0368
-_020D03A0:
-	ldrh sl, [sp, #0xbc]
-	cmp sl, #0x0
-	bne _020D033C
-_020D03AC:
-	add r0, r9, #0x1
-	strh r0, [r11, #0x8]
-	strh r5, [r11, #0xa]
-_020D03B8:
-	ldr r7, [r11, #0x0]
-	cmp r7, #0x0
-	addeq sp, sp, #0xe4
-	moveq r0, #0x0
-	ldmeqia sp!, {r4-r11,lr}
-	bxeq lr
-	ldrh r6, [r11, #0x8]
-	ldr r0, [r11, #0x4]
-	cmp r0, r6
-	addcc sp, sp, #0xe4
-	movcc r0, #0x1
-	ldmccia sp!, {r4-r11,lr}
-	bxcc lr
-	ldr r0, [sp, #0x0]
-	mov r9, #0x0
-	ldr r0, [r0, #0x0]
-	cmp r0, #0xff
-	movls r8, #0x1
-	bls _020D0410
-	cmp r0, #0xff00
-	movls r8, #0x2
-	movhi r8, #0x3
-_020D0410:
-	ldr r0, [sp, #0x0]
-	mov r1, r7
-	mov r2, r8
-	bl MI_CpuCopy8
-	add r1, r9, r8
-	ldr r0, _020D058C ; =0x0210682C
-	add r1, r7, r1
-	mov r2, #0x2
-	bl MI_CpuCopy8
-	add r0, sp, #0x98
-	mov r1, r5
-	bl FSi_SeekDirDirect
-	cmp r4, #0x10000
-	beq _020D04C4
-	add r3, sp, #0x4
-	mov r2, #0x0
-	add r0, sp, #0x98
-	mov r1, #0x3
-	str r3, [sp, #0xc8]
-	str r2, [sp, #0xcc]
-	bl FSi_TranslateCommand
-_020D0464:
-	cmp r0, #0x0
-	bne _020D04A0
-	add r9, sp, #0x98
-	mov r8, #0x3
-_020D0474:
-	ldr r0, [sp, #0x10]
-	cmp r0, #0x0
-	bne _020D048C
-	ldr r0, [sp, #0x8]
-	cmp r0, r4
-	beq _020D04A0
-_020D048C:
-	mov r0, r9
-	mov r1, r8
-	bl FSi_TranslateCommand
-	cmp r0, #0x0
-	beq _020D0474
-_020D04A0:
-	ldr r0, [sp, #0x14]
-	add r1, r7, r6
-	add r4, r0, #0x1
-	add r0, sp, #0x18
-	mov r2, r4
-	sub r1, r1, r4
-	bl MI_CpuCopy8
-	sub r6, r6, r4
-	b _020D04D4
-_020D04C4:
-	add r0, r7, r6
-	mov r1, #0x0
-	strb r1, [r0, #-0x1]
-	sub r6, r6, #0x1
-_020D04D4:
-	cmp r5, #0x0
-	beq _020D057C
-	add r10, sp, #0x98
-	add r11, sp, #0x4
-	mov r4, #0x3
-	mov r9, #0x0
-	mov r8, #0x2f
-_020D04F0:
-	ldr r1, [sp, #0xc4]
-	mov r0, r10
-	bl FSi_SeekDirDirect
-	add r2, r7, r6
-	mov r0, r10
-	mov r1, r4
-	str r11, [sp, #0xc8]
-	str r9, [sp, #0xcc]
-	strb r8, [r2, #-0x1]
-	sub r6, r6, #0x1
-	bl FSi_TranslateCommand
-_020D051C:
-	cmp r0, #0x0
-	bne _020D0570
-_020D0524:
-	ldr r0, [sp, #0x10]
-	cmp r0, #0x0
-	beq _020D055C
-	ldrh r0, [sp, #0x8]
-	cmp r0, r5
-	bne _020D055C
-	ldr r5, [sp, #0x14]
-	add r1, r7, r6
-	add r0, sp, #0x18
-	mov r2, r5
-	sub r1, r1, r5
-	bl MI_CpuCopy8
-	sub r6, r6, r5
-	b _020D0570
-_020D055C:
-	mov r0, sl
-	mov r1, r4
-	bl FSi_TranslateCommand
-	cmp r0, #0x0
-	beq _020D0524
-_020D0570:
-	ldrh r5, [sp, #0xbc]
-	cmp r5, #0x0
-	bne _020D04F0
-_020D057C:
-	mov r0, #0x0
-	add sp, sp, #0xe4
-	ldmia sp!, {r4-r11,lr}
-	bx lr
-	.balign 4
-_020D058C: .word 0x0210682C
-
-	arm_func_start FSi_FindPathCommand
-FSi_FindPathCommand: ; 0x020D0590
-	stmdb sp!, {r4-r11,lr}
-	sub sp, sp, #0x9c
-	mov r10, r0
-	ldr r2, [r10, #0x40]
-	ldr r9, [r10, #0x3c]
-	mov r1, #0x2
-	str r2, [sp, #0x0]
-	bl FSi_TranslateCommand
-	ldrb r1, [r9, #0x0]
-	cmp r1, #0x0
-	beq _020D0780
-	mov r0, #0x2
-	add r11, sp, #0x1c
-	mov r4, #0x3
-	mov r5, #0x1
-	mov r6, #0x0
-	str r0, [sp, #0x4]
-_020D05D4:
-	mov r7, r6
-	b _020D05E0
-_020D05DC:
-	add r7, r7, #0x1
-_020D05E0:
-	ldrb r8, [r9, r7]
-	mov r0, r6
-	cmp r8, #0x0
-	beq _020D0600
-	cmp r8, #0x2f
-	beq _020D0600
-	cmp r8, #0x5c
-	movne r0, r5
-_020D0600:
-	cmp r0, #0x0
-	bne _020D05DC
-	cmp r8, #0x0
-	bne _020D061C
-	ldr r0, [sp, #0x0]
-	cmp r0, #0x0
-	beq _020D0620
-_020D061C:
-	mov r8, r5
-_020D0620:
-	cmp r7, #0x0
-	addeq sp, sp, #0x9c
-	moveq r0, #0x1
-	ldmeqia sp!, {r4-r11,lr}
-	bxeq lr
-	cmp r1, #0x2e
-	bne _020D068C
-	cmp r7, #0x1
-	addeq r9, r9, #0x1
-	beq _020D0764
-	ldrb r0, [r9, #0x1]
-	cmp r7, #0x2
-	moveq r1, r5
-	movne r1, r6
-	cmp r0, #0x2e
-	moveq r0, r5
-	movne r0, r6
-	ands r0, r1, r0
-	beq _020D068C
-	ldrh r0, [r10, #0x24]
-	cmp r0, #0x0
-	beq _020D0684
-	ldr r1, [r10, #0x2c]
-	mov r0, r10
-	bl FSi_SeekDirDirect
-_020D0684:
-	add r9, r9, #0x2
-	b _020D0764
-_020D068C:
-	cmp r7, #0x7f
-	addgt sp, sp, #0x9c
-	movgt r0, #0x1
-	ldmgtia sp!, {r4-r11,lr}
-	bxgt lr
-	add r0, sp, #0x8
-	str r0, [r10, #0x30]
-	str r6, [r10, #0x34]
-_020D06AC:
-	mov r0, r10
-	mov r1, r4
-	bl FSi_TranslateCommand
-_020D06B8:
-	cmp r0, #0x0
-	addne sp, sp, #0x9c
-	movne r0, #0x1
-	ldmneia sp!, {r4-r11,lr}
-	bxne lr
-	ldr r0, [sp, #0x14]
-	cmp r8, r0
-	bne _020D06AC
-	ldr r0, [sp, #0x18]
-	cmp r7, r0
-	bne _020D06AC
-	mov r0, r9
-	mov r1, fp
-	mov r2, r7
-	bl FSi_StrNICmp
-	cmp r0, #0x0
-	bne _020D06AC
-	cmp r8, #0x0
-	beq _020D0728
-	add r0, sp, #0x8
-	add r3, sl, #0x30
-	ldmia r0, {r0, r1, r2}
-	stmia r3, {r0, r1, r2}
-	ldr r1, [sp, #0x4]
-	mov r0, sl
-	add r9, r9, r7
-	bl FSi_TranslateCommand
-	b _020D0764
-_020D0728:
-	ldr r0, [sp]
-	cmp r0, #0x0
-	addne sp, sp, #0x9c
-	movne r0, #0x1
-	ldmneia sp!, {r4-r11,lr}
-	bxne lr
-	ldr r3, [sl, #0x44]
-	ldr r2, [sp, #0x8]
-	ldr r1, [sp, #0xC]
-	add sp, sp, #0x9c
-	str r2, [r3]
-	str r1, [r3, #0x4]
-	mov r0, #0x0
-	ldmia sp!, {r4-r11,lr}
-	bx lr
-_020D0764:
-	ldrb r0, [r9, #0x0]
-	cmp r0, #0x0
-	movne r0, r5
-	moveq r0, r6
-	ldrb r1, [r9, r0]!
-	cmp r1, #0x0
-	bne _020D05D4
-_020D0780:
-	ldr r0, [sp, #0x0]
-	cmp r0, #0x0
-	moveq r0, #0x1
-	addne r0, r10, #0x20
-	ldrne r3, [r10, #0x44]
-	ldmneia r0, {r0-r2}
-	stmneia r3, {r0-r2}
-	movne r0, #0x0
-	add sp, sp, #0x9c
-	ldmia sp!, {r4-r11,lr}
-	bx lr
-
-	arm_func_start FSi_ReadDirCommand
-FSi_ReadDirCommand: ; 0x020D07AC
-	stmdb sp!, {r4-r5,lr}
-	sub sp, sp, #0xc
-	mov r5, r0
-	ldr r4, [r5, #0x30]
-	ldr r1, [r5, #0x8]
-	add r0, sp, #0x4
-	str r1, [sp, #0x4]
-	ldr r3, [r5, #0x28]
-	add r1, sp, #0x0
-	mov r2, #0x1
-	str r3, [sp, #0x8]
-	bl FSi_ReadTable
-_020D07DC:
-	cmp r0, #0x0
-	addne sp, sp, #0xC
-	ldmneia sp!, {r4-r5,lr}
-	bxne lr
-	ldrb r1, [sp]
-	and r2, r1, #0x7F
-	mov r1, r1, asr #0x7
-	str r2, [r4, #0x10]
-	and r1, r1, #0x1
-	str r1, [r4, #0xC]
-	ldr r2, [r4, #0x10]
-	cmp r2, #0x0
-	addeq sp, sp, #0xC
-	moveq r0, #0x1
-	ldmeqia sp!, {r4-r5,lr}
-	bxeq lr
-	ldr r1, [r5, #0x34]
-	cmp r1, #0x0
-	bne _020D0858
-	add r0, sp, #0x4
-	add r1, r4, #0x14
-	bl FSi_ReadTable
-	cmp r0, #0x0
-	addne sp, sp, #0xC
-	ldmneia sp!, {r4-r5,lr}
-	bxne lr
-	ldr r1, [r4, #0x10]
-	mov r2, #0x0
-	add r1, r4, r1
-	strb r2, [r1, #0x14]
-	b _020D0864
-_020D0858:
-	ldr r1, [sp, #0x8]
-	add r1, r1, r2
-	str r1, [sp, #0x8]
-_020D0864:
-	ldr r1, [r4, #0xC]
-	cmp r1, #0x0
-	beq _020D08B8
-	add r0, sp, #0x4
-	add r1, sp, #0x2
-	mov r2, #0x2
-	bl FSi_ReadTable
-	cmp r0, #0x0
-	addne sp, sp, #0xC
-	ldmneia sp!, {r4-r5,lr}
-	bxne lr
-	ldr r2, [r5, #0x8]
-	ldr r1, _020D08E8
-	str r2, [r4]
-	ldrh r3, [sp, #0x2]
-	mov r2, #0x0
-	and r1, r3, r1
-	strh r1, [r4, #0x4]
-	strh r2, [r4, #0x6]
-	str r2, [r4, #0x8]
-	b _020D08D4
-_020D08B8:
-	ldr r1, [r5, #0x8]
-	str r1, [r4]
-	ldrh r1, [r5, #0x26]
-	str r1, [r4, #0x4]
-	ldrh r1, [r5, #0x26]
-	add r1, r1, #0x1
-	strh r1, [r5, #0x26]
-_020D08D4:
-	ldr r1, [sp, #0x8]
-	str r1, [r5, #0x28]
-	add sp, sp, #0xC
-	ldmia sp!, {r4-r5,lr}
-	bx lr
-_020D08E8: .word 0x00000FFF
-
-	arm_func_start FSi_SeekDirCommand
-FSi_SeekDirCommand: ; 0x020D08EC
-	stmdb sp!, {r4-r6,lr}
-	sub sp, sp, #0x10
-	mov r6, r0
-	ldr r5, [r6, #0x8]
-	add r4, r6, #0x30
-	str r5, [sp, #0x8]
-	ldrh r1, [r4, #0x4]
-	ldr r2, [r5, #0x34]
-	add r0, sp, #0x8
-	add r3, r2, r1, lsl #0x3
-	add r1, sp, #0x0
-	mov r2, #0x8
-	str r3, [sp, #0xc]
-	bl FSi_ReadTable
-	movs r3, r0
-	bne _020D0978
-	add r12, r6, #0x20
-	ldmia r4, {r0-r2}
-	stmia r12, {r0-r2}
-	ldrh r0, [r4, #0x6]
-	cmp r0, #0x0
-	bne _020D0968
-	ldr r0, [r4, #0x8]
-	cmp r0, #0x0
-	bne _020D0968
-	ldrh r0, [sp, #0x4]
-	strh r0, [r6, #0x26]
-	ldr r1, [r5, #0x34]
-	ldr r0, [sp, #0x0]
-	add r0, r1, r0
-	str r0, [r6, #0x28]
-_020D0968:
-	ldrh r1, [sp, #0x6]
-	ldr r0, _020D0988 ; =0x00000FFF
-	and r0, r1, r0
-	str r0, [r6, #0x2c]
-_020D0978:
-	mov r0, r3
-	add sp, sp, #0x10
-	ldmia sp!, {r4-r6,lr}
-	bx lr
-	.balign 4
-_020D0988: .word 0x00000FFF
-
-	arm_func_start FSi_WriteFileCommand
-FSi_WriteFileCommand: ; 0x020D098C
-	stmdb sp!, {lr}
-	sub sp, sp, #0x4
-	ldr r2, [r0, #0x2c]
-	ldr r3, [r0, #0x38]
-	ldr lr, [r0, #0x8]
-	ldr r1, [r0, #0x30]
-	add r12, r2, r3
-	str r12, [r0, #0x2c]
-	ldr r12, [lr, #0x4c]
-	mov r0, lr
-	blx r12
-	add sp, sp, #0x4
-	ldmia sp!, {lr}
-	bx lr
-
-	arm_func_start FSi_ReadFileCommand
-FSi_ReadFileCommand: ; 0x020D09C4
-	stmdb sp!, {lr}
-	sub sp, sp, #0x4
-	ldr r2, [r0, #0x2c]
-	ldr r3, [r0, #0x38]
-	ldr lr, [r0, #0x8]
-	ldr r1, [r0, #0x30]
-	add r12, r2, r3
-	str r12, [r0, #0x2c]
-	ldr r12, [lr, #0x48]
-	mov r0, lr
-	blx r12
-	add sp, sp, #0x4
-	ldmia sp!, {lr}
-	bx lr
-
-	arm_func_start FSi_SeekDirDirect
-FSi_SeekDirDirect: ; 0x020D09FC
-	ldr r3, [r0, #0xc]
-	mov r2, #0x0
-	orr r3, r3, #0x4
-	str r3, [r0, #0xc]
-	ldr r3, [r0, #0x8]
-	ldr ip, _020D0A2C ; =FSi_TranslateCommand
-	str r3, [r0, #0x30]
-	str r2, [r0, #0x38]
-	strh r2, [r0, #0x36]
-	strh r1, [r0, #0x34]
-	mov r1, #0x2
-	bx r12
-	.balign 4
-_020D0A2C: .word FSi_TranslateCommand
-
-	arm_func_start FSi_ReadTable
-FSi_ReadTable:
-	stmdb sp!, {r4-r8,lr}
-	mov r7, r0
-	ldr r5, [r7, #0x0]
-	mov r6, r2
-	ldr r2, [r5, #0x1c]
-	mov r0, r5
-	orr r2, r2, #0x200
-	str r2, [r5, #0x1c]
-	ldr r2, [r7, #0x4]
-	ldr r4, [r5, #0x50]
-	mov r3, r6
-	blx r4
-	cmp r0, #0x0
-	beq _020D0A7C
-	cmp r0, #0x1
-	beq _020D0A7C
-	cmp r0, #0x6
-	beq _020D0A8C
-	b _020D0AC8
-_020D0A7C:
-	ldr r1, [r5, #0x1c]
-	bic r1, r1, #0x200
-	str r1, [r5, #0x1c]
-	b _020D0AC8
-_020D0A8C:
-	bl OS_DisableInterrupts
-	ldr r1, [r5, #0x1c]
-	mov r4, r0
-	ands r0, r1, #0x200
-	beq _020D0AB8
-	add r8, r5, #0xc
-_020D0AA4:
-	mov r0, r8
-	bl OS_SleepThread
-	ldr r0, [r5, #0x1c]
-	ands r0, r0, #0x200
-	bne _020D0AA4
-_020D0AB8:
-	mov r0, r4
-	bl OS_RestoreInterrupts
-	ldr r0, [r5, #0x24]
-	ldr r0, [r0, #0x14]
-_020D0AC8:
-	ldr r1, [r7, #0x4]
-	add r1, r1, r6
-	str r1, [r7, #0x4]
-	ldmia sp!, {r4-r8,lr}
-	bx lr
-
-	arm_func_start FSi_StrNICmp
-FSi_StrNICmp: ; 0x020D0ADC
-	stmdb sp!, {lr}
-	sub sp, sp, #0x4
-	cmp r2, #0x0
-	mov lr, #0x0
-	bls _020D0B30
-_020D0AF0:
-	ldrb r12, [r0, lr]
-	ldrb r3, [r1, lr]
-	sub r12, r12, #0x41
-	cmp r12, #0x19
-	sub r3, r3, #0x41
-	addls r12, r12, #0x20
-	cmp r3, #0x19
-	addls r3, r3, #0x20
-	cmp r12, r3
-	addne sp, sp, #0x4
-	subne r0, r12, r3
-	ldmneia sp!, {lr}
-	bxne lr
-	add lr, lr, #0x1
-	cmp lr, r2
-	blo _020D0AF0
-_020D0B30:
-	mov r0, #0x0
-	add sp, sp, #0x4
-	ldmia sp!, {lr}
-	bx lr
-
-	arm_func_start FS_NotifyArchiveAsyncEnd
-FS_NotifyArchiveAsyncEnd: ; 0x020D0B40
-	stmdb sp!, {r4-r6,lr}
-	mov r4, r0
-	ldr r0, [r4, #0x1c]
-	mov r6, r1
-	ands r0, r0, #0x100
-	beq _020D0B8C
-	ldr r2, [r4, #0x1c]
-	ldr r0, [r4, #0x24]
-	bic r2, r2, #0x100
-	str r2, [r4, #0x1c]
-	bl FSi_ReleaseCommand
-	mov r0, r4
-	bl FSi_NextCommand
-_020D0B74:
-	cmp r0, #0x0
-	ldmeqia sp!, {r4-r6,lr}
-	bxeq lr
-	bl FSi_ExecuteAsyncCommand
-	ldmia sp!, {r4-r6,lr}
-	bx lr
-_020D0B8C:
-	ldr r5, [r4, #0x24]
-	bl OS_DisableInterrupts
-	str r6, [r5, #0x14]
