ov011 — overlay detail · Tongari Boushi Archive

ov011 general_2d_ui

containers: 2d/signboard.lzs, designpalset, mydesign/designpalset.ofs (+1 more)

Header

Numeric metadata for this overlay as read from the overlay table at ROM offset 0x8DE00 (per-entry stride 32 bytes). Function counts, data-item counts, and the call-graph fan-out are from a Ghidra 11.3.1 headless auto-analysis pass.

Overlay ID 11

File ID 11

RAM load address 0x02155a00

RAM size 13,440 bytes (0x3480)

BSS size 0 bytes

On-disk compressed size 11,144 bytes

Compression flag 0x1 (BLZ-compressed)

Functions 62

External calls 75

Jump tables 6

Data items 282

Code coverage 74% (9,914 of 13,440 bytes)

Reading the binary

The overlay ships on the cart at file ID 11 under the BLZ code-LZ compression wrapper (the same backward-LZ scheme Nintendo uses for executable ARM9 code). At load time the engine reads the overlay table entry at ROM offset 0x8DE00 + 11 * 0x20, allocates the destination RAM region at 0x02155a00, decompresses the body in-place (if compressed), and resolves any external relocations.

To inspect this overlay outside the running game, decompress overlay/overlay_011.bin with ndspy.codeCompression.decompress() (Python ndspy library) and load the resulting plaintext into Ghidra or IDA at base address 0x02155a00. The raw Ghidra auto-analysis dump used to populate this page lives at notes/overlay_knowledgebase/raw/ov011.json; the per-overlay descriptive markdown is at notes/overlay_knowledgebase/ov011.md.

Embedded strings

1 UTF-16 LE string live inside this overlay's compiled binary. These addresses are absolute (inside the overlay's RAM image after load). The text is stored as little-endian UTF-16 code units, NUL-terminated.

0x02156aaa `む码頀咁`

Container references

Distinct container basenames referenced by this overlay. Each is loaded via the content cache by passing the basename string to a lookup that resolves it to a file ID in the ROM's FAT. The path column shows the file's location in the clean extract, where resolved.

designpalset → data/mydesign/designpalset.ofs
signboard → data/2d/signboard.lzs

Unresolved

These container basenames appeared in the overlay's string table but no file of that name was found in the clean extract. Most are false-positive ASCII matches (function names, register maps, fragments of other strings); a few may be containers that the overlay names but never actually opens. Listed for completeness.

2d/signboard.lzs — no matching container found in clean extract
mydesign/designpalset.ofs — no matching container found in clean extract

Function list

Functions Ghidra auto-identified inside this overlay's RAM range. Names prefixed FUN_ are auto-generated from the function's entry address; size is in bytes; the "calls" column counts both intra-overlay branches and external ARM9 call targets. The "strings" column counts how many UTF-16 LE strings each function references.

Show all 62 functions

#	Address	Size	Calls	Strings	Role hint
1	0x02155f4c	16	0	0	trampoline / small helper
2	0x02155f5c	928	50	0	high-fan-out (likely dispatcher / setup)
3	0x02156340	16	0	0	trampoline / small helper
4	0x02156354	12	0	0	trampoline / small helper
5	0x02156364	12	1	0	trampoline / small helper
6	0x02156374	160	11	2	refs: signboard.lzs \\| signboard.lzs
7	0x02156420	62	7	0	code
8	0x02156464	366	18	3	refs: signboard.lzs \\| signboard.lzs \\| signboard.lzs
9	0x021565f0	98	9	0	code
10	0x0215665c	170	5	4	refs: signboard.lzs \\| signboard.lzs \\| signboard.lzs \\| signboard.lzs
11	0x02156724	164	3	0	code
12	0x021567d8	198	4	0	code
13	0x021568b0	104	6	0	code
14	0x02156920	232	5	0	code
15	0x02156a10	36	3	0	trampoline / small helper
16	0x02156a3c	128	1	0	code
17	0x02156ac0	58	2	0	code
18	0x02156afc	136	1	0	code
19	0x02156b88	128	4	0	code
20	0x02156c14	22	0	0	trampoline / small helper
21	0x02156c2c	138	4	0	code
22	0x02156cc8	44	1	0	code
23	0x02156cf8	62	0	0	code
24	0x02156d48	130	5	2	refs: designpalset.ofs \\| signboard.lzs
25	0x02156ddc	62	3	0	code
26	0x02156e24	276	11	2	refs: designpalset.ofs \\| signboard.lzs
27	0x02156f50	68	3	0	code
28	0x02156fa4	144	9	0	code
29	0x0215703c	62	5	0	code
30	0x02157080	222	16	0	code
31	0x0215717c	236	9	3	refs: signboard.lzs \\| designpalset.ofs \\| signboard.lzs
32	0x02157284	104	9	0	code
33	0x02157300	46	1	0	code
34	0x02157334	1,344	58	0	high-fan-out (likely dispatcher / setup)
35	0x021578a0	610	34	0	high-fan-out (likely dispatcher / setup)
36	0x02157b14	88	0	0	code
37	0x02157b74	360	20	0	code
38	0x02157d18	258	17	0	code
39	0x02157e24	76	3	0	code
40	0x02157e74	60	3	0	code
41	0x02157eb0	68	3	0	code
42	0x02157ef8	28	1	0	trampoline / small helper
43	0x02157f14	86	1	0	code
44	0x02157f84	54	4	0	code
45	0x02157fc0	360	15	0	code
46	0x02158148	36	2	0	trampoline / small helper
47	0x02158174	8	0	0	trampoline / small helper
48	0x0215817c	102	8	0	code
49	0x021581f0	108	6	0	code
50	0x02158264	146	8	0	code
51	0x02158314	84	0	0	code
52	0x0215836c	86	0	0	code
53	0x021583c4	74	0	0	code
54	0x02158410	168	4	0	code
55	0x021584c0	170	2	0	code
56	0x02158570	102	4	0	code
57	0x021585d8	130	4	0	code
58	0x0215865c	76	2	0	code
59	0x021586a8	194	2	0	code
60	0x02158774	210	3	0	code
61	0x02158848	176	2	0	code
62	0x02158900	12	1	0	trampoline / small helper

Open questions & conflicts

Open questions / unknowns

Auto-analysis identified 62 functions covering 9914 of 13440 overlay bytes.
Function names are auto-generated `FUN_<addr>`. Manual renaming based on call-graph + string-ref analysis is a follow-up.
BSS size is 0 bytes; Ghidra-imported overlay does not include BSS so any references into the BSS range appear as unresolved.

Conflicts with the prior shallow pass

No major conflicts detected with prior-pass `overlay_role_final.json` record.

Source

Per-overlay markdown: notes/overlay_knowledgebase/ov011.md
Raw Ghidra dump: notes/overlay_knowledgebase/raw/ov011.json
Overlay-system explainer: overlays system
Plain-English overlay primer: overlay knowledgebase

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