-	ldr r1, [r4, #0x1c]
-	mov r5, r0
-	bic r1, r1, #0x200
-	add r0, r4, #0xc
-	str r1, [r4, #0x1c]
-	bl OS_WakeupThread
-	mov r0, r5
-	bl OS_RestoreInterrupts
-	ldmia sp!, {r4-r6,lr}
-	bx lr
-
-	arm_func_start FS_SetArchiveProc
-FS_SetArchiveProc: ; 0x020D0BC0
-	cmp r2, #0x0
-	moveq r1, #0x0
-	beq _020D0BD4
-	cmp r1, #0x0
-	moveq r2, #0x0
-_020D0BD4:
-	str r1, [r0, #0x54]
-	str r2, [r0, #0x58]
-	bx lr
-
-	arm_func_start FS_ResumeArchive
-FS_ResumeArchive:
-	stmdb sp!, {r4-r7,lr}
-	sub sp, sp, #0x4
-	mov r4, r0
-	mov r6, #0x0
-	bl OS_DisableInterrupts
-	ldr r1, [r4, #0x1c]
-	mov r5, r0
-	ands r0, r1, #0x8
-	movne r0, #0x1
-	moveq r0, r6
-	cmp r0, #0x0
-	moveq r7, #0x1
-	movne r7, #0x0
-	cmp r7, #0x0
-	bne _020D0C34
-	ldr r1, [r4, #0x1c]
-	mov r0, r4
-	bic r1, r1, #0x8
-	str r1, [r4, #0x1c]
-	bl FSi_NextCommand
-	mov r6, r0
-_020D0C34:
-	mov r0, r5
-	bl OS_RestoreInterrupts
-_020D0C3C:
-	cmp r6, #0x0
-	beq _020D0C4C
-	mov r0, r6
-	bl FSi_ExecuteAsyncCommand
-_020D0C4C:
-	mov r0, r7
-	add sp, sp, #0x4
-	ldmia sp!, {r4-r7, lr}
-	bx lr
-
-	arm_func_start FS_SuspendArchive
-FS_SuspendArchive: ; 0x020D0C5C
-	stmdb sp!, {r4-r7,lr}
-	sub sp, sp, #0x4
-	mov r6, r0
-	bl OS_DisableInterrupts
-	ldr r1, [r6, #0x1c]
-	mov r4, r0
-	ands r0, r1, #0x8
-	movne r0, #0x1
-	moveq r0, #0x0
-	cmp r0, #0x0
-	moveq r5, #0x1
-	movne r5, #0x0
-	cmp r5, #0x0
-	beq _020D0CD4
-	ldr r0, [r6, #0x1c]
-	ands r0, r0, #0x10
-	beq _020D0CC8
-	ldr r0, [r6, #0x1c]
-	orr r0, r0, #0x40
-	str r0, [r6, #0x1c]
-	add r7, r6, #0x14
-_020D0CB0:
-	mov r0, r7
-	bl OS_SleepThread
-	ldr r0, [r6, #0x1c]
-	ands r0, r0, #0x40
-	bne _020D0CB0
-	b _020D0CD4
-_020D0CC8:
-	ldr r0, [r6, #0x1c]
-	orr r0, r0, #0x8
-	str r0, [r6, #0x1c]
-_020D0CD4:
-	mov r0, r4
-	bl OS_RestoreInterrupts
-	mov r0, r5
-	add sp, sp, #0x4
-	ldmia sp!, {r4-r7,lr}
-	bx lr
-
-	arm_func_start FS_UnloadArchiveTables
-FS_UnloadArchiveTables: ; 0x020D0CEC
-	stmdb sp!, {r4-r5,lr}
-	sub sp, sp, #0x4
-	mov r5, r0
-	ldr r0, [r5, #0x1c]
-	mov r4, #0x0
-	ands r0, r0, #0x2
-	movne r0, #0x1
-	moveq r0, r4
-	cmp r0, #0x0
-	beq _020D0D74
-	mov r0, r5
-	bl FS_SuspendArchive
-	ldr r1, [r5, #0x1c]
-	ands r1, r1, #0x4
-	movne r1, #0x1
-	moveq r1, #0x0
-	cmp r1, #0x0
-	beq _020D0D64
-	ldr r2, [r5, #0x1c]
-	mov r1, #0x0
-	bic r2, r2, #0x4
-	str r2, [r5, #0x1c]
-	ldr r4, [r5, #0x44]
-	str r1, [r5, #0x44]
-	ldr r1, [r5, #0x3c]
-	str r1, [r5, #0x2c]
-	ldr r1, [r5, #0x40]
-	str r1, [r5, #0x34]
-	ldr r1, [r5, #0x48]
-	str r1, [r5, #0x50]
-_020D0D64:
-	cmp r0, #0x0
-	beq _020D0D74
-	mov r0, r5
-	bl FS_ResumeArchive
-_020D0D74:
-	mov r0, r4
-	add sp, sp, #0x4
-	ldmia sp!, {r4-r5,lr}
-	bx lr
-
-	arm_func_start FUN_020D0D84
-FUN_020D0D84: ; 0x020D0D84
-	stmdb sp!, {r4-r7,lr}
-	sub sp, sp, #0x4c
-	mov r7, r0
-	ldr r3, [r7, #0x30]
-	ldr r0, [r7, #0x38]
-	mov r6, r1
-	add r0, r3, r0
-	add r0, r0, #0x20
-	add r0, r0, #0x1f
-	bic r5, r0, #0x1f
-	cmp r5, r2
-	bhi _020D0E9C
-	add r1, r6, #0x1f
-	add r0, sp, #0x4
-	bic r4, r1, #0x1f
-	bl FS_InitFile
-	ldr r2, [r7, #0x2c]
-	mvn r0, #0x0
-	str r0, [sp, #0x0]
-	ldr r3, [r7, #0x30]
-	add r0, sp, #0x4
-	mov r1, r7
-	add r3, r2, r3
-	bl FS_OpenFileDirect
-_020D0DE4:
-	cmp r0, #0x0
-	beq _020D0E1C
-	ldr r2, [r7, #0x30]
-	add r0, sp, #0x4
-	mov r1, r4
-	bl FS_ReadFile
-	cmp r0, #0x0
-	bge _020D0E14
-	ldr r2, [r7, #0x30]
-	mov r0, r4
-	mov r1, #0x0
-	bl MI_CpuFill8
-_020D0E14:
-	add r0, sp, #0x4
-	bl FS_CloseFile
-_020D0E1C:
-	str r4, [r7, #0x2C]
-	ldr ip, [r7, #0x30]
-	ldr r2, [r7, #0x34]
-	mvn r0, #0x0
-	str r0, [sp]
-	ldr r3, [r7, #0x38]
-	add r0, sp, #0x4
-	mov r1, r7
-	add r3, r2, r3
-	add r4, r4, ip
-	bl FS_OpenFileDirect
-	cmp r0, #0x0
-	beq _020D0E80
-	ldr r2, [r7, #0x38]
-	add r0, sp, #0x4
-	mov r1, r4
-	bl FS_ReadFile
-	cmp r0, #0x0
-	bge _020D0E78
-	ldr r2, [r7, #0x38]
-	mov r0, r4
-	mov r1, #0x0
-	bl MI_CpuFill8
-_020D0E78:
-	add r0, sp, #0x4
-	bl FS_CloseFile
-_020D0E80:
-	str r4, [r7, #0x34]
-	ldr r0, _020D0EAC
-	str r6, [r7, #0x44]
-	str r0, [r7, #0x50]
-	ldr r0, [r7, #0x1C]
-	orr r0, r0, #0x4
-	str r0, [r7, #0x1C]
-_020D0E9C:
-	mov r0, r5
-	add sp, sp, #0x4C
-	ldmia sp!, {r4-r7,lr}
-	bx lr
-_020D0EAC:
-	.word FSi_ReadMemoryCore
-
-	arm_func_start FUN_020D0EB0
-FUN_020D0EB0: ; 0x020D0EB0
-	stmdb sp!, {r4-r8,lr}
-	mov r5, r0
-	bl OS_DisableInterrupts
-	ldr r1, [r5, #0x1c]
-	mov r4, r0
-	ands r0, r1, #0x2
-	movne r0, #0x1
-	moveq r0, #0x0
-	cmp r0, #0x0
-	beq _020D0F64
-	mov r0, r5
-	ldr r1, [r5, #0x1c]
-	bl FS_SuspendArchive
-	ldr r1, [r5, #0x1c]
-	mov r7, r0
-	orr r0, r1, #0x80
-	str r0, [r5, #0x1c]
-	ldr r0, [r5, #0x24]
-	cmp r0, #0x0
-	beq _020D0F1C
-	mov r6, #0x3
-_020D0F04:
-	ldr r8, [r0, #0x4]
-	mov r1, r6
-	bl FSi_ReleaseCommand
-	mov r0, r8
-	cmp r8, #0x0
-	bne _020D0F04
-_020D0F1C:
-	mov r0, #0x0
-	str r0, [r5, #0x24]
-	cmp r7, #0x0
-	beq _020D0F34
-	mov r0, r5
-	bl FS_ResumeArchive
-_020D0F34:
-	mov r0, #0x0
-	str r0, [r5, #0x28]
-	str r0, [r5, #0x2c]
-	str r0, [r5, #0x30]
-	str r0, [r5, #0x34]
-	str r0, [r5, #0x38]
-	str r0, [r5, #0x40]
-	ldr r0, [r5, #0x40]
-	str r0, [r5, #0x3c]
-	ldr r0, [r5, #0x1c]
-	bic r0, r0, #0xa2
-	str r0, [r5, #0x1c]
-_020D0F64:
-	mov r0, r4
-	bl OS_RestoreInterrupts
-	mov r0, #0x1
-	ldmia sp!, {r4-r8,lr}
-	bx lr
-
-	arm_func_start FS_LoadArchive
-FS_LoadArchive: ; 0x020D0F78
-	str r1, [r0, #0x28]
-	str r3, [r0, #0x30]
-	str r2, [r0, #0x3c]
-	ldr r1, [r0, #0x3c]
-	ldr r2, [sp, #0x4]
-	str r1, [r0, #0x2c]
-	str r2, [r0, #0x38]
-	ldr r1, [sp, #0x0]
-	ldr r2, [sp, #0x8]
-	str r1, [r0, #0x40]
-	ldr r1, [r0, #0x40]
-	cmp r2, #0x0
-	str r1, [r0, #0x34]
-	ldreq r2, _020D0FE8 ; =FSi_ReadMemCallback
-	ldr r1, [sp, #0xc]
-	str r2, [r0, #0x48]
-	cmp r1, #0x0
-	ldreq r1, _020D0FEC ; =FSi_WriteMemCallback
-	str r1, [r0, #0x4c]
-	ldr r2, [r0, #0x48]
-	mov r1, #0x0
-	str r2, [r0, #0x50]
-	str r1, [r0, #0x44]
-	ldr r1, [r0, #0x1c]
-	orr r1, r1, #0x2
-	str r1, [r0, #0x1c]
-	mov r0, #0x1
-	bx lr
-	.balign 4
-_020D0FE8: .word FSi_ReadMemCallback
-_020D0FEC: .word FSi_WriteMemCallback
-
-	arm_func_start FUN_020D0FF0
-FUN_020D0FF0: ; 0x020D0FF0
-	stmdb sp!, {r4,lr}
-	mov r4, r0
-	ldr r0, [r4, #0x0]
-	cmp r0, #0x0
-	ldmeqia sp!, {r4,lr}
-	bxeq lr
-	bl OS_DisableInterrupts
-	ldr r2, [r4, #0x4]
-	mov r3, #0x0
-	cmp r2, #0x0
-	ldrne r1, [r4, #0x8]
-	strne r1, [r2, #0x8]
-	ldr r2, [r4, #0x8]
-	cmp r2, #0x0
-	ldrne r1, [r4, #0x4]
-	strne r1, [r2, #0x4]
-	str r3, [r4, #0x0]
-	str r3, [r4, #0x8]
-	ldr r1, [r4, #0x8]
-	ldr r2, _020D1080 ; =0x021D53EC
-	str r1, [r4, #0x4]
-	ldr r1, [r4, #0x1c]
-	bic r1, r1, #0x1
-	str r1, [r4, #0x1c]
-	ldr r1, [r2, #0x0]
-	cmp r1, r4
-	bne _020D1074
-	ldr r1, _020D1084 ; =0x021D53E8
-	str r3, [r2, #0x8]
-	ldr r1, [r1, #0x0]
-	strh r3, [r2, #0x6]
-	str r1, [r2, #0x0]
-	strh r3, [r2, #0x4]
-_020D1074:
-	bl OS_RestoreInterrupts
-	ldmia sp!, {r4,lr}
-	bx lr
-	.balign 4
-_020D1080: .word 0x021D53EC
-_020D1084: .word 0x021D53E8
-
-	arm_func_start FS_RegisterArchiveName
-FS_RegisterArchiveName: ; 0x020D1088
-	stmdb sp!, {r4-r8,lr}
-	mov r6, r1
-	mov r5, r2
-	mov r7, r0
-	mov r8, #0x0
-	bl OS_DisableInterrupts
-	mov r4, r0
-	mov r0, r6
-	mov r1, r5
-	bl FS_FindArchive
-_020D10B0:
-	cmp r0, #0x0
-	bne _020D112C
-	ldr r1, _020D1140
-	ldr r2, [r1]
-	cmp r2, #0x0
-	bne _020D10E8
-	ldr r0, _020D1144
-	mov r2, r8
-	str r7, [r1]
-	str r7, [r0]
-	str r2, [r0, #0x8]
-	strh r2, [r0, #0x6]
-	strh r2, [r0, #0x4]
-	b _020D110C
-_020D10E8:
-	ldr r0, [r2, #0x4]
-	cmp r0, #0x0
-	beq _020D1104
-_020D10F4:
-	mov r2, r0
-	ldr r0, [r0, #0x4]
-	cmp r0, #0x0
-	bne _020D10F4
-_020D1104:
-	str r7, [r2, #0x4]
-	str r2, [r7, #0x8]
-_020D110C:
-	mov r0, r6
-	mov r1, r5
-	bl FSi_GetPackedName
-	str r0, [r7]
-	ldr r0, [r7, #0x1C]
-	mov r8, #0x1
-	orr r0, r0, #0x1
-	str r0, [r7, #0x1C]
-_020D112C:
-	mov r0, r4
-	bl OS_RestoreInterrupts
-	mov r0, r8
-	ldmia sp!, {r4-r8,lr}
-	bx lr
-_020D1140: .word 0x021D53E8
-_020D1144: .word 0x021D53EC
-
-	arm_func_start FS_FindArchive
-FS_FindArchive:
-	stmdb sp!, {r4-r5,lr}
-	sub sp, sp, #0x4
-	bl FSi_GetPackedName
-	mov r5, r0
-	bl OS_DisableInterrupts
-	ldr r1, _020D1194 ; =0x021D53E8
-	ldr r4, [r1, #0x0]
-	b _020D116C
-_020D1168:
-	ldr r4, [r4, #0x4]
-_020D116C:
-	cmp r4, #0x0
-	beq _020D1180
-	ldr r1, [r4, #0x0]
-	cmp r1, r5
-	bne _020D1168
-_020D1180:
-	bl OS_RestoreInterrupts
-	mov r0, r4
-	add sp, sp, #0x4
-	ldmia sp!, {r4-r5,lr}
-	bx lr
-	.balign 4
-_020D1194: .word 0x021D53E8
-
-	arm_func_start FS_InitArchive
-FS_InitArchive: ; 0x020D1198
-	stmdb sp!, {r4,lr}
-	mov r1, #0x0
-	mov r2, #0x5c
-	mov r4, r0
-	bl MI_CpuFill8
-	mov r1, #0x0
-	str r1, [r4, #0x10]
-	ldr r0, [r4, #0x10]
-	str r0, [r4, #0xc]
-	str r1, [r4, #0x18]
-	ldr r0, [r4, #0x18]
-	str r0, [r4, #0x14]
-	ldmia sp!, {r4,lr}
-	bx lr
-
-	arm_func_start FSi_SendCommand
-FSi_SendCommand:
-	stmdb sp!, {r4-r7,lr}
-	sub sp, sp, #0x4
-	mov r7, r0
-	ldr r6, [r7, #0x8]
-	mov r2, #0x1
-	str r1, [r7, #0x10]
-	mov r0, #0x2
-	str r0, [r7, #0x14]
-	ldr r0, [r7, #0xc]
-	mov r5, r2, lsl r1
-	orr r0, r0, #0x1
-	str r0, [r7, #0xc]
-	bl OS_DisableInterrupts
-	ldr r1, [r6, #0x1c]
-	mov r4, r0
-	ands r0, r1, #0x80
-	beq _020D1238
-	mov r0, r7
-	mov r1, #0x3
-	bl FSi_ReleaseCommand
-	mov r0, r4
-	bl OS_RestoreInterrupts
-	add sp, sp, #0x4
-	mov r0, #0x0
-	ldmia sp!, {r4-r7,lr}
-	bx lr
-_020D1238:
-	ands r0, r5, #0x1fc
-	ldrne r0, [r7, #0xc]
-	add r2, r6, #0x20
-	orrne r0, r0, #0x4
-	strne r0, [r7, #0xc]
-	ldr r1, [r7, #0x0]
-	ldr r0, [r7, #0x4]
-	cmp r1, #0x0
-	strne r0, [r1, #0x4]
-	cmp r0, #0x0
-	strne r1, [r0, #0x0]
-	ldr r0, [r2, #0x4]
-	cmp r0, #0x0
-	beq _020D1280
-_020D1270:
-	mov r2, r0
-	ldr r0, [r0, #0x4]
-	cmp r0, #0x0
-	bne _020D1270
-_020D1280:
-	str r7, [r2, #0x4]
-	str r2, [r7, #0x0]
-	mov r1, #0x0
-	str r1, [r7, #0x4]
-	ldr r0, [r6, #0x1c]
-	ands r0, r0, #0x8
-	movne r1, #0x1
-	cmp r1, #0x0
-	bne _020D132C
-	ldr r0, [r6, #0x1c]
-	ands r0, r0, #0x10
-	bne _020D132C
-	ldr r1, [r6, #0x1c]
-	mov r0, r4
-	orr r1, r1, #0x10
-	str r1, [r6, #0x1c]
-	bl OS_RestoreInterrupts
-	ldr r0, [r6, #0x58]
-	ands r0, r0, #0x200
-	beq _020D12E0
-	ldr r2, [r6, #0x54]
-	mov r0, r7
-	mov r1, #0x9
-	blx r2
-_020D12E0:
-	bl OS_DisableInterrupts
-	ldr r1, [r7, #0xc]
-	orr r1, r1, #0x40
-	str r1, [r7, #0xc]
-	ldr r1, [r7, #0xc]
-	ands r1, r1, #0x4
-	movne r1, #0x1
-	moveq r1, #0x0
-	cmp r1, #0x0
-	bne _020D1324
-	bl OS_RestoreInterrupts
-	mov r0, r7
-	bl FSi_ExecuteAsyncCommand
-	add sp, sp, #0x4
-	mov r0, #0x1
-	ldmia sp!, {r4-r7,lr}
-	bx lr
-_020D1324:
-	bl OS_RestoreInterrupts
-	b _020D1378
-_020D132C:
-	ldr r0, [r7, #0xc]
-	ands r0, r0, #0x4
-	movne r0, #0x1
-	moveq r0, #0x0
-	cmp r0, #0x0
-	bne _020D135C
-	mov r0, r4
-	bl OS_RestoreInterrupts
-	add sp, sp, #0x4
-	mov r0, #0x1
-	ldmia sp!, {r4-r7,lr}
-	bx lr
-_020D135C:
-	add r0, r7, #0x18
-	bl OS_SleepThread
-	ldr r0, [r7, #0xc]
-	ands r0, r0, #0x40
-	beq _020D135C
-	mov r0, r4
-	bl OS_RestoreInterrupts
-_020D1378:
-	mov r0, r7
-	bl FSi_ExecuteSyncCommand
-	add sp, sp, #0x4
-	ldmia sp!, {r4-r7,lr}
-	bx lr
-
-	arm_func_start FSi_ExecuteSyncCommand
-FSi_ExecuteSyncCommand: ; 0x020D138C
-	stmdb sp!, {r4,lr}
-	mov r4, r0
-	ldr r1, [r4, #0x10]
-	bl FSi_TranslateCommand
-	mov r1, r0
-	mov r0, r4
-	bl FSi_ReleaseCommand
-	ldr r0, [r4, #0x8]
-	bl FSi_NextCommand
-_020D13B0:
-	cmp r0, #0x0
-	beq _020D13BC
-	bl FSi_ExecuteAsyncCommand
-_020D13BC:
-	ldr r0, [r4, #0x14]
-	cmp r0, #0x0
-	moveq r0, #0x1
-	movne r0, #0x0
-	ldmia sp!, {r4,lr}
-	bx lr
-
-	arm_func_start FSi_ExecuteAsyncCommand
-FSi_ExecuteAsyncCommand: ; 0x020D13D4
-	stmdb sp!, {r4-r8,lr}
-	movs r6, r0
-	ldr r5, [r6, #0x8]
-	ldmeqia sp!, {r4-r8,lr}
-	bxeq lr
-	mov r7, #0x0
-	mov r8, #0x1
-_020D13F0:
-	bl OS_DisableInterrupts
-	ldr r1, [r6, #0xc]
-	mov r4, r0
-	orr r0, r1, #0x40
-	str r0, [r6, #0xc]
-	ldr r0, [r6, #0xc]
-	ands r0, r0, #0x4
-	movne r0, r8
-	moveq r0, r7
-	cmp r0, #0x0
-	beq _020D1434
-	add r0, r6, #0x18
-	bl OS_WakeupThread
-	mov r0, r4
-	bl OS_RestoreInterrupts
-	ldmia sp!, {r4-r8,lr}
-	bx lr
-_020D1434:
-	ldr r1, [r6, #0xc]
-	mov r0, r4
-	orr r1, r1, #0x8
-	str r1, [r6, #0xc]
-	bl OS_RestoreInterrupts
-	ldr r1, [r6, #0x10]
-	mov r0, r6
-	bl FSi_TranslateCommand
-	cmp r0, #0x6
-	ldmeqia sp!, {r4-r8,lr}
-	bxeq lr
-	mov r0, r5
-	bl FSi_NextCommand
-	movs r6, r0
-	bne _020D13F0
-	ldmia sp!, {r4-r8,lr}
-	bx lr
-
-	arm_func_start FSi_NextCommand
-FSi_NextCommand:
-	stmdb sp!, {r4-r9,lr}
-	sub sp, sp, #0x4c
-	mov r6, r0
-	bl OS_DisableInterrupts
-	ldr r1, [r6, #0x1c]
-	mov r5, r0
-	ands r0, r1, #0x20
-	beq _020D1500
-	ldr r0, [r6, #0x1c]
-	bic r0, r0, #0x20
-	str r0, [r6, #0x1c]
-	ldr r0, [r6, #0x24]
-	cmp r0, #0x0
-	beq _020D1500
-	mov r8, #0x0
-	mov r9, #0x1
-	mov r7, #0x3
-_020D14BC:
-	ldr r1, [r0, #0xc]
-	ldr r4, [r0, #0x4]
-	ands r1, r1, #0x2
-	movne r1, r9
-	moveq r1, r8
-	cmp r1, #0x0
-	beq _020D14F4
-	ldr r1, [r6, #0x24]
-	cmp r1, r0
-	mov r1, r7
-	streq r4, [r6, #0x24]
-	bl FSi_ReleaseCommand
-_020D14EC:
-	cmp r4, #0x0
-	ldreq r4, [r6, #0x24]
-_020D14F4:
-	mov r0, r4
-	cmp r4, #0x0
-	bne _020D14BC
-_020D1500:
-	ldr r0, [r6, #0x1c]
-	ands r0, r0, #0x40
-	bne _020D15EC
-	ldr r0, [r6, #0x1c]
-	ands r0, r0, #0x8
-	movne r0, #0x1
-	moveq r0, #0x0
-	cmp r0, #0x0
-	bne _020D15EC
-	ldr r4, [r6, #0x24]
-	cmp r4, #0x0
-	beq _020D15EC
-	ldr r0, [r6, #0x1c]
-	ands r0, r0, #0x10
-	movne r0, #0x1
-	moveq r0, #0x0
-	cmp r0, #0x0
-	moveq r7, #0x1
-	movne r7, #0x0
-	cmp r7, #0x0
-	ldrne r0, [r6, #0x1c]
-	orrne r0, r0, #0x10
-	strne r0, [r6, #0x1c]
-	mov r0, r5
-	bl OS_RestoreInterrupts
-_020D1564:
-	cmp r7, #0x0
-	beq _020D1588
-	ldr r0, [r6, #0x58]
-	ands r0, r0, #0x200
-	beq _020D1588
-	ldr r2, [r6, #0x54]
-	mov r0, r4
-	mov r1, #0x9
-	blx r2
-_020D1588:
-	bl OS_DisableInterrupts
-	ldr r1, [r4, #0xC]
-	mov r5, r0
-	orr r0, r1, #0x40
-	str r0, [r4, #0xC]
-	ldr r0, [r4, #0xC]
-	ands r0, r0, #0x4
-	movne r0, #0x1
-	moveq r0, #0x0
-	cmp r0, #0x0
-	beq _020D15D4
-	add r0, r4, #0x18
-	bl OS_WakeupThread
-	mov r0, r5
-	bl OS_RestoreInterrupts
-	add sp, sp, #0x4c
-	mov r0, #0x0
-	ldmia sp!, {r4-r9, lr}
-	bx lr
-_020D15D4:
-	mov r0, r5
-	bl OS_RestoreInterrupts
-	add sp, sp, #0x4c
-	mov r0, r4
-	ldmia sp!, {r4-r9, lr}
-	bx lr
-_020D15EC:
-	ldr r0, [r6, #0x1c]
-	ands r0, r0, #0x10
-	beq _020D162C
-	ldr r0, [r6, #0x1c]
-	bic r0, r0, #0x10
-	str r0, [r6, #0x1c]
-	ldr r0, [r6, #0x58]
-	ands r0, r0, #0x400
-	beq _020D162C
-	add r0, sp, #0x0
-	bl FS_InitFile
-	str r6, [sp, #0x8]
-	ldr r2, [r6, #0x54]
-	add r0, sp, #0x0
-	mov r1, #0xa
-	blx r2
-_020D162C:
-	ldr r0, [r6, #0x1c]
-	ands r0, r0, #0x40
-	beq _020D1658
-	ldr r1, [r6, #0x1c]
-	add r0, r6, #0x14
-	bic r1, r1, #0x40
-	str r1, [r6, #0x1c]
-	ldr r1, [r6, #0x1c]
-	orr r1, r1, #0x8
-	str r1, [r6, #0x1c]
-	bl OS_WakeupThread
-_020D1658:
-	mov r0, r5
-	bl OS_RestoreInterrupts
-_020D1660:
-	mov r0, #0x0
-	add sp, sp, #0x4c
-	ldmia sp!, {r4-r9, lr}
-	bx lr
-
-	arm_func_start FSi_ReadMemoryCore
-FSi_ReadMemoryCore: ; 0x020D1670
-	stmdb sp!, {lr}
-	sub sp, sp, #0x4
-	mov r0, r2
-	mov r2, r3
-	bl MI_CpuCopy8
-_020D1684:
-	mov r0, #0x0
-	add sp, sp, #0x4
-	ldmfd sp!, {lr}
-	bx lr
-
-	arm_func_start FSi_WriteMemCallback
-FSi_WriteMemCallback: ; 0x020D1694
-	stmdb sp!, {lr}
-	sub sp, sp, #0x4
-	ldr r12, [r0, #0x28]
-	mov r0, r1
-	add r1, r12, r2
-	mov r2, r3
-	bl MI_CpuCopy8
-_020D16B0:
-	mov r0, #0x0
-	add sp, sp, #0x4
-	ldmfd sp!, {lr}
-	bx lr
-
-	arm_func_start FSi_ReadMemCallback
-FSi_ReadMemCallback: ; 0x020D16C0
-	stmdb sp!, {lr}
-	sub sp, sp, #0x4
-	ldr r0, [r0, #0x28]
-	add r0, r0, r2
-	mov r2, r3
-	bl MI_CpuCopy8
-_020D16D8:
-	mov r0, #0x0
-	add sp, sp, #0x4
-	ldmfd sp!, {lr}
-	bx lr
-
-	arm_func_start FSi_GetPackedName
-FSi_GetPackedName: ; 0x020D16E8
-	stmdb sp!, {lr}
-	sub sp, sp, #0x4
-	cmp r1, #0x3
-	mov lr, #0x0
-	bgt _020D173C
-	mov r12, lr
-	cmp r1, #0x0
-	ble _020D173C
-	mov r3, lr
-_020D170C:
-	ldrb r2, [r0, r12]
-	cmp r2, #0x0
-	beq _020D173C
-	sub r2, r2, #0x41
-	cmp r2, #0x19
-	addls r2, r2, #0x61
-	addhi r2, r2, #0x41
-	add r12, r12, #0x1
-	orr lr, lr, r2, lsl r3
-	cmp r12, r1
-	add r3, r3, #0x8
-	blt _020D170C
-_020D173C:
-	mov r0, lr
-	add sp, sp, #0x4
-	ldmia sp!, {lr}
-	bx lr
-
-	arm_func_start FS_ChangeDir
-FS_ChangeDir: ; 0x020D174C
-	stmdb sp!, {r4,lr}
-	sub sp, sp, #0x58
-	mov r4, r0
-	add r0, sp, #0xc
-	bl FS_InitFile
-	add r0, sp, #0xc
-	add r3, sp, #0x0
-	mov r1, r4
-	mov r2, #0x0
-	bl FSi_FindPath
-_020D1774:
-	cmp r0, #0x0
-	moveq r0, #0x0
-	addne r0, sp, #0x0
-	ldrne r3, _020D179C
-	ldmneia r0, {r0, r1, r2}
-	stmneia r3, {r0, r1, r2}
-	movne r0, #0x1
-	add sp, sp, #0x58
-	ldmia sp!, {r4, lr}
-	bx lr
-_020D179C: .word 0x021D53EC
-
-	arm_func_start FS_SeekFile
-FS_SeekFile: ; 0x020D17A0
-	cmp r2, #0x0
-	beq _020D17BC
-	cmp r2, #0x1
-	beq _020D17C8
-	cmp r2, #0x2
-	beq _020D17D4
-	b _020D17E0
-_020D17BC:
-	ldr r2, [r0, #0x24]
-	add r1, r1, r2
-	b _020D17E8
-_020D17C8:
-	ldr r2, [r0, #0x2c]
-	add r1, r1, r2
-	b _020D17E8
-_020D17D4:
-	ldr r2, [r0, #0x28]
-	add r1, r1, r2
-	b _020D17E8
-_020D17E0:
-	mov r0, #0x0
-	bx lr
-_020D17E8:
-	ldr r2, [r0, #0x24]
-	cmp r1, r2
-	movlt r1, r2
-	ldr r2, [r0, #0x28]
-	cmp r1, r2
-	movgt r1, r2
-	str r1, [r0, #0x2c]
-	mov r0, #0x1
-	bx lr
-
-	arm_func_start FS_ReadFile
-FS_ReadFile: ; 0x020D180C
-	ldr ip, _020D1818 ; =FUN_020D1AAC
-	mov r3, #0x0
-	bx r12
-	.balign 4
-_020D1818: .word FUN_020D1AAC
-
-	arm_func_start FS_ReadFileAsync
-FS_ReadFileAsync: ; 0x020D181C
-	ldr ip, _020D1828 ; =FUN_020D1AAC
-	mov r3, #0x1
-	bx r12
-	.balign 4
-_020D1828: .word FUN_020D1AAC
-
-	arm_func_start FS_WaitAsync
-FS_WaitAsync: ; 0x020D182C
-	stmdb sp!, {r4-r7,lr}
-	sub sp, sp, #0x4
-	mov r6, r0
-	mov r5, #0x0
-	bl OS_DisableInterrupts
-	ldr r1, [r6, #0xc]
-	mov r4, r0
-	ands r0, r1, #0x1
-	movne r0, #0x1
-	moveq r0, r5
-	cmp r0, #0x0
-	beq _020D18BC
-	ldr r0, [r6, #0xc]
-	ands r0, r0, #0x44
-	moveq r5, #0x1
-	movne r5, #0x0
-	cmp r5, #0x0
-	beq _020D189C
-	ldr r0, [r6, #0xc]
-	orr r0, r0, #0x4
-	str r0, [r6, #0xc]
-	add r7, r6, #0x18
-_020D1884:
-	mov r0, r7
-	bl OS_SleepThread
-	ldr r0, [r6, #0xc]
-	ands r0, r0, #0x40
-	beq _020D1884
-	b _020D18BC
-_020D189C:
-	add r0, r6, #0x18
-	bl OS_SleepThread
-	ldr r0, [r6, #0xc]
-	ands r0, r0, #0x1
-	movne r0, #0x1
-	moveq r0, #0x0
-	cmp r0, #0x0
-	bne _020D189C
-_020D18BC:
-	mov r0, r4
-	bl OS_RestoreInterrupts
-_020D18C4:
-	cmp r5, #0x0
-	beq _020D18E0
-	mov r0, r6
-	bl FSi_ExecuteSyncCommand
-	add sp, sp, #4
-	ldmia sp!, {r4-r7,lr}
-	bx lr
-_020D18E0:
-	ldr r0, [r6, #0x14]
-	cmp r0, #0x0
-	moveq r0, #0x1
-	movne r0, #0x0
-	add sp, sp, #0x4
-	ldmia sp!, {r4-r7,lr}
-	bx lr
-
-	arm_func_start FS_CloseFile
-FS_CloseFile: ; 0x020D18FC
-	stmdb sp!, {r4,lr}
-	mov r1, #0x8
-	mov r4, r0
-	bl FSi_SendCommand
-_020D190C:
-	cmp r0, #0x0
-	moveq r0, #0x0
-	ldmeqia sp!, {r4,lr}
-	bxeq lr
-	mov r0, #0x0
-	str r0, [r4, #0x8]
-	mov r0, #0xE
-	str r0, [r4, #0x10]
-	ldr r1, [r4, #0xC]
-	mov r0, #0x1
-	bic r1, r1, #0x30
-	str r1, [r4, #0xC]
-	ldmia sp!, {r4,lr}
-	bx lr
-
-	arm_func_start FS_OpenFile
-FS_OpenFile: ; 0x020D1944
-	stmdb sp!, {r4,lr}
-	sub sp, sp, #0x8
-	mov r4, r0
-	add r0, sp, #0x0
-	bl FS_ConvertPathToFileID
-_020D1958:
-	cmp r0, #0x0
-	beq _020D1984
-	add r1, sp, #0x0
-	mov r0, r4
-	ldmia r1, {r1, r2}
-	bl FS_OpenFileFast
-	cmp r0, #0x0
-	addne sp, sp, #0x8
-	movne r0, #0x1
-	ldmneia sp!, {r4, lr}
-	bxne lr
-_020D1984:
-	mov r0, #0x0
-	add sp, sp, #0x8
-	ldmia sp!, {r4, lr}
-	bx lr
-
-	arm_func_start FS_OpenFileFast
-FS_OpenFileFast:
-	stmdb sp!, {r0-r3}
-	stmdb sp!, {r4,lr}
-	ldr r1, [sp, #0xc]
-	mov r4, r0
-	cmp r1, #0x0
-	moveq r0, #0x0
-	ldmeqia sp!, {r4,lr}
-	addeq sp, sp, #0x10
-	bxeq lr
-	str r1, [r4, #0x8]
-	ldr r3, [sp, #0xc]
-	ldr r2, [sp, #0x10]
-	mov r1, #0x6
-	str r3, [r4, #0x30]
-	str r2, [r4, #0x34]
-	bl FSi_SendCommand
-_020D19D4:
-	cmp r0, #0x0
-	moveq r0, #0x0
-	ldmeqia sp!, {r4, lr}
-	addeq sp, sp, #0x10
-	bxeq lr
-	ldr r1, [r4, #0xC]
-	mov r0, #0x1
-	orr r1, r1, #0x10
-	str r1, [r4, #0xC]
-	ldr r1, [r4, #0xC]
-	bic r1, r1, #0x20
-	str r1, [r4, #0xC]
-	ldmia sp!, {r4, lr}
-	add sp, sp, #0x10
-	bx lr
-
-	arm_func_start FS_OpenFileDirect
-FS_OpenFileDirect:
-	stmdb sp!, {r4,lr}
-	mov r4, r0
-	str r1, [r4, #0x8]
-	ldr r12, [sp, #0x8]
-	mov r1, #0x7
-	str r12, [r4, #0x38]
-	str r2, [r4, #0x30]
-	str r3, [r4, #0x34]
-	bl FSi_SendCommand
-_020D1A34:
-	cmp r0, #0x0
-	moveq r0, #0x0
-	ldmeqia sp!, {r4, lr}
-	bxeq lr
-	ldr r1, [r4, #0xC]
-	mov r0, #0x1
-	orr r1, r1, #0x10
-	str r1, [r4, #0xC]
-	ldr r1, [r4, #0xC]
-	bic r1, r1, #0x20
-	str r1, [r4, #0xC]
-	ldmia sp!, {r4, lr}
-	bx lr
-
-	arm_func_start FS_ConvertPathToFileID
-FS_ConvertPathToFileID:
-	stmdb sp!, {r4-r5,lr}
-	sub sp, sp, #0x4c
-	mov r5, r0
-	add r0, sp, #0x0
-	mov r4, r1
-	bl FS_InitFile
-_020D1A80:
-	add r0, sp, #0x0
-	mov r1, r4
-	mov r2, r5
-	mov r3, #0x0
-	bl FSi_FindPath
-	cmp r0, #0x0
-	movne r0, #0x1
-	moveq r0, #0x0
-	add sp, sp, #0x4C
-	ldmia sp!, {r4-r5, lr}
-	bx lr
-
-	arm_func_start FUN_020D1AAC
-FUN_020D1AAC: ; 0x020D1AAC
-	stmdb sp!, {r4-r7,lr}
-	sub sp, sp, #0x4
-	mov r7, r0
-	ldr r4, [r7, #0x2c]
-	ldr r0, [r7, #0x28]
-	mov r6, r2
-	str r1, [r7, #0x30]
-	sub r0, r0, r4
-	cmp r6, r0
-	movgt r6, r0
-	cmp r6, #0x0
-	movlt r6, #0x0
-	str r2, [r7, #0x34]
-	mov r5, r3
-	str r6, [r7, #0x38]
-	cmp r5, #0x0
-	ldreq r0, [r7, #0xc]
-	mov r1, #0x0
-	orreq r0, r0, #0x4
-	streq r0, [r7, #0xc]
-	mov r0, r7
-	bl FSi_SendCommand
-_020D1B04:
-	cmp r5, #0x0
-	bne _020D1B24
-	mov r0, r7
-	bl FS_WaitAsync
-	cmp r0, #0x0
-	ldrne r0, [r7, #0x2C]
-	subne r6, r0, r4
-	mvneq r6, #0x0
-_020D1B24:
-	mov r0, r6
-	add sp, sp, #0x4
-	ldmia sp!, {r4-r7, lr}
-	bx lr
-
-	arm_func_start FSi_FindPath
-FSi_FindPath:
-	stmdb sp!, {r4-r8,lr}
-	sub sp, sp, #0x10
-	mov r7, r1
-	ldrb r1, [r7, #0x0]
-	mov r8, r0
-	mov r6, r2
-	mov r5, r3
-	cmp r1, #0x2f
-	beq _020D1B60
-	cmp r1, #0x5c
-	bne _020D1B84
-_020D1B60:
-	ldr r0, _020D1C90 ; =0x021D53EC
-	mov r1, #0x0
-	ldr r0, [r0, #0x0]
-	strh r1, [sp, #0x4]
-	str r0, [sp, #0x0]
-	str r1, [sp, #0x8]
-	strh r1, [sp, #0x6]
-	add r7, r7, #0x1
-	b _020D1C40
-_020D1B84:
-	ldr r0, _020D1C90 ; =0x021D53EC
-	add r3, sp, #0x0
-	ldmia r0, {r0-r2}
-	stmia r3, {r0-r2}
-	mov r4, #0x0
-_020D1B98:
-	ldrb r0, [r7, r4]
-	cmp r0, #0x0
-	beq _020D1C40
-	cmp r0, #0x2f
-	beq _020D1C40
-	cmp r0, #0x5c
-	beq _020D1C40
-	cmp r0, #0x3a
-	bne _020D1C34
-	mov r0, r7
-	mov r1, r4
-	bl FS_FindArchive
-_020D1BC8:
-	cmp r0, #0x0
-	addeq sp, sp, #0x10
-	moveq r0, #0x0
-	ldmeqia sp!, {r4-r8,lr}
-	bxeq lr
-	ldr r1, [r0, #0x1C]
-	ands r1, r1, #0x2
-	movne r1, #0x1
-	moveq r1, #0x0
-	cmp r1, #0x0
-	addeq sp, sp, #0x10
-	moveq r0, #0x0
-	ldmeqia sp!, {r4-r8,lr}
-	bxeq lr
-	mov r1, #0x0
-	str r0, [sp]
-	str r1, [sp, #0x8]
-	strh r1, [sp, #0x6]
-	strh r1, [sp, #0x4]
-	add r0, r4, #0x1
-	ldrb r0, [r7, r0]!
-	cmp r0, #0x2f
-	beq _020D1C2C
-	cmp r0, #0x5c
-	bne _020D1C40
-_020D1C2C:
-	add r7, r7, #0x1
-	b _020D1C40
-_020D1C34:
-	add r4, r4, #0x1
-	cmp r4, #0x3
-	ble _020D1B98
-_020D1C40:
-	ldr r1, [sp, #0x0]
-	add r0, sp, #0x0
-	str r1, [r8, #0x8]
-	str r7, [r8, #0x3c]
-	add r3, r8, #0x30
-	ldmia r0, {r0-r2}
-	stmia r3, {r0-r2}
-	cmp r5, #0x0
-	movne r0, #0x1
-	strne r0, [r8, #0x40]
-	strne r5, [r8, #0x44]
-	moveq r0, #0x0
-	streq r0, [r8, #0x40]
-	mov r0, r8
-	mov r1, #0x4
-	streq r6, [r8, #0x44]
-	bl FSi_SendCommand
-	add sp, sp, #0x10
-	ldmia sp!, {r4-r8,lr}
-	bx lr
-	.balign 4
-_020D1C90: .word 0x021D53EC
-
-	arm_func_start FS_InitFile
-FS_InitFile:
-	mov r3, #0x0
-	str r3, [r0, #0x0]
-	ldr r2, [r0, #0x0]
-	mov r1, #0xe
-	str r2, [r0, #0x4]
-	str r3, [r0, #0x1c]
-	ldr r2, [r0, #0x1c]
-	str r2, [r0, #0x18]
-	str r3, [r0, #0x8]
-	str r1, [r0, #0x10]
-	str r3, [r0, #0xc]
-	bx lr
-
-	arm_func_start FS_IsAvailable
-FS_IsAvailable: ; 0x020D1CC4
-	ldr r0, _020D1CD0 ; =0x021D53F8
-	ldr r0, [r0, #0x0]
-	bx lr
-	.balign 4
-_020D1CD0: .word 0x021D53F8
-
-	arm_func_start FS_Init
-FS_Init: ; 0x020D1CD4
-	stmdb sp!, {lr}
-	sub sp, sp, #0x4
-	ldr r1, _020D1D0C ; =0x021D53F8
-	ldr r2, [r1, #0x0]
-	cmp r2, #0x0
-	addne sp, sp, #0x4
-	ldmneia sp!, {lr}
-	bxne lr
-	mov r2, #0x1
-	str r2, [r1, #0x0]
-	bl FSi_InitRom
-	add sp, sp, #0x4
-	ldmia sp!, {lr}
-	bx lr
-	.balign 4
-_020D1D0C: .word 0x021D53F8
-
-	arm_func_start FS_TryLoadTable
-FS_TryLoadTable: ; 0x020D1D10
-	ldr ip, _020D1D28 ; =FUN_020D0D84
-	mov r3, r0
-	mov r2, r1
-	ldr r0, _020D1D2C ; =0x021D5414
-	mov r1, r3
-	bx r12
-	.balign 4
-_020D1D28: .word FUN_020D0D84
-_020D1D2C: .word 0x021D5414
-
-	arm_func_start FS_SetDefaultDMA
-FS_SetDefaultDMA: ; 0x020D1D30
-	stmdb sp!, {r4-r6,lr}
-	mov r6, r0
-	bl OS_DisableInterrupts
-	mov r5, r0
-	ldr r1, _020D1D7C ; =0x021D5400
-	ldr r0, _020D1D80 ; =0x021D5414
-	ldr r4, [r1, #0x0]
-	bl FS_SuspendArchive
-	ldr r1, _020D1D7C ; =0x021D5400
-	cmp r0, #0x0
-	str r6, [r1, #0x0]
-	beq _020D1D68
-	ldr r0, _020D1D80 ; =0x021D5414
-	bl FS_ResumeArchive
-_020D1D68:
-	mov r0, r5
-	bl OS_RestoreInterrupts
-	mov r0, r4
-	ldmia sp!, {r4-r6,lr}
-	bx lr
-	.balign 4
-_020D1D7C: .word 0x021D5400
-_020D1D80: .word 0x021D5414
-
-	arm_func_start FSi_InitRom
-FSi_InitRom: ; 0x020D1D84
-	stmdb sp!, {r4-r5,lr}
-	sub sp, sp, #0x14
-	ldr r1, _020D1EE8 ; =0x021D5400
-	str r0, [r1, #0x0]
-	bl OS_GetLockID
-	ldr r3, _020D1EEC ; =0x021D53FC
-	ldr r2, _020D1EF0 ; =0x021D5404
-	mov r12, #0x0
-	ldr r1, _020D1EF4 ; =0x021D540C
-	str r0, [r3, #0x0]
-	str r12, [r2, #0x0]
-	str r12, [r2, #0x4]
-	str r12, [r1, #0x0]
-	str r12, [r1, #0x4]
-	bl CARD_Init
-	ldr r0, _020D1EF8 ; =0x021D5414
-	bl FS_InitArchive
-	ldr r0, _020D1EF8 ; =0x021D5414
-	ldr r1, _020D1EFC ; =0x02106830
-	mov r2, #0x3
-	bl FS_RegisterArchiveName
-	ldr r0, _020D1F00 ; =0x027FFC40
-	ldrh r0, [r0, #0x0]
-	cmp r0, #0x2
-	bne _020D1E4C
-	ldr ip, _020D1EF0 ; =0x021D5404
-	mvn r2, #0x0
-	ldr r3, _020D1EF4 ; =0x021D540C
-	mov lr, #0x0
-	ldr r0, _020D1EF8 ; =0x021D5414
-	ldr r1, _020D1F04 ; =FSi_EmptyArchiveProc
-	str r2, [r12, #0x0]
-	str lr, [r12, #0x4]
-	str r2, [r3, #0x0]
-	str lr, [r3, #0x4]
-	bl FS_SetArchiveProc
-	mov r1, #0x0
-	str r1, [sp, #0x0]
-	ldr r0, _020D1F08 ; =FSi_ReadDummyCallback
-	str r1, [sp, #0x4]
-	str r0, [sp, #0x8]
-	ldr ip, _020D1F0C ; =FSi_WriteDummyCallback
-	ldr r0, _020D1EF8 ; =0x021D5414
-	mov r2, r1
-	mov r3, r1
-	str r12, [sp, #0xc]
-	bl FS_LoadArchive
-	add sp, sp, #0x14
-	ldmia sp!, {r4-r5,lr}
-	bx lr
-_020D1E4C:
-	ldr r5, _020D1F10 ; =0x027FFE40
-	ldr r0, _020D1EF8 ; =0x021D5414
-	ldr r1, _020D1F14 ; =FSi_RomArchiveProc
-	ldr r2, _020D1F18 ; =0x00000602
-	ldr r4, _020D1F1C ; =0x027FFE48
-	bl FS_SetArchiveProc
-	ldr r1, [r5, #0x0]
-	mvn r0, #0x0
-	cmp r1, r0
-	addeq sp, sp, #0x14
-	ldmeqia sp!, {r4-r5,lr}
-	bxeq lr
-	cmp r1, #0x0
-	addeq sp, sp, #0x14
-	ldmeqia sp!, {r4-r5,lr}
-	bxeq lr
-	ldr r2, [r4, #0x0]
-	cmp r2, r0
-	addeq sp, sp, #0x14
-	ldmeqia sp!, {r4-r5,lr}
-	bxeq lr
-	cmp r2, #0x0
-	addeq sp, sp, #0x14
-	ldmeqia sp!, {r4-r5,lr}
-	bxeq lr
-	str r1, [sp, #0x0]
-	ldr r0, [r5, #0x4]
-	ldr r1, _020D1F20 ; =FSi_ReadRomCallback
-	str r0, [sp, #0x4]
-	ldr r0, _020D1F0C ; =FSi_WriteDummyCallback
-	str r1, [sp, #0x8]
-	str r0, [sp, #0xc]
-	ldr r3, [r4, #0x4]
-	ldr r0, _020D1EF8 ; =0x021D5414
-	mov r1, #0x0
-	bl FS_LoadArchive
-	add sp, sp, #0x14
-	ldmia sp!, {r4-r5,lr}
-	bx lr
-	.balign 4
-_020D1EE8: .word 0x021D5400
-_020D1EEC: .word 0x021D53FC
-_020D1EF0: .word 0x021D5404
-_020D1EF4: .word 0x021D540C
-_020D1EF8: .word 0x021D5414
-_020D1EFC: .word 0x02106830
-_020D1F00: .word 0x027FFC40
-_020D1F04: .word FSi_EmptyArchiveProc
-_020D1F08: .word FSi_ReadDummyCallback
-_020D1F0C: .word FSi_WriteDummyCallback
-_020D1F10: .word 0x027FFE40
-_020D1F14: .word FSi_RomArchiveProc
-_020D1F18: .word 0x00000602
-_020D1F1C: .word 0x027FFE48
-_020D1F20: .word FSi_ReadRomCallback
-
-	arm_func_start FSi_EmptyArchiveProc
-FSi_EmptyArchiveProc: ; 0x020D1F24
-	mov r0, #0x4
-	bx lr
-
-	arm_func_start FSi_ReadDummyCallback
-FSi_ReadDummyCallback: ; 0x020D1F2C
-	mov r0, #0x1
-	bx lr
-
-	arm_func_start FSi_RomArchiveProc
-FSi_RomArchiveProc: ; 0x020D1F34
-	stmdb sp!, {lr}
-	sub sp, sp, #0x4
-	cmp r1, #0x1
-	beq _020D1FA0
-	cmp r1, #0x9
-	beq _020D1F58
-	cmp r1, #0xa
-	beq _020D1F7C
-	b _020D1FB0
-_020D1F58:
-	ldr r0, _020D1FC0 ; =0x021D53FC
-	ldr r0, [r0, #0x0]
-	mov r0, r0, lsl #0x10
-	mov r0, r0, lsr #0x10
-	bl CARD_LockRom
-	add sp, sp, #0x4
-	mov r0, #0x0
-	ldmia sp!, {lr}
-	bx lr
-_020D1F7C:
-	ldr r0, _020D1FC0 ; =0x021D53FC
-	ldr r0, [r0, #0x0]
-	mov r0, r0, lsl #0x10
-	mov r0, r0, lsr #0x10
-	bl CARD_UnlockRom
-	add sp, sp, #0x4
-	mov r0, #0x0
-	ldmia sp!, {lr}
-	bx lr
-_020D1FA0:
-	add sp, sp, #0x4
-	mov r0, #0x4
-	ldmia sp!, {lr}
-	bx lr
-_020D1FB0:
-	mov r0, #0x8
-	add sp, sp, #0x4
-	ldmia sp!, {lr}
-	bx lr
-	.balign 4
-_020D1FC0: .word 0x021D53FC
-
-	arm_func_start FSi_WriteDummyCallback
-FSi_WriteDummyCallback: ; 0x020D1FC4
-	mov r0, #0x1
-	bx lr
-
-	arm_func_start FSi_ReadRomCallback
-FSi_ReadRomCallback: ; 0x020D1FCC
-	stmdb sp!, {lr}
-	sub sp, sp, #0xc
-	ldr ip, _020D2010 ; =FSi_OnRomReadDone
-	mov lr, r1
-	str r12, [sp, #0x0]
-	str r0, [sp, #0x4]
-	mov r1, #0x1
-	ldr r0, _020D2014 ; =0x021D5400
-	str r1, [sp, #0x8]
-	mov r1, r2
-	ldr r0, [r0, #0x0]
-	mov r2, lr
-	bl CARDi_ReadRom
-	mov r0, #0x6
-	add sp, sp, #0xc
-	ldmia sp!, {lr}
-	bx lr
-	.balign 4
-_020D2010: .word FSi_OnRomReadDone
-_020D2014: .word 0x021D5400
-
-	arm_func_start FSi_OnRomReadDone
-FSi_OnRomReadDone: ; 0x020D2018
-	stmdb sp!, {r4,lr}
-	mov r4, r0
-	bl CARD_IsPulledOut
-_020D2024:
-	cmp r0, #0x0
-	movne r1, #0x5
-	moveq r1, #0x0
-	mov r0, r4
-	bl FS_NotifyArchiveAsyncEnd
-	ldmia sp!, {r4,lr}
-	bx lr
-
-
-	arm_func_start FS_UnloadOverlay
-FS_UnloadOverlay: ; 0x020D2040
-	stmdb sp!, {lr}
-	sub sp, sp, #0x2c
-	mov r3, r0
-	mov r2, r1
-	add r0, sp, #0x0
-	mov r1, r3
-	bl FS_LoadOverlayInfo
-_020D205C:
-	cmp r0, #0x0
-	beq _020D2074
-	add r0, sp, #0x0
-	bl FS_UnloadOverlayImage
-	cmp r0, #0x0
-	bne _020D2084
-_020D2074:
-	add sp, sp, #0x2c
-	mov r0, #0x0
-	ldmfd sp!, {lr}
-	bx lr
-_020D2084:
-	mov r0, #0x1
-	add sp, sp, #0x2c
-	ldmfd sp!, {lr}
-	bx lr
-
-	arm_func_start FS_LoadOverlay
-FS_LoadOverlay: ; 0x020D2094
-	stmdb sp!, {lr}
-	sub sp, sp, #0x2c
-	mov r3, r0
-	mov r2, r1
-	add r0, sp, #0x0
-	mov r1, r3
-	bl FS_LoadOverlayInfo
-_020D20B0:
-	cmp r0, #0x0
-	beq _020D20C8
-	add r0, sp, #0x0
-	bl FS_LoadOverlayImage
-	cmp r0, #0x0
-	bne _020D20D8
-_020D20C8:
-	add sp, sp, #0x2c
-	mov r0, #0x0
-	ldmfd sp!, {lr}
-	bx lr
-_020D20D8:
-	add r0, sp, #0x0
-	bl FS_StartOverlay
-	mov r0, #0x1
-	add sp, sp, #0x2c
-	ldmfd sp!, {lr}
-	bx lr
-
-	arm_func_start FS_UnloadOverlayImage
-FS_UnloadOverlayImage: ; 0x020D20F0
-	stmdb sp!, {lr}
-	sub sp, sp, #0x4
-	bl FS_EndOverlay
-	mov r0, #0x1
-	add sp, sp, #0x4
-	ldmia sp!, {lr}
-	bx lr
-
-	arm_func_start FS_EndOverlay
-FS_EndOverlay: ; 0x020D210C
-	stmdb sp!, {r4-r11,lr}
-	sub sp, sp, #0x4
-	ldr r8, _020D220C ; =0x021D74C8
-	mov r11, r0
-	mov r9, #0x0
-_020D2120:
-	ldr r1, [r11, #0x8]
-	ldr r0, [r11, #0xc]
-	ldr r5, [r11, #0x4]
-	add r0, r1, r0
-	mov r7, r9
-	mov r6, r9
-	add r4, r5, r0
-	bl OS_DisableInterrupts
-	ldr lr, [r8, #0x0]
-	mov r10, r9
-	mov r12, lr
-	cmp lr, #0x0
-	beq _020D21C4
-_020D2154:
-	ldr r2, [r12, #0x8]
-	ldr r3, [r12, #0x0]
-	cmp r2, #0x0
-	ldr r1, [r12, #0x4]
-	bne _020D2178
-	cmp r1, r5
-	blo _020D2178
-	cmp r1, r4
-	blo _020D2188
-_020D2178:
-	cmp r2, r5
-	blo _020D21B4
-	cmp r2, r4
-	bhs _020D21B4
-_020D2188:
-	cmp r6, #0x0
-	strne r12, [r6, #0x0]
-	moveq r7, r12
-	cmp lr, r12
-	streq r3, [r8, #0x0]
-	moveq lr, r3
-	str r9, [r12, #0x0]
-	cmp r10, #0x0
-	mov r6, r12
-	strne r3, [r10, #0x0]
-	b _020D21B8
-_020D21B4:
-	mov r10, r12
-_020D21B8:
-	mov r12, r3
-	cmp r3, #0x0
-	bne _020D2154
-_020D21C4:
-	bl OS_RestoreInterrupts
-_020D21C8:
-	cmp r7, #0x0
-	addeq sp, sp, #0x4
-	ldmeqia sp!, {r4-r11, lr}
-	bxeq lr
-_020D21D8:
-	ldr r1, [r7, #0x4]
-	ldr r4, [r7]
-	cmp r1, #0x0
-	beq _020D21F0
-	ldr r0, [r7, #0x8]
-	blx r1
-_020D21F0:
-	mov r7, r4
-	cmp r4, #0x0
-	bne _020D21D8
-	b _020D2120
-	add sp, sp, #0x4
-	ldmia sp!, {r4-r11, lr}
-	bx lr
-_020D220C: .word 0x021D74C8
-
-	arm_func_start FS_StartOverlay
-FS_StartOverlay: ; 0x020D2210
-	stmdb sp!, {r4-r6,lr}
-	mov r5, r0
-	bl FSi_GetOverlayBinarySize
-	ldr r1, _020D2300 ; =0x027FFC40
-	mov r4, r0
-	ldrh r0, [r1, #0x0]
-	cmp r0, #0x2
-	bne _020D22A4
-	ldrb r1, [r5, #0x1f]
-	mov r0, #0x0
-	ands r1, r1, #0x2
-	beq _020D2280
-	ldr r1, _020D2304 ; =0x02106F84
-	ldr r3, _020D2308 ; =0x02106F84
-	ldr r2, _020D230C ; =0x66666667
-	sub r12, r1, r3
-	smull r1, lr, r2, r12
-	mov lr, lr, asr #0x3
-	mov r1, r12, lsr #0x1f
-	ldr r2, [r5, #0x0]
-	add lr, r1, lr
-	cmp r2, lr
-	bhs _020D2280
-	mov r0, #0x14
-	mla r0, r2, r0, r3
-	ldr r1, [r5, #0x4]
-	mov r2, r4
-	bl FSi_CompareDigest
-_020D2280:
-	cmp r0, #0x0
-	bne _020D22A4
-	ldr r0, [r5, #0x4]
-	mov r2, r4
-	mov r1, #0x0
-	bl MI_CpuFill8
-	bl OS_Terminate
-	ldmia sp!, {r4-r6,lr}
-	bx lr
-_020D22A4:
-	ldrb r0, [r5, #0x1f]
-	ands r0, r0, #0x1
-	beq _020D22BC
-	ldr r0, [r5, #0x4]
-	add r0, r0, r4
-	bl MIi_UncompressBackward
-_020D22BC:
-	ldr r0, [r5, #0x4]
-	ldr r1, [r5, #0x8]
-	bl DC_FlushRange
-	ldr r6, [r5, #0x10]
-	ldr r4, [r5, #0x14]
-	cmp r6, r4
-	ldmcsia sp!, {r4-r6,lr}
-	bxcs lr
-_020D22DC:
-	ldr r0, [r6, #0x0]
-	cmp r0, #0x0
-	beq _020D22EC
-	blx r0
-_020D22EC:
-	add r6, r6, #0x4
-	cmp r6, r4
-	blo _020D22DC
-	ldmia sp!, {r4-r6,lr}
-	bx lr
-	.balign 4
-_020D2300: .word 0x027FFC40
-_020D2304: .word 0x02106F84
-_020D2308: .word 0x02106F84
-_020D230C: .word 0x66666667
-
-	arm_func_start FSi_CompareDigest
-FSi_CompareDigest:
-	stmdb sp!, {r4-r6,lr}
-	sub sp, sp, #0x58
-	mov r4, r0
-	mov r6, r1
-	mov r5, r2
-	add r0, sp, #0x4
-	mov r1, #0x0
-	mov r2, #0x14
-	bl MI_CpuFill8
-	ldr r0, _020D23AC ; =0x02106834
-	ldr r1, _020D23B0 ; =0x02106838
-	ldr r0, [r0, #0x0]
-	ldr r2, [r1, #0x0]
-	add r1, sp, #0x18
-	bl MI_CpuCopy8
-	ldr r3, _020D23B0 ; =0x02106838
-	mov r1, r6
-	ldr r12, [r3, #0x0]
-	mov r2, r5
-	add r0, sp, #0x4
-	add r3, sp, #0x18
-	str r12, [sp, #0x0]
-	bl MATH_CalcHMACSHA1
-	add r2, sp, #0x4
-	mov r3, #0x0
-_020D2374:
-	ldr r1, [r2, #0x0]
-	ldr r0, [r4, r3]
-	cmp r1, r0
-	bne _020D2394
-	add r3, r3, #0x4
-	cmp r3, #0x14
-	add r2, r2, #0x4
-	blo _020D2374
-_020D2394:
-	cmp r3, #0x14
-	moveq r0, #0x1
-	movne r0, #0x0
-	add sp, sp, #0x58
-	ldmia sp!, {r4-r6,lr}
-	bx lr
-	.balign 4
-_020D23AC: .word 0x02106834
-_020D23B0: .word 0x02106838
-
-	arm_func_start FS_LoadOverlayImage
-FS_LoadOverlayImage: ; 0x020D23B4
-	stmdb sp!, {r4-r5,lr}
-	sub sp, sp, #0x54
-	mov r5, r0
-	add r0, sp, #0x8
-	bl FS_InitFile
-_020D23C8:
-	add r0, sp, #0x0
-	mov r1, r5
-	bl FS_GetOverlayFileID
-	add r1, sp, #0x0
-	add r0, sp, #0x8
-	ldmia r1, {r1, r2}
-	bl FS_OpenFileFast
-	cmp r0, #0x0
-	addeq sp, sp, #0x54
-	moveq r0, #0x0
-	ldmeqia sp!, {r4-r5, lr}
-	bxeq lr
-	mov r0, r5
-	bl FSi_GetOverlayBinarySize
-	mov r4, r0
-	mov r0, r5
-	bl FS_ClearOverlayImage
-	ldr r1, [r5, #0x4]
-	add r0, sp, #0x8
-	mov r2, r4
-	bl FS_ReadFile
-	cmp r4, r0
-	beq _020D243C
-	add r0, sp, #0x8
-	bl FS_CloseFile
-	add sp, sp, #0x54
-	mov r0, #0x0
-	ldmia sp!, {r4-r5, lr}
-	bx lr
-_020D243C:
-	add r0, sp, #0x8
-	bl FS_CloseFile
-	mov r0, #0x1
-	add sp, sp, #0x54
-	ldmia sp!, {r4-r5, lr}
-	bx lr
-
-	arm_func_start FS_LoadOverlayImageAsync
-FS_LoadOverlayImageAsync: ; 0x020D2454
-	stmdb sp!, {r4-r6,lr}
-	sub sp, sp, #0x8
-	mov r5, r1
-	mov r6, r0
-	mov r0, r5
-	bl FS_InitFile
-_020D246C:
-	add r0, sp, #0x0
-	mov r1, r6
-	bl FS_GetOverlayFileID
-	add r1, sp, #0x0
-	mov r0, r5
-	ldmia r1, {r1, r2}
-	bl FS_OpenFileFast
-	cmp r0, #0x0
-	addeq sp, sp, #0x8
-	moveq r0, #0x0
-	ldmeqia sp!, {r4-r6, lr}
-	bxeq lr
-	mov r0, r6
-	bl FSi_GetOverlayBinarySize
-	mov r4, r0
-	mov r0, r6
-	bl FS_ClearOverlayImage
-	ldr r1, [r6, #0x4]
-	mov r0, r5
-	mov r2, r4
-	bl FS_ReadFileAsync
-	cmp r4, r0
-	addeq sp, sp, #0x8
-	moveq r0, #0x1
-	ldmeqia sp!, {r4-r6, lr}
-	bxeq lr
-	mov r0, r5
-	bl FS_CloseFile
-	mov r0, #0x0
-	add sp, sp, #0x8
-	ldmia sp!, {r4-r6, lr}
-	bx lr
-
-	arm_func_start FS_LoadOverlayInfo
-FS_LoadOverlayInfo:
-	stmdb sp!, {r4-r5,lr}
-	sub sp, sp, #0x64
-	movs r4, r1
-	mov r5, r0
-	ldreq r0, _020D25EC ; =0x021D5404
-	ldrne r0, _020D25F0 ; =0x021D540C
-	ldr r3, [r0, #0x0]
-	cmp r3, #0x0
-	beq _020D25A8
-	ldr r0, [r0, #0x4]
-	mov r2, r2, lsl #0x5
-	cmp r2, r0
-	addcs sp, sp, #0x64
-	movcs r0, #0x0
-	ldmcsia sp!, {r4-r5,lr}
-	bxcs lr
-	add r0, r3, r2
-	mov r1, r5
-	mov r2, #0x20
-	bl MI_CpuCopy8
-	add r0, sp, #0x18
-	str r4, [r5, #0x20]
-	bl FS_InitFile
-	add r0, sp, #0x10
-	mov r1, r5
-	bl FS_GetOverlayFileID
-	add r1, sp, #0x10
-	add r0, sp, #0x18
-	ldmia r1, {r1-r2}
-	bl FS_OpenFileFast
-_020D2564:
-	cmp r0, #0x0
-	addeq sp, sp, #0x64
-	moveq r0, #0x0
-	ldmeqia sp!, {r4-r5,lr}
-	bxeq lr
-	ldr r1, [sp, #0x3c]
-	add r0, sp, #0x18
-	str r1, [r5, #0x24]
-	ldr r2, [sp, #0x40]
-	ldr r1, [sp, #0x3c]
-	sub r1, r2, r1
-	str r1, [r5, #0x28]
-	bl FS_CloseFile
-	add sp, sp, #0x64
-	mov r0, #0x1
-	ldmia sp!, {r4-r5,lr}
-	bx lr
-_020D25A8:
-	ldr r1, _020D25F4 ; =0x027FFE50
-	ldr ip, _020D25F8 ; =0x027FFE58
-	ldr r0, [r1, #0x0]
-	ldr r3, _020D25FC ; =0x021D5414
-	str r0, [sp, #0x0]
-	ldr r1, [r1, #0x4]
-	mov r0, r5
-	str r1, [sp, #0x4]
-	ldr r5, [r12, #0x0]
-	mov r1, r4
-	str r5, [sp, #0x8]
-	ldr r4, [r12, #0x4]
-	str r4, [sp, #0xc]
-	bl FSi_LoadOverlayInfoCore
-	add sp, sp, #0x64
-	ldmia sp!, {r4-r5,lr}
-	bx lr
-	.balign 4
-_020D25EC: .word 0x021D5404
-_020D25F0: .word 0x021D540C
-_020D25F4: .word 0x027FFE50
-_020D25F8: .word 0x027FFE58
-_020D25FC: .word 0x021D5414
-
-	arm_func_start FSi_LoadOverlayInfoCore
-FSi_LoadOverlayInfoCore: ; 0x020D2600
-	stmdb sp!, {r4-r9,lr}
-	sub sp, sp, #0x54
-	movs r9, r1
-	ldreq r5, [sp, #0x74]
-	ldreq r6, [sp, #0x70]
-	ldrne r5, [sp, #0x7c]
-	ldrne r6, [sp, #0x78]
-	mov r7, r2, lsl #0x5
-	cmp r7, r5
-	mov r4, r0
-	mov r8, r3
-	addcs sp, sp, #0x54
-	movcs r0, #0x0
-	ldmcsia sp!, {r4-r9,lr}
-	bxcs lr
-	add r0, sp, #0xc
-	bl FS_InitFile
-	mvn r12, #0x0
-	add r0, sp, #0xc
-	mov r1, r8
-	add r2, r6, r7
-	add r3, r6, r5
-	str r12, [sp, #0x0]
-	bl FS_OpenFileDirect
-_020D2660:
-	cmp r0, #0
-	addeq sp, sp, #0x54
-	moveq r0, #0
-	ldmeqia sp!, {r4-r9, lr}
-	bxeq lr
-	add r0, sp, #12
-	mov r1, r4
-	mov r2, #32
-	bl FS_ReadFile
-	cmp r0, #32
-	beq _020D26A4
-	add r0, sp, #12
-	bl FS_CloseFile
-	add sp, sp, #0x54
-	mov r0, #0x0
-	ldmia sp!, {r4-r9, lr}
-	bx lr
-_020D26A4:
-	add r0, sp, #0xC
-	bl FS_CloseFile
-	add r0, sp, #0x4
-	mov r1, r4
-	str r9, [r4, #0x20]
-	bl FS_GetOverlayFileID
-	add r1, sp, #0x4
-	add r0, sp, #0xC
-	ldmia r1, {r1, r2}
-	bl FS_OpenFileFast
-	cmp r0, #0x0
-	addeq sp, sp, #0x54
-	moveq r0, #0x0
-	ldmeqia sp!, {r4-r9, lr}
-	bxeq lr
-	ldr r1, [sp, #0x30]
-	add r0, sp, #0xC
-	str r1, [r4, #0x24]
-	ldr r2, [sp, #0x34]
-	ldr r1, [sp, #0x30]
-	sub r1, r2, r1
-	str r1, [r4, #0x28]
-	bl FS_CloseFile
-	mov r0, #0x1
-	add sp, sp, #0x54
-	ldmia sp!, {r4-r9, lr}
-	bx lr
-
-	arm_func_start FS_GetOverlayFileID
-FS_GetOverlayFileID: ; 0x020D2710
-	sub sp, sp, #0x8
-	ldr r2, _020D2734 ; =0x021D5414
-	str r2, [sp, #0x0]
-	ldr r1, [r1, #0x18]
-	str r1, [sp, #0x4]
-	str r2, [r0, #0x0]
-	str r1, [r0, #0x4]
-	add sp, sp, #0x8
-	bx lr
-	.balign 4
-_020D2734: .word 0x021D5414
-
-	arm_func_start FS_ClearOverlayImage
-FS_ClearOverlayImage: ; 0x020D2738
-	stmdb sp!, {r4-r6,lr}
-	ldr r5, [r0, #0x8]
-	ldr r1, [r0, #0xc]
-	ldr r6, [r0, #0x4]
-	add r4, r5, r1
-	mov r0, r6
-	mov r1, r4
-	bl IC_InvalidateRange
-	mov r0, r6
-	mov r1, r4
-	bl DC_InvalidateRange
-	add r0, r6, r5
-	sub r2, r4, r5
-	mov r1, #0x0
-	bl MI_CpuFill8
-	ldmia sp!, {r4-r6,lr}
-	bx lr
-
-	arm_func_start FSi_GetOverlayBinarySize
-FSi_GetOverlayBinarySize: ; 0x020D277C
-	ldrb r1, [r0, #0x1f]
-	ands r1, r1, #0x1
-	ldrne r0, [r0, #0x1c]
-	movne r0, r0, lsl #0x8
-	movne r0, r0, lsr #0x8
-	ldreq r0, [r0, #0x8]
-	bx lr
diff --git a/arm9/asm/unk_020023C0.s b/arm9/asm/unk_020023C0.s
index ef8f06bf..0e8dfbdf 100644
--- a/arm9/asm/unk_020023C0.s
+++ b/arm9/asm/unk_020023C0.s
@@ -7792,551 +7792,3 @@ _02005F36:
 	mov r0, #0x0
 	bx lr
 	.balign 4
-
-	; Code that handles overlays?
-
-	thumb_func_start FreeOverlayAllocation
-FreeOverlayAllocation: ; 0x02005F3C
-	push {r4, lr}
-	add r4, r0, #0x0
-	ldr r0, [r4, #0x4]
-	cmp r0, #0x1
-	beq _02005F4A
-	bl ErrorHandling
-_02005F4A:
-	ldr r1, [r4, #0x0]
-	mov r0, #0x0
-	blx FS_UnloadOverlay
-	cmp r0, #0x1
-	beq _02005F5A
-	bl ErrorHandling
-_02005F5A:
-	mov r0, #0x0
-	str r0, [r4, #0x4]
-	pop {r4, pc}
-
-	thumb_func_start UnloadOverlayByID
-UnloadOverlayByID: ; 0x02005F60
-	push {r4, lr}
-	add r4, r0, #0x0
-	bl GetOverlayLoadDestination
-	bl GetLoadedOverlaysInRegion
-	mov r2, #0x0
-	add r3, r0, #0x0
-_02005F70:
-	ldr r1, [r3, #0x4]
-	cmp r1, #0x1
-	bne _02005F86
-	ldr r1, [r3, #0x0]
-	cmp r4, r1
-	bne _02005F86
-	lsl r1, r2, #0x3
-	add r0, r0, r1
-	bl FreeOverlayAllocation
-	pop {r4, pc}
-_02005F86:
-	add r2, r2, #0x1
-	add r3, #0x8
-	cmp r2, #0x8
-	blt _02005F70
-	pop {r4, pc}
-
-	thumb_func_start GetOverlayLoadDestination
-GetOverlayLoadDestination: ; 0x02005F90
-	push {lr}
-	sub sp, #0x2c
-	add r2, r0, #0x0
-	add r0, sp, #0x0
-	mov r1, #0x0
-	blx FS_LoadOverlayInfo
-	cmp r0, #0x1
-	beq _02005FA6
-	bl ErrorHandling
-_02005FA6:
-	mov r0, #0x2
-	ldr r2, [sp, #0x4]
-	lsl r0, r0, #0x18
-	cmp r2, r0
-	bhi _02005FBC
-	lsr r0, r0, #0x1
-	cmp r2, r0
-	blo _02005FBC
-	add sp, #0x2c
-	mov r0, #0x1
-	pop {pc}
-_02005FBC:
-	mov r0, #0x1
-	ldr r1, _02005FD8 ; =0x027E0000
-	lsl r0, r0, #0xe
-	add r0, r1, r0
-	cmp r2, r0
-	bhi _02005FD2
-	cmp r2, r1
-	blo _02005FD2
-	add sp, #0x2c
-	mov r0, #0x2
-	pop {pc}
-_02005FD2:
-	mov r0, #0x0
-	add sp, #0x2c
-	pop {pc}
-	.balign 4
-_02005FD8: .word 0x027E0000
-
-	thumb_func_start HandleLoadOverlay
-HandleLoadOverlay: ; 0x02005FDC
-	push {r3-r7, lr}
-	add r4, r1, #0x0
-	mov r1, #0x0
-	mvn r1, r1
-	add r5, r0, #0x0
-	str r1, [sp, #0x0]
-	bl CanOverlayBeLoaded
-	cmp r0, #0x0
-	bne _02005FF4
-	mov r0, #0x0
-	pop {r3-r7, pc}
-_02005FF4:
-	add r0, r5, #0x0
-	bl GetOverlayLoadDestination
-	add r7, r0, #0x0
-	bl GetLoadedOverlaysInRegion
-	add r3, r0, #0x0
-	mov r6, #0x0
-	add r1, r3, #0x0
-_02006006:
-	ldr r0, [r1, #0x4]
-	cmp r0, #0x0
-	bne _02006018
-	lsl r1, r6, #0x3
-	add r2, r3, r1
-	mov r0, #0x1
-	str r0, [r2, #0x4]
-	str r5, [r3, r1]
-	b _02006020
-_02006018:
-	add r6, r6, #0x1
-	add r1, #0x8
-	cmp r6, #0x8
-	blt _02006006
-_02006020:
-	cmp r6, #0x8
-	blt _0200602C
-	bl ErrorHandling
-	mov r0, #0x0
-	pop {r3-r7, pc}
-_0200602C:
-	sub r6, r7, #0x1
-	cmp r6, #0x1
-	bhi _0200603C
-	mov r0, #0x0
-	mvn r0, r0
-	blx FS_SetDefaultDMA
-	str r0, [sp, #0x0]
-_0200603C:
-	cmp r4, #0x0
-	beq _0200604A
-	cmp r4, #0x1
-	beq _02006056
-	cmp r4, #0x2
-	beq _02006062
-	b _0200606E
-_0200604A:
-	mov r0, #0x0
-	add r1, r5, #0x0
-	bl LoadOverlayNormal
-	add r4, r0, #0x0
-	b _02006076
-_02006056:
-	mov r0, #0x0
-	add r1, r5, #0x0
-	bl LoadOverlayNoInit
-	add r4, r0, #0x0
-	b _02006076
-_02006062:
-	mov r0, #0x0
-	add r1, r5, #0x0
-	bl LoadOverlayNoInitAsync
-	add r4, r0, #0x0
-	b _02006076
-_0200606E:
-	bl ErrorHandling
-	mov r0, #0x0
-	pop {r3-r7, pc}
-_02006076:
-	cmp r6, #0x1
-	bhi _02006080
-	ldr r0, [sp, #0x0]
-	blx FS_SetDefaultDMA
-_02006080:
-	cmp r4, #0x0
-	bne _0200608C
-	bl ErrorHandling
-	mov r0, #0x0
-	pop {r3-r7, pc}
-_0200608C:
-	mov r0, #0x1
-	pop {r3-r7, pc}
-
-	thumb_func_start CanOverlayBeLoaded
-CanOverlayBeLoaded: ; 0x02006090
-	push {r3-r7, lr}
-	sub sp, #0x10
-	add r1, sp, #0xc
-	add r2, sp, #0x8
-	add r4, r0, #0x0
-	bl GetOverlayRamBounds
-	cmp r0, #0x0
-	bne _020060A8
-	add sp, #0x10
-	mov r0, #0x0
-	pop {r3-r7, pc}
-_020060A8:
-	add r0, r4, #0x0
-	bl GetOverlayLoadDestination
-	bl GetLoadedOverlaysInRegion
-	add r5, r0, #0x0
-	mov r4, #0x0
-	add r6, sp, #0x4
-	add r7, sp, #0x0
-_020060BA:
-	ldr r0, [r5, #0x4]
-	cmp r0, #0x1
-	bne _020060FC
-	ldr r0, [r5, #0x0]
-	add r1, r6, #0x0
-	add r2, r7, #0x0
-	bl GetOverlayRamBounds
-	cmp r0, #0x1
-	bne _020060FC
-	ldr r1, [sp, #0x4]
-	ldr r2, [sp, #0xc]
-	cmp r2, r1
-	blo _020060DC
-	ldr r0, [sp, #0x0]
-	cmp r2, r0
-	blo _020060F2
-_020060DC:
-	ldr r3, [sp, #0x8]
-	cmp r3, r1
-	bls _020060E8
-	ldr r0, [sp, #0x0]
-	cmp r3, r0
-	bls _020060F2
-_020060E8:
-	cmp r2, r1
-	bhi _020060FC
-	ldr r0, [sp, #0x0]
-	cmp r3, r0
-	blo _020060FC
-_020060F2:
-	bl ErrorHandling
-	add sp, #0x10
-	mov r0, #0x0
-	pop {r3-r7, pc}
-_020060FC:
-	add r4, r4, #0x1
-	add r5, #0x8
-	cmp r4, #0x8
-	blt _020060BA
-	mov r0, #0x1
-	add sp, #0x10
-	pop {r3-r7, pc}
-	.balign 4
-
-	thumb_func_start GetLoadedOverlaysInRegion
-GetLoadedOverlaysInRegion: ; 0x0200610C
-	cmp r0, #0x0
-	beq _02006118
-	cmp r0, #0x1
-	beq _0200611C
-	cmp r0, #0x2
-	beq _02006120
-_02006118:
-	ldr r0, _02006124 ; =0x021C45B0
-	bx lr
-_0200611C:
-	ldr r0, _02006128 ; =0x021C45F0
-	bx lr
-_02006120:
-	ldr r0, _0200612C ; =0x021C4630
-	bx lr
-	.balign 4
-_02006124: .word 0x021C45B0
-_02006128: .word 0x021C45F0
-_0200612C: .word 0x021C4630
-
-	thumb_func_start GetOverlayRamBounds
-GetOverlayRamBounds: ; 0x02006130
-	push {r4-r5, lr}
-	sub sp, #0x2c
-	add r3, r0, #0x0
-	add r5, r1, #0x0
-	add r4, r2, #0x0
-	add r0, sp, #0x0
-	mov r1, #0x0
-	add r2, r3, #0x0
-	blx FS_LoadOverlayInfo
-	cmp r0, #0x0
-	bne _02006152
-	bl ErrorHandling
-	add sp, #0x2c
-	mov r0, #0x0
-	pop {r4-r5, pc}
-_02006152:
-	ldr r2, [sp, #0x4]
-	str r2, [r5, #0x0]
-	ldr r1, [sp, #0x8]
-	ldr r0, [sp, #0xc]
-	add r0, r1, r0
-	add r0, r2, r0
-	str r0, [r4, #0x0]
-	mov r0, #0x1
-	add sp, #0x2c
-	pop {r4-r5, pc}
-	.balign 4
-
-	thumb_func_start LoadOverlayNormal
-LoadOverlayNormal: ; 0x02006168
-	ldr r3, _0200616C ; =FS_LoadOverlay
-	bx r3
-	.balign 4
-_0200616C: .word FS_LoadOverlay
-
-	thumb_func_start LoadOverlayNoInit
-LoadOverlayNoInit: ; 0x02006170
-	push {lr}
-	sub sp, #0x2c
-	add r3, r0, #0x0
-	add r2, r1, #0x0
-	add r0, sp, #0x0
-	add r1, r3, #0x0
-	blx FS_LoadOverlayInfo
-	cmp r0, #0x0
-	bne _0200618A
-	add sp, #0x2c
-	mov r0, #0x0
-	pop {pc}
-_0200618A:
-	add r0, sp, #0x0
-	blx FS_LoadOverlayImage
-	cmp r0, #0x0
-	bne _0200619A
-	add sp, #0x2c
-	mov r0, #0x0
-	pop {pc}
-_0200619A:
-	add r0, sp, #0x0
-	blx FS_StartOverlay
-	mov r0, #0x1
-	add sp, #0x2c
-	pop {pc}
-	.balign 4
-
-	thumb_func_start LoadOverlayNoInitAsync
-LoadOverlayNoInitAsync: ; 0x020061A8
-	push {lr}
-	sub sp, #0x74
-	add r3, r0, #0x0
-	add r2, r1, #0x0
-	add r0, sp, #0x0
-	add r1, r3, #0x0
-	blx FS_LoadOverlayInfo
-	cmp r0, #0x0
-	bne _020061C2
-	add sp, #0x74
-	mov r0, #0x0
-	pop {pc}
-_020061C2:
-	add r0, sp, #0x2c
-	blx FS_InitFile
-	add r0, sp, #0x0
-	add r1, sp, #0x2c
-	blx FS_LoadOverlayImageAsync
-	add r0, sp, #0x2c
-	blx FS_WaitAsync
-	add r0, sp, #0x2c
-	blx FS_CloseFile
-	add r0, sp, #0x0
-	blx FS_StartOverlay
-	mov r0, #0x1
-	add sp, #0x74
-	pop {pc}
-
-	thumb_func_start FUN_020061E8
-FUN_020061E8: ; 0x020061E8
-	push {r3-r7, lr}
-	add r5, r1, #0x0
-	add r6, r0, #0x0
-	add r7, r2, #0x0
-	cmp r5, #0x0
-	beq _0200620C
-	add r0, r3, #0x0
-	bl FUN_02016998
-	add r4, r0, #0x0
-	bne _02006202
-	mov r0, #0x0
-	pop {r3-r7, pc}
-_02006202:
-	mov r1, #0x0
-	add r2, r5, #0x0
-	blx Call_FillMemWithValue
-	b _0200620E
-_0200620C:
-	mov r4, #0x0
-_0200620E:
-	add r0, r6, #0x0
-	add r1, r4, #0x0
-	add r2, r7, #0x0
-	bl FUN_0200CA44
-	pop {r3-r7, pc}
-	.balign 4
-
-	thumb_func_start FUN_0200621C
-FUN_0200621C: ; 0x0200621C
-	push {r4, lr}
-	add r4, r0, #0x0
-	bl FUN_0201B6C8
-	cmp r0, #0x0
-	beq _0200622C
-	bl FUN_02016A18
-_0200622C:
-	add r0, r4, #0x0
-	bl FUN_0200CAB4
-	pop {r4, pc}
-
-	thumb_func_start FUN_02006234
-FUN_02006234: ; 0x02006234
-	push {r3-r5, lr}
-	add r5, r0, #0x0
-	add r4, r1, #0x0
-	add r0, r2, #0x0
-	mov r1, #0x28
-	bl FUN_02016998
-	add r3, r0, #0x0
-	add r2, r3, #0x0
-	ldmia r5!, {r0-r1}
-	stmia r2!, {r0-r1}
-	ldmia r5!, {r0-r1}
-	stmia r2!, {r0-r1}
-	mov r0, #0x0
-	str r0, [r3, #0x10]
-	str r0, [r3, #0x14]
-	str r4, [r3, #0x18]
-	str r0, [r3, #0x1c]
-	str r0, [r3, #0x20]
-	str r0, [r3, #0x24]
-	add r0, r3, #0x0
-	pop {r3-r5, pc}
-
-	thumb_func_start FUN_02006260
-FUN_02006260: ; 0x02006260
-	ldr r3, _02006264 ; =FUN_02016A18
-	bx r3
-	.balign 4
-_02006264: .word FUN_02016A18 
-
-	thumb_func_start FUN_02006268
-FUN_02006268: ; 0x02006268
-	push {r4, lr}
-	add r4, r0, #0x0
-	add r0, r2, #0x0
-	bl FUN_02016998
-	str r0, [r4, #0x1c]
-	pop {r4, pc}
-	.balign 4
-
-	thumb_func_start FUN_02006278
-FUN_02006278: ; 0x02006278
-	ldr r0, [r0, #0x1c]
-	bx lr
-
-	thumb_func_start FUN_0200627C
-FUN_0200627C: ; 0x0200627C
-	push {r4, lr}
-	add r4, r0, #0x0
-	ldr r0, [r4, #0x1c]
-	bl FUN_02016A18
-	mov r0, #0x0
-	str r0, [r4, #0x1c]
-	pop {r4, pc}
-
-	thumb_func_start FUN_0200628C
-FUN_0200628C: ; 0x0200628C
-	ldr r0, [r0, #0x18]
-	bx lr
-
-	thumb_func_start FUN_02006290
-FUN_02006290: ; 0x02006290
-	push {r4, lr}
-	add r4, r0, #0x0
-	ldr r1, [r4, #0x10]
-	cmp r1, #0x3
-	bhi _0200630E
-	add r1, r1, r1
-	add r1, pc
-	ldrh r1, [r1, #0x6]
-	lsl r1, r1, #0x10
-	asr r1, r1, #0x10
-	add pc, r1
-_020062A6: ; jump table (using 16-bit offset)
-	.short _020062AE - _020062A6 - 2; case 0
-	.short _020062C2 - _020062A6 - 2; case 1
-	.short _020062DA - _020062A6 - 2; case 2
-	.short _020062F0 - _020062A6 - 2; case 3
-_020062AE:
-	mov r1, #0x0
-	ldr r0, [r4, #0xc]
-	mvn r1, r1
-	cmp r0, r1
-	beq _020062BE
-	mov r1, #0x2
-	bl HandleLoadOverlay
-_020062BE:
-	mov r0, #0x1
-	str r0, [r4, #0x10]
-_020062C2:
-	add r1, r4, #0x0
-	ldr r2, [r4, #0x0]
-	add r0, r4, #0x0
-	add r1, #0x14
-	blx r2
-	cmp r0, #0x1
-	bne _0200630E
-	mov r0, #0x2
-	str r0, [r4, #0x10]
-	mov r0, #0x0
-	str r0, [r4, #0x14]
-	b _0200630E
-_020062DA:
-	add r1, r4, #0x0
-	ldr r2, [r4, #0x4]
-	add r1, #0x14
-	blx r2
-	cmp r0, #0x1
-	bne _0200630E
-	mov r0, #0x3
-	str r0, [r4, #0x10]
-	mov r0, #0x0
-	str r0, [r4, #0x14]
-	b _0200630E
-_020062F0:
-	add r1, r4, #0x0
-	ldr r2, [r4, #0x8]
-	add r1, #0x14
-	blx r2
-	cmp r0, #0x1
-	bne _0200630E
-	mov r1, #0x0
-	ldr r0, [r4, #0xc]
-	mvn r1, r1
-	cmp r0, r1
-	beq _0200630A
-	bl UnloadOverlayByID
-_0200630A:
-	mov r0, #0x1
-	pop {r4, pc}
-_0200630E:
-	mov r0, #0x0
-	pop {r4, pc}
-	.balign 4
diff --git a/arm9/asm/unk_020061E8.s b/arm9/asm/unk_020061E8.s
new file mode 100644
index 00000000..3b8df8d6
--- /dev/null
+++ b/arm9/asm/unk_020061E8.s
@@ -0,0 +1,181 @@
+	.include "asm/macros.inc"
+	.include "global.inc"
+	.section .text
+
+	thumb_func_start FUN_020061E8
+FUN_020061E8: ; 0x020061E8
+	push {r3-r7, lr}
+	add r5, r1, #0x0
+	add r6, r0, #0x0
+	add r7, r2, #0x0
+	cmp r5, #0x0
+	beq _0200620C
+	add r0, r3, #0x0
+	bl FUN_02016998
+	add r4, r0, #0x0
+	bne _02006202
+	mov r0, #0x0
+	pop {r3-r7, pc}
+_02006202:
+	mov r1, #0x0
+	add r2, r5, #0x0
+	blx Call_FillMemWithValue
+	b _0200620E
+_0200620C:
+	mov r4, #0x0
+_0200620E:
+	add r0, r6, #0x0
+	add r1, r4, #0x0
+	add r2, r7, #0x0
+	bl FUN_0200CA44
+	pop {r3-r7, pc}
+	.balign 4
+
+	thumb_func_start FUN_0200621C
+FUN_0200621C: ; 0x0200621C
+	push {r4, lr}
+	add r4, r0, #0x0
+	bl FUN_0201B6C8
+	cmp r0, #0x0
+	beq _0200622C
+	bl FUN_02016A18
+_0200622C:
+	add r0, r4, #0x0
+	bl FUN_0200CAB4
+	pop {r4, pc}
+
+	thumb_func_start FUN_02006234
+FUN_02006234: ; 0x02006234
+	push {r3-r5, lr}
+	add r5, r0, #0x0
+	add r4, r1, #0x0
+	add r0, r2, #0x0
+	mov r1, #0x28
+	bl FUN_02016998
+	add r3, r0, #0x0
+	add r2, r3, #0x0
+	ldmia r5!, {r0-r1}
+	stmia r2!, {r0-r1}
+	ldmia r5!, {r0-r1}
+	stmia r2!, {r0-r1}
+	mov r0, #0x0
+	str r0, [r3, #0x10]
+	str r0, [r3, #0x14]
+	str r4, [r3, #0x18]
+	str r0, [r3, #0x1c]
+	str r0, [r3, #0x20]
+	str r0, [r3, #0x24]
+	add r0, r3, #0x0
+	pop {r3-r5, pc}
+
+	thumb_func_start FUN_02006260
+FUN_02006260: ; 0x02006260
+	ldr r3, _02006264 ; =FUN_02016A18
+	bx r3
+	.balign 4
+_02006264: .word FUN_02016A18
+
+	thumb_func_start FUN_02006268
+FUN_02006268: ; 0x02006268
+	push {r4, lr}
+	add r4, r0, #0x0
+	add r0, r2, #0x0
+	bl FUN_02016998
+	str r0, [r4, #0x1c]
+	pop {r4, pc}
+	.balign 4
+
+	thumb_func_start FUN_02006278
+FUN_02006278: ; 0x02006278
+	ldr r0, [r0, #0x1c]
+	bx lr
+
+	thumb_func_start FUN_0200627C
+FUN_0200627C: ; 0x0200627C
+	push {r4, lr}
+	add r4, r0, #0x0
+	ldr r0, [r4, #0x1c]
+	bl FUN_02016A18
+	mov r0, #0x0
+	str r0, [r4, #0x1c]
+	pop {r4, pc}
+
+	thumb_func_start FUN_0200628C
+FUN_0200628C: ; 0x0200628C
+	ldr r0, [r0, #0x18]
+	bx lr
+
+	thumb_func_start FUN_02006290
+FUN_02006290: ; 0x02006290
+	push {r4, lr}
+	add r4, r0, #0x0
+	ldr r1, [r4, #0x10]
+	cmp r1, #0x3
+	bhi _0200630E
+	add r1, r1, r1
+	add r1, pc
+	ldrh r1, [r1, #0x6]
+	lsl r1, r1, #0x10
+	asr r1, r1, #0x10
+	add pc, r1
+_020062A6: ; jump table (using 16-bit offset)
+	.short _020062AE - _020062A6 - 2; case 0
+	.short _020062C2 - _020062A6 - 2; case 1
+	.short _020062DA - _020062A6 - 2; case 2
+	.short _020062F0 - _020062A6 - 2; case 3
+_020062AE:
+	mov r1, #0x0
+	ldr r0, [r4, #0xc]
+	mvn r1, r1
+	cmp r0, r1
+	beq _020062BE
+	mov r1, #0x2
+	bl HandleLoadOverlay
+_020062BE:
+	mov r0, #0x1
+	str r0, [r4, #0x10]
+_020062C2:
+	add r1, r4, #0x0
+	ldr r2, [r4, #0x0]
+	add r0, r4, #0x0
+	add r1, #0x14
+	blx r2
+	cmp r0, #0x1
+	bne _0200630E
+	mov r0, #0x2
+	str r0, [r4, #0x10]
+	mov r0, #0x0
+	str r0, [r4, #0x14]
+	b _0200630E
+_020062DA:
+	add r1, r4, #0x0
+	ldr r2, [r4, #0x4]
+	add r1, #0x14
+	blx r2
+	cmp r0, #0x1
+	bne _0200630E
+	mov r0, #0x3
+	str r0, [r4, #0x10]
+	mov r0, #0x0
+	str r0, [r4, #0x14]
+	b _0200630E
+_020062F0:
+	add r1, r4, #0x0
+	ldr r2, [r4, #0x8]
+	add r1, #0x14
+	blx r2
+	cmp r0, #0x1
+	bne _0200630E
+	mov r1, #0x0
+	ldr r0, [r4, #0xc]
+	mvn r1, r1
+	cmp r0, r1
+	beq _0200630A
+	bl UnloadOverlayByID
+_0200630A:
+	mov r0, #0x1
+	pop {r4, pc}
+_0200630E:
+	mov r0, #0x0
+	pop {r4, pc}
+	.balign 4
diff --git a/arm9/global.inc b/arm9/global.inc
index ed81acc6..b74fe006 100644
--- a/arm9/global.inc
+++ b/arm9/global.inc
@@ -5111,6 +5111,15 @@
 .extern MOD11_02249E58

 .extern MOD11_0224B310

 .extern MOD11_0224C12C

+.extern FSi_ExecuteSyncCommand

+.extern FSi_InitRom

+.extern FSi_SendCommand

+.extern FSi_TranslateCommand

+.extern FS_NotifyArchiveAsyncEnd

+.extern FS_ResumeArchive

+.extern FS_SuspendArchive

+.extern FS_ReadFileAsync

+.extern FSi_ReleaseCommand

 .extern FX_DivS32

 .extern G2x_ChangeBlendBrightness_

 .extern GX_DisableBankForARM7

diff --git a/arm9/lib/include/CARD_rom.h b/arm9/lib/include/CARD_rom.h
new file mode 100644
index 00000000..327bc995
--- /dev/null
+++ b/arm9/lib/include/CARD_rom.h
@@ -0,0 +1,11 @@
+#ifndef NITRO_CARD_ROM_H_
+#define NITRO_CARD_ROM_H_
+
+typedef struct
+{
+    u32 offset;
+    u32 length;
+}
+CARDRomRegion;
+
+#endif //NITRO_CARD_ROM_H_
diff --git a/arm9/lib/include/FS_archive.h b/arm9/lib/include/FS_archive.h
new file mode 100644
index 00000000..66840b32
--- /dev/null
+++ b/arm9/lib/include/FS_archive.h
@@ -0,0 +1,113 @@
+#ifndef NITRO_FS_ARCHIVE_H_
+#define NITRO_FS_ARCHIVE_H_
+
+#include "nitro.h"
+
+#include "OS_thread.h"
+
+struct FSFile;
+struct FSArchive;
+
+#define FS_ARCHIVE_NAME_LEN_MAX 3
+
+#define	FS_ARCHIVE_FLAG_REGISTER	0x00000001
+#define	FS_ARCHIVE_FLAG_LOADED		0x00000002
+#define	FS_ARCHIVE_FLAG_TABLE_LOAD	0x00000004
+#define	FS_ARCHIVE_FLAG_SUSPEND		0x00000008
+#define	FS_ARCHIVE_FLAG_RUNNING		0x00000010
+#define	FS_ARCHIVE_FLAG_CANCELING	0x00000020
+#define	FS_ARCHIVE_FLAG_SUSPENDING	0x00000040
+#define	FS_ARCHIVE_FLAG_UNLOADING	0x00000080
+#define	FS_ARCHIVE_FLAG_IS_ASYNC	0x00000100
+#define	FS_ARCHIVE_FLAG_IS_SYNC		0x00000200
+
+typedef enum {
+    FS_COMMAND_ASYNC_BEGIN = 0,
+    FS_COMMAND_READFILE = FS_COMMAND_ASYNC_BEGIN,
+    FS_COMMAND_WRITEFILE,
+    FS_COMMAND_ASYNC_END,
+
+    FS_COMMAND_SYNC_BEGIN = FS_COMMAND_ASYNC_END,
+    FS_COMMAND_SEEKDIR = FS_COMMAND_SYNC_BEGIN,
+    FS_COMMAND_READDIR,
+    FS_COMMAND_FINDPATH,
+    FS_COMMAND_GETPATH,
+    FS_COMMAND_OPENFILEFAST,
+    FS_COMMAND_OPENFILEDIRECT,
+    FS_COMMAND_CLOSEFILE,
+    FS_COMMAND_SYNC_END,
+
+    FS_COMMAND_STATUS_BEGIN = FS_COMMAND_SYNC_END,
+    FS_COMMAND_ACTIVATE = FS_COMMAND_STATUS_BEGIN,
+    FS_COMMAND_IDLE,
+    FS_COMMAND_SUSPEND,
+    FS_COMMAND_RESUME,
+    FS_COMMAND_STATUS_END,
+
+    FS_COMMAND_INVALID
+} FSCommandType;
+
+typedef enum {
+    FS_RESULT_SUCCESS = 0,
+    FS_RESULT_FAILURE,
+    FS_RESULT_BUSY,
+    FS_RESULT_CANCELED,
+    FS_RESULT_CANCELLED = FS_RESULT_CANCELED, // SDK alias
+    FS_RESULT_UNSUPPORTED,
+    FS_RESULT_ERROR,
+    FS_RESULT_PROC_ASYNC,
+    FS_RESULT_PROC_DEFAULT,
+    FS_RESULT_PROC_UNKNOWN
+}
+FSResult;
+
+typedef FSResult (*FS_ARCHIVE_READ_FUNC) (struct FSArchive *p, void *dst, u32 pos, u32 size);
+typedef FSResult (*FS_ARCHIVE_WRITE_FUNC) (struct FSArchive *p, const void *src, u32 pos, u32 size);
+typedef FSResult (*FS_ARCHIVE_PROC_FUNC) (struct FSFile *, FSCommandType);
+
+typedef struct
+{
+    struct FSFile * prev;
+    struct FSFile * next;
+}
+FSFileLink;
+
+typedef struct FSArchive
+{
+    union
+    {
+        char ptr[4];
+        u32 pack;
+    } name;
+    struct FSArchive * prev;
+    struct FSArchive * next;
+    OSThreadQueue sync_q;
+    OSThreadQueue stat_q;
+    u32 flag;
+    FSFileLink list;
+    u32 base;
+    u32 fat;
+    u32 fat_size;
+    u32 fnt;
+    u32 fnt_size;
+    u32 fat_bak;
+    u32 fnt_bak;
+    void * load_mem;
+    FS_ARCHIVE_READ_FUNC read_func;
+    FS_ARCHIVE_WRITE_FUNC write_func;
+    FS_ARCHIVE_READ_FUNC table_func;
+    FS_ARCHIVE_PROC_FUNC proc;
+    u32 proc_flag;
+} FSArchive;
+
+FSArchive * const FS_FindArchive(const char * path, int offset);
+
+static inline BOOL FS_IsArchiveLoaded(volatile const FSArchive * p_arc)
+{
+    return (p_arc->flag & FS_ARCHIVE_FLAG_LOADED) ? TRUE : FALSE;
+}
+
+BOOL FSi_SendCommand(struct FSFile * file, FSCommandType command);
+BOOL FSi_ExecuteSyncCommand(struct FSFile * file);
+
+#endif //NITRO_FS_ARCHIVE_H_
diff --git a/arm9/lib/include/FS_file.h b/arm9/lib/include/FS_file.h
new file mode 100644
index 00000000..4871b660
--- /dev/null
+++ b/arm9/lib/include/FS_file.h
@@ -0,0 +1,179 @@
+#ifndef NITRO_FS_FILE_H_
+#define NITRO_FS_FILE_H_
+
+#include "nitro.h"
+
+#include "FS_archive.h"
+
+#define	FS_FILE_STATUS_BUSY			0x00000001
+#define	FS_FILE_STATUS_CANCEL		0x00000002
+#define	FS_FILE_STATUS_SYNC			0x00000004
+#define	FS_FILE_STATUS_ASYNC		0x00000008
+#define	FS_FILE_STATUS_IS_FILE		0x00000010
+#define	FS_FILE_STATUS_IS_DIR		0x00000020
+#define FS_FILE_STATUS_OPERATING    0x00000040
+
+typedef enum FSSeekFileMode
+{
+    FS_SEEK_SET = 0,
+    FS_SEEK_CUR,
+    FS_SEEK_END
+} FSSeekFileMode;
+
+struct FSFile;
+
+#define FS_DMA_NOT_USE ((u32)~0)
+
+typedef struct FSDirPos
+{
+    struct FSArchive *arc;
+    u16 own_id;
+    u16 index;
+    u32 pos;
+}
+FSDirPos;
+
+typedef struct FSFileID
+{
+    struct FSArchive *arc;
+    u32 file_id;
+}
+FSFileID;
+
+typedef struct
+{
+    union
+    {
+        FSFileID file_id;
+        FSDirPos dir_id;
+    };
+    u32 is_directory;
+    u32 name_len;
+    char name[128];
+}
+FSDirEntry;
+
+
+typedef struct
+{
+    FSDirPos pos;
+}
+FSSeekDirInfo;
+
+
+typedef struct
+{
+    FSDirEntry *p_entry;
+    BOOL skip_string;
+}
+FSReadDirInfo;
+
+
+typedef struct
+{
+    FSDirPos pos;
+    const char *path;
+    BOOL find_directory;
+    union
+    {
+        FSFileID *file;
+        FSDirPos *dir;
+    }
+        result;
+}
+FSFindPathInfo;
+
+
+typedef struct
+{
+    u8 *buf;
+    u32 buf_len;
+    u16 total_len;
+    u16 dir_id;
+}
+FSGetPathInfo;
+
+
+typedef struct
+{
+    FSFileID id;
+}
+FSOpenFileFastInfo;
+
+
+typedef struct
+{
+    u32 top;
+    u32 bottom;
+    u32 index;
+}
+FSOpenFileDirectInfo;
+
+
+typedef struct
+{
+    u32 reserved;
+}
+FSCloseFileInfo;
+
+
+typedef struct
+{
+    void *dst;
+    u32 len_org;
+    u32 len;
+}
+FSReadFileInfo;
+
+
+typedef struct
+{
+    const void *src;
+    u32 len_org;
+    u32 len;
+}
+FSWriteFileInfo;
+
+typedef struct FSFile
+{
+    FSFileLink link;
+    struct FSArchive *arc;
+    u32 stat;
+    FSCommandType command;
+    FSResult error;
+    OSThreadQueue queue[1];
+    union {
+        struct
+        {
+            u32 own_id;
+            u32 top;
+            u32 bottom;
+            u32 pos;
+        } file;
+        struct
+        {
+            FSDirPos pos;
+            u32 parent;
+        } dir;
+    } prop;
+
+    union {
+        FSReadFileInfo readfile;
+        FSWriteFileInfo writefile;
+
+        FSSeekDirInfo seekdir;
+        FSReadDirInfo readdir;
+        FSFindPathInfo findpath;
+        FSGetPathInfo getpath;
+        FSOpenFileFastInfo openfilefast;
+        FSOpenFileDirectInfo openfiledirect;
+        FSCloseFileInfo closefile;
+    } arg;
+}
+FSFile;
+
+u32 FS_SetDefaultDMA(u32 dma_no); // returns the previous selection
+void FS_InitFile(FSFile * p_file);
+BOOL FS_WaitAsync(FSFile * p_file);
+
+#endif //NITRO_FS_FILE_H_
diff --git a/arm9/lib/include/FS_overlay.h b/arm9/lib/include/FS_overlay.h
new file mode 100644
index 00000000..c2634509
--- /dev/null
+++ b/arm9/lib/include/FS_overlay.h
@@ -0,0 +1,41 @@
+#ifndef NITRO_FS_OVERLAY_H_
+#define NITRO_FS_OVERLAY_H_
+
+#include "nitro.h"
+#include "MI_exMemory.h"
+#include "FS_file.h"
+#include "CARD_rom.h"
+
+typedef u32 FSOverlayID;
+
+typedef void (*FSOverlayInitFunc) (void);
+
+typedef struct FSOverlayInfoHeader
+{
+    u32 id;
+    u8 *ram_address;
+    u32 ram_size;
+    u32 bss_size;
+    FSOverlayInitFunc *sinit_init;
+    FSOverlayInitFunc *sinit_init_end;
+    u32 file_id;
+    u32 compressed:24;
+    u32 flag:8;
+} FSOverlayInfoHeader;
+
+typedef struct FSOverlayInfo
+{
+    FSOverlayInfoHeader header;
+    MIProcessor target;
+    CARDRomRegion file_pos;
+} FSOverlayInfo;
+
+BOOL    FS_LoadOverlayInfo(FSOverlayInfo *p_ovi, MIProcessor target, FSOverlayID id);
+BOOL    FS_LoadOverlay(MIProcessor target, FSOverlayID id);
+BOOL    FS_UnloadOverlay(MIProcessor target, FSOverlayID id);
+BOOL    FS_LoadOverlayImage(FSOverlayInfo *p_ovi);
+void    FS_StartOverlay(FSOverlayInfo *p_ovi);
+BOOL    FS_LoadOverlayImageAsync(FSOverlayInfo *p_ovi, FSFile *p_file);
+void    FS_CloseFile(FSFile *p_file);
+
+#endif //NITRO_FS_OVERLAY_H_
diff --git a/arm9/lib/include/FS_rom.h b/arm9/lib/include/FS_rom.h
new file mode 100644
index 00000000..fc62b579
--- /dev/null
+++ b/arm9/lib/include/FS_rom.h
@@ -0,0 +1,6 @@
+#ifndef NITRO_FS_ROM_H_
+#define NITRO_FS_ROM_H_
+
+void FSi_InitRom(u32 default_dma_no);
+
+#endif //NITRO_FS_ROM_H_
diff --git a/arm9/lib/include/MI_byteAccess.h b/arm9/lib/include/MI_byteAccess.h
new file mode 100644
index 00000000..10dae4c9
--- /dev/null
+++ b/arm9/lib/include/MI_byteAccess.h
@@ -0,0 +1,9 @@
+#ifndef NITRO_MI_BYTEACCESS_H_
+#define NITRO_MI_BYTEACCESS_H_
+
+static inline u8 MI_ReadByte(const void *address)
+{
+    return *(u8 *)address;
+}
+
+#endif //NITRO_MI_BYTEACCESS_H_
diff --git a/arm9/lib/include/MI_exMemory.h b/arm9/lib/include/MI_exMemory.h
new file mode 100644
index 00000000..4a8a10a8
--- /dev/null
+++ b/arm9/lib/include/MI_exMemory.h
@@ -0,0 +1,9 @@
+#ifndef NITRO_MI_EXMEMORY_H_
+#define NITRO_MI_EXMEMORY_H_
+
+typedef enum {
+    MI_PROCESSOR_ARM9 = 0,
+    MI_PROCESSOR_ARM7 = 1
+} MIProcessor;
+
+#endif //NITRO_MI_EXMEMORY_H_
diff --git a/arm9/lib/include/OS_system.h b/arm9/lib/include/OS_system.h
index 9a79c0d1..65c58f57 100644
--- a/arm9/lib/include/OS_system.h
+++ b/arm9/lib/include/OS_system.h
@@ -5,6 +5,7 @@
 #ifndef POKEDIAMOND_OS_SYSTEM_H
 #define POKEDIAMOND_OS_SYSTEM_H
 
+#include "function_target.h"
 #include "consts.h"
 #include "function_target.h"
 
diff --git a/arm9/lib/include/OS_thread.h b/arm9/lib/include/OS_thread.h
index 4fb70bf7..8820a7a0 100644
--- a/arm9/lib/include/OS_thread.h
+++ b/arm9/lib/include/OS_thread.h
@@ -7,6 +7,14 @@
 
 typedef struct _OSThread OSThread;
 
+struct _OSThreadQueue
+{
+    OSThread *head;
+    OSThread *tail;
+};
+
+typedef struct _OSThreadQueue OSThreadQueue;
+
 typedef struct OSThreadInfo {
     u16 isNeedRescheduling;
     u16 irqDepth;
@@ -20,4 +28,10 @@ struct _OSThread
     u8 padding[0x80]; //todo: not the correct size but idfk
 };
 
+void OS_SleepThread(OSThreadQueue * queue);
+static inline void OS_InitThreadQueue(OSThreadQueue * queue)
+{
+    queue->head = queue->tail = NULL;
+}
+
 #endif //POKEDIAMOND_OS_THREAD_H
diff --git a/arm9/lib/include/mmap.h b/arm9/lib/include/mmap.h
index 1f8f37f9..27255115 100644
--- a/arm9/lib/include/mmap.h
+++ b/arm9/lib/include/mmap.h
@@ -12,8 +12,10 @@ extern u32 SDK_AUTOLOAD_DTCM_START[];
 #define HW_MAIN_MEM_SHARED_SIZE 0x00001000
 #define HW_MAIN_MEM_DEBUGGER_OFFSET     0x00700000
 
+#define HW_ITCM_IMAGE 0x01000000
 #define HW_ITCM                 0x01FF8000
 #define HW_ITCM_SIZE            0x00008000
+#define HW_ITCM_END (HW_ITCM + HW_ITCM_SIZE)
 
 #define HW_WRAM                 0x037F8000
 
diff --git a/arm9/lib/include/mmap_global.h b/arm9/lib/include/mmap_global.h
new file mode 100644
index 00000000..e657e46f
--- /dev/null
+++ b/arm9/lib/include/mmap_global.h
@@ -0,0 +1,4 @@
+#ifndef NITRO_MMAP_GLOBAL_H_
+#define NITRO_MMAP_GLOBAL_H_
+
+#endif //NITRO_MMAP_GLOBAL_H_
diff --git a/arm9/lib/src/FS_file.c b/arm9/lib/src/FS_file.c
new file mode 100644
index 00000000..8ca89af8
--- /dev/null
+++ b/arm9/lib/src/FS_file.c
@@ -0,0 +1,258 @@
+#include "nitro.h"
+#include "MI_byteAccess.h"
+#include "FS_rom.h"
+#include "FS_file.h"
+
+extern FSDirPos current_dir_pos;
+BOOL is_init = FALSE;
+
+static inline BOOL FSi_IsSlash(u32 c)
+{
+    return (c == '/') || (c == '\\');
+}
+
+static inline BOOL FS_IsBusy(volatile const FSFile * p_file)
+{
+    return p_file->stat & FS_FILE_STATUS_BUSY ? TRUE : FALSE;
+}
+
+static inline BOOL FS_IsSucceeded(volatile const FSFile * p_file)
+{
+    return p_file->error == FS_RESULT_SUCCESS ? TRUE : FALSE;
+}
+
+void FS_Init(u32 default_dma_no)
+{
+    if (!is_init)
+    {
+        is_init = TRUE;
+        FSi_InitRom(default_dma_no);
+    }
+}
+
+BOOL FS_IsAvailable(void)
+{
+    return is_init;
+}
+
+void FS_InitFile(FSFile * p_file)
+{
+    p_file->link.next = p_file->link.prev = NULL;
+    OS_InitThreadQueue(p_file->queue);
+    p_file->arc = NULL;
+    p_file->command = FS_COMMAND_INVALID;
+    p_file->stat = 0;
+}
+
+static BOOL FSi_FindPath(FSFile * p_dir, const char * path, FSFileID * p_file_id, FSDirPos * p_dir_pos)
+{
+    FSDirPos pos;
+    if (FSi_IsSlash(MI_ReadByte(path)))
+    {
+        pos.arc = current_dir_pos.arc;
+        pos.own_id = 0;
+        pos.pos = 0;
+        pos.index = 0;
+        path++;
+    }
+    else
+    {
+        int i;
+        pos = current_dir_pos;
+        for (i = 0; i <= FS_ARCHIVE_NAME_LEN_MAX; ++i)
+        {
+            u32 c = MI_ReadByte(path + i);
+            if (!c || FSi_IsSlash(c))
+                break;
+            else if (c == ':')
+            {
+                FSArchive * const p_arc = FS_FindArchive(path, i);
+                if (!p_arc)
+                {
+                    return FALSE;
+                }
+                else if (!FS_IsArchiveLoaded(p_arc))
+                {
+                    return FALSE;
+                }
+                pos.arc = p_arc;
+                pos.pos = 0;
+                pos.index = 0;
+                pos.own_id = 0;
+                path += i + 1;
+                if (FSi_IsSlash(MI_ReadByte(path)))
+                    ++path;
+                break;
+            }
+        }
+    }
+    p_dir->arc = pos.arc;
+    p_dir->arg.findpath.path = path;
+    p_dir->arg.findpath.pos = pos;
+    if (p_dir_pos)
+    {
+        p_dir->arg.findpath.find_directory = TRUE;
+        p_dir->arg.findpath.result.dir = p_dir_pos;
+    }
+    else
+    {
+        p_dir->arg.findpath.find_directory = FALSE;
+        p_dir->arg.findpath.result.file = p_file_id;
+    }
+    return FSi_SendCommand(p_dir, FS_COMMAND_FINDPATH);
+}
+
+int FSi_ReadFileCore(FSFile * p_file, void * dst, s32 len, BOOL async)
+{
+    {
+        const s32 pos = (s32)p_file->prop.file.pos;
+        const s32 rest = (s32)p_file->prop.file.bottom - pos;
+        const u32 org = (u32)len;
+        if (len > rest)
+            len = rest;
+        if (len < 0)
+            len = 0;
+        p_file->arg.readfile.dst = dst;
+        p_file->arg.readfile.len_org = org;
+        p_file->arg.readfile.len = (u32)(len);
+        if (!async)
+            p_file->stat |= FS_FILE_STATUS_SYNC;
+        (void)FSi_SendCommand(p_file, FS_COMMAND_READFILE);
+        if (!async)
+        {
+            if (FS_WaitAsync(p_file))
+                len = (s32)p_file->prop.file.pos - pos;
+            else
+                len = -1;
+        }
+    }
+    return len;
+}
+
+BOOL FS_ConvertPathToFileID(FSFileID * p_file_id, const char * path)
+{
+    FSFile dir;
+    FS_InitFile(&dir);
+    if (!FSi_FindPath(&dir, path, p_file_id, NULL))
+        return FALSE;
+    return TRUE;
+}
+
+BOOL FS_OpenFileDirect(FSFile * p_file, FSArchive * p_arc, u32 image_top, u32 image_bottom, u32 file_index)
+{
+    p_file->arc = p_arc;
+    p_file->arg.openfiledirect.index = file_index;
+    p_file->arg.openfiledirect.top = image_top;
+    p_file->arg.openfiledirect.bottom = image_bottom;
+    if (!FSi_SendCommand(p_file, FS_COMMAND_OPENFILEDIRECT))
+        return FALSE;
+    p_file->stat |= FS_FILE_STATUS_IS_FILE;
+    p_file->stat &= ~FS_FILE_STATUS_IS_DIR;
+    return TRUE;
+}
+
+BOOL FS_OpenFileFast(FSFile * p_file, FSFileID file_id)
+{
+    if (!file_id.arc)
+        return FALSE;
+    p_file->arc = file_id.arc;
+    p_file->arg.openfilefast.id = file_id;
+    if (!FSi_SendCommand(p_file, FS_COMMAND_OPENFILEFAST))
+        return FALSE;
+    p_file->stat |= FS_FILE_STATUS_IS_FILE;
+    p_file->stat &= ~FS_FILE_STATUS_IS_DIR;
+    return TRUE;
+}
+
+BOOL FS_OpenFile(FSFile * p_file, const char * path)
+{
+    FSFileID file_id;
+    return FS_ConvertPathToFileID(&file_id, path) && FS_OpenFileFast(p_file, file_id);
+}
+
+BOOL FS_CloseFile(FSFile * p_file)
+{
+    if (!FSi_SendCommand(p_file, FS_COMMAND_CLOSEFILE))
+        return FALSE;
+    p_file->arc = NULL;
+    p_file->command = FS_COMMAND_INVALID;
+    p_file->stat &= ~(FS_FILE_STATUS_IS_FILE | FS_FILE_STATUS_IS_DIR);
+    return TRUE;
+}
+
+BOOL FS_WaitAsync(FSFile * p_file)
+{
+    BOOL is_owner = FALSE;
+    OSIntrMode bak_par = OS_DisableInterrupts();
+    if (FS_IsBusy(p_file))
+    {
+        is_owner = !(p_file->stat & (FS_FILE_STATUS_SYNC | FS_FILE_STATUS_OPERATING));
+        if (is_owner)
+        {
+            p_file->stat |= FS_FILE_STATUS_SYNC;
+            do
+            {
+                OS_SleepThread(p_file->queue);
+            } while (!(p_file->stat & FS_FILE_STATUS_OPERATING));
+        }
+        else
+        {
+            do
+            {
+                OS_SleepThread(p_file->queue);
+            } while (FS_IsBusy(p_file));
+        }
+    }
+    (void)OS_RestoreInterrupts(bak_par);
+    if (is_owner)
+    {
+        return FSi_ExecuteSyncCommand(p_file);
+    }
+
+    return FS_IsSucceeded(p_file);
+}
+
+int FS_ReadFileAsync(FSFile * p_file, void * dst, s32 len)
+{
+    return FSi_ReadFileCore(p_file, dst, len, TRUE);
+}
+
+int FS_ReadFile(FSFile * p_file, void * dst, s32 len)
+{
+    return FSi_ReadFileCore(p_file, dst, len, FALSE);
+}
+
+BOOL FS_SeekFile(FSFile * p_file, int offset, FSSeekFileMode origin)
+{
+    switch (origin)
+    {
+    case FS_SEEK_SET:
+        offset += p_file->prop.file.top;
+        break;
+    case FS_SEEK_CUR:
+        offset += p_file->prop.file.pos;
+        break;
+    case FS_SEEK_END:
+        offset += p_file->prop.file.bottom;
+        break;
+    default:
+        return FALSE;
+    }
+    if (offset < (s32)p_file->prop.file.top)
+        offset = (s32)p_file->prop.file.top;
+    if (offset > (s32)p_file->prop.file.bottom)
+        offset = (s32)p_file->prop.file.bottom;
+    p_file->prop.file.pos = offset;
+    return TRUE;
+}
+
+BOOL FS_ChangeDir(const char * path)
+{
+    FSDirPos pos;
+    FSFile dir;
+    FS_InitFile(&dir);
+    if (!FSi_FindPath(&dir, path, NULL, &pos))
+        return FALSE;
+    current_dir_pos = pos;
+    return TRUE;
+}
diff --git a/arm9/src/poke_overlay.c b/arm9/src/poke_overlay.c
new file mode 100644
index 00000000..9a81ea83
--- /dev/null
+++ b/arm9/src/poke_overlay.c
@@ -0,0 +1,234 @@
+#include "global.h"
+#include "nitro.h"
+#include "FS_file.h"
+#include "FS_overlay.h"
+
+#define OVERLAY_LOAD_WRAM 0
+#define OVERLAY_LOAD_ITCM 1
+#define OVERLAY_LOAD_DTCM 2
+
+extern void ErrorHandling(void);
+
+struct LoadedOverlay {
+    FSOverlayID id;
+    BOOL active;
+};
+
+extern struct LoadedOverlay gLoadedOverlays[3][8];
+
+struct LoadedOverlay* GetLoadedOverlaysInRegion(int);
+BOOL GetOverlayRamBounds(FSOverlayID, void**, void**);
+BOOL CanOverlayBeLoaded(FSOverlayID);
+int GetOverlayLoadDestination(FSOverlayID);
+BOOL LoadOverlayNormal(MIProcessor, FSOverlayID);
+BOOL LoadOverlayNoInit(MIProcessor, FSOverlayID);
+BOOL LoadOverlayNoInitAsync(MIProcessor, FSOverlayID);
+
+THUMB_FUNC void FreeOverlayAllocation(struct LoadedOverlay * loaded)
+{
+    if (loaded->active != TRUE)
+        ErrorHandling();
+    if (FS_UnloadOverlay(MI_PROCESSOR_ARM9, loaded->id) != TRUE)
+        ErrorHandling();
+    loaded->active = FALSE;
+}
+
+THUMB_FUNC void UnloadOverlayByID(FSOverlayID id)
+{
+    struct LoadedOverlay * loaded = GetLoadedOverlaysInRegion(GetOverlayLoadDestination(id));
+    int i;
+    for (i = 0; i < 8; i++)
+    {
+        if (loaded[i].active == TRUE && loaded[i].id == id)
+        {
+            FreeOverlayAllocation(&loaded[i]);
+            break;
+        }
+    }
+}
+
+THUMB_FUNC int GetOverlayLoadDestination(FSOverlayID id)
+{
+    FSOverlayInfo info;
+    u8 *end;
+    u8 *start;
+    if (FS_LoadOverlayInfo(&info, MI_PROCESSOR_ARM9, id) != TRUE)
+        ErrorHandling();
+    start = (u8 *)HW_ITCM_IMAGE;
+    end = (u8 *)HW_ITCM_END;
+    if (info.header.ram_address <= end && info.header.ram_address >= start)
+        return OVERLAY_LOAD_ITCM;
+    start = (u8 *)SDK_AUTOLOAD_DTCM_START;
+    end = start + HW_DTCM_SIZE;
+    if (info.header.ram_address <= end && info.header.ram_address >= start)
+        return OVERLAY_LOAD_DTCM;
+    return OVERLAY_LOAD_WRAM;
+}
+
+THUMB_FUNC BOOL HandleLoadOverlay(FSOverlayID id, int a1)
+{
+    u32 sp0 = FS_DMA_NOT_USE;
+    struct LoadedOverlay *r3;
+    int r7;
+    int r6;
+    BOOL result;
+
+    if (!CanOverlayBeLoaded(id))
+        return FALSE;
+    r7 = GetOverlayLoadDestination(id);
+    r3 = GetLoadedOverlaysInRegion(r7);
+    for (r6 = 0; r6 < 8; r6++)
+    {
+        if (!r3[r6].active)
+        {
+            struct LoadedOverlay * ovly;
+            ovly = &r3[r6];
+            ovly->active = TRUE;
+            ovly->id = id;
+            break;
+        }
+    }
+    if (r6 >= 8)
+    {
+        ErrorHandling();
+        return FALSE;
+    }
+    if (r7 == OVERLAY_LOAD_ITCM || r7 == OVERLAY_LOAD_DTCM)
+    {
+        sp0 = FS_SetDefaultDMA(FS_DMA_NOT_USE);
+    }
+    switch (a1)
+    {
+    case 0:
+        result = LoadOverlayNormal(MI_PROCESSOR_ARM9, id);
+        break;
+    case 1:
+        result = LoadOverlayNoInit(MI_PROCESSOR_ARM9, id);
+        break;
+    case 2:
+        result = LoadOverlayNoInitAsync(MI_PROCESSOR_ARM9, id);
+        break;
+    default:
+        ErrorHandling();
+        return FALSE;
+    }
+    if (r7 == OVERLAY_LOAD_ITCM || r7 == OVERLAY_LOAD_DTCM)
+    {
+        FS_SetDefaultDMA(sp0);
+    }
+    if (result == 0)
+    {
+        ErrorHandling();
+        return FALSE;
+    }
+    return TRUE;
+}
+
+THUMB_FUNC BOOL CanOverlayBeLoaded(FSOverlayID id)
+{
+    void *start, *end, *start2, *end2;
+    struct LoadedOverlay *r5;
+    int i;
+    if (!GetOverlayRamBounds(id, &start, &end))
+        return FALSE;
+    r5 = GetLoadedOverlaysInRegion(GetOverlayLoadDestination(id));
+    for (i = 0; i < 8; i++)
+    {
+        if (r5[i].active == TRUE && GetOverlayRamBounds(r5[i].id, &start2, &end2) == TRUE)
+        {
+            if ((start >= start2 && start < end2) || (end > start2 && end <= end2) || (start <= start2 && end >= end2))
+            {
+                ErrorHandling();
+                return FALSE;
+            }
+        }
+    }
+    return TRUE;
+}
+
+THUMB_FUNC struct LoadedOverlay* GetLoadedOverlaysInRegion(int a0)
+{
+    switch (a0)
+    {
+    case OVERLAY_LOAD_WRAM:
+    default:
+        return gLoadedOverlays[0];
+    case OVERLAY_LOAD_ITCM:
+        return gLoadedOverlays[1];
+    case OVERLAY_LOAD_DTCM:
+        return gLoadedOverlays[2];
+    }
+}
+
+THUMB_FUNC BOOL GetOverlayRamBounds(FSOverlayID id, void ** start, void ** end)
+{
+    FSOverlayInfo info;
+    if (!FS_LoadOverlayInfo(&info, MI_PROCESSOR_ARM9, id)) {
+        ErrorHandling();
+        return FALSE;
+    }
+    *start = (void *)info.header.ram_address;
+    *end = (char *)*start + (info.header.ram_size + info.header.bss_size);
+    return TRUE;
+}
+
+THUMB_FUNC BOOL LoadOverlayNormal(MIProcessor target, FSOverlayID id)
+{
+    return FS_LoadOverlay(target, id);
+}
+
+THUMB_FUNC BOOL LoadOverlayNoInit(MIProcessor target, FSOverlayID id)
+{
+    FSOverlayInfo info;
+    if (!FS_LoadOverlayInfo(&info, target, id))
+        return FALSE;
+    if (!FS_LoadOverlayImage(&info))
+        return FALSE;
+    FS_StartOverlay(&info);
+    return TRUE;
+}
+
+//THUMB_FUNC BOOL LoadOverlayNoInitAsync(MIProcessor target, FSOverlayID id)
+//{
+//    FSOverlayInfo info;
+//    FSFile file;
+//    if (!FS_LoadOverlayInfo(&info, target, id))
+//        return FALSE;
+//    FS_InitFile(&file);
+//    FS_LoadOverlayImageAsync(&info, &file);
+//    FS_WaitAsync(&file);
+//    FS_CloseFile(&file);
+//    FS_StartOverlay(&info);
+//    return TRUE;
+//}
+
+THUMB_FUNC asm BOOL LoadOverlayNoInitAsync(MIProcessor target, FSOverlayID id)
+{
+    push {lr}
+    sub sp, #0x74
+    add r3, r0, #0x0
+    add r2, r1, #0x0
+    add r0, sp, #0x0
+    add r1, r3, #0x0
+    bl FS_LoadOverlayInfo
+    cmp r0, #0x0
+    bne _020061C2
+    add sp, #0x74
+    mov r0, #0x0
+    pop {pc}
+_020061C2:
+    add r0, sp, #0x2c
+    bl FS_InitFile
+    add r0, sp, #0x0
+    add r1, sp, #0x2c
+    bl FS_LoadOverlayImageAsync
+    add r0, sp, #0x2c
+    bl FS_WaitAsync
+    add r0, sp, #0x2c
+    bl FS_CloseFile
+    add r0, sp, #0x0
+    bl FS_StartOverlay
+    mov r0, #0x1
+    add sp, #0x74
+    pop {pc}
+}
diff --git a/arm9/undefined_syms.txt b/arm9/undefined_syms.txt
index a76e7783..0b159a51 100644
--- a/arm9/undefined_syms.txt
+++ b/arm9/undefined_syms.txt
@@ -22,8 +22,11 @@ gBacklightTop_2 = 0x02106FA0;
 gUnknown21C48B8 = 0x021C48B8;
 gUnk021C4918 = 0x021C4918;
 gUnk021C8C70 = 0x021C8C70;
+gLoadedOverlays = 0x021C45B0;
 OSi_IrqCallbackInfo = 0x021D341C;
 isInitialized = 0x021D347C;
+current_dir_pos = 0x021D53EC;
+is_init = 0x021D53F8;
 OSi_StackForDestructor = 0x021D3480;
 OSi_RescheduleCount = 0x021D3484;
 OSi_ThreadIdCount = 0x021D3488;