ov032 — overlay detail · Tongari Boushi Archive

ov032 general_2d_ui

containers: 2d/makechime.lzs, makechime

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 32

File ID 32

RAM load address 0x02155a00

RAM size 10,240 bytes (0x2800)

BSS size 0 bytes

On-disk compressed size 8,220 bytes

Compression flag 0x1 (BLZ-compressed)

Functions 65

External calls 50

Jump tables 4

Data items 227

Code coverage 80% (8,218 of 10,240 bytes)

Reading the binary

The overlay ships on the cart at file ID 32 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 + 32 * 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_032.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/ov032.json; the per-overlay descriptive markdown is at notes/overlay_knowledgebase/ov032.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.

0x021567e0 `偪姩ぢ倩定`

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.

makechime → data/2d/makechime.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/makechime.lzs — 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 65 functions

#	Address	Size	Calls	Strings	Role hint
1	0x02155a00	136	1	0	code
2	0x02155a90	48	5	0	code
3	0x02155c34	16	0	0	trampoline / small helper
4	0x02155c44	614	42	0	high-fan-out (likely dispatcher / setup)
5	0x02155edc	310	19	3	refs: makechime.lzs \\| makechime.lzs \\| makechime.lzs
6	0x02156030	64	5	0	code
7	0x02156074	76	9	0	code
8	0x021560c4	182	15	7	refs: makechime.lzs \\| makechime.lzs \\| makechime.lzs \\| makechime.lzs \\| makechime.lzs \\| makechime.lzs
9	0x0215619c	122	2	0	code
10	0x02156224	16	0	0	trampoline / small helper
11	0x02156238	12	0	0	trampoline / small helper
12	0x02156248	190	10	0	code
13	0x02156318	346	24	0	high-fan-out (likely dispatcher / setup)
14	0x021564a0	140	11	0	code
15	0x02156534	118	6	0	code
16	0x021565b8	126	11	0	code
17	0x02156648	78	1	0	code
18	0x021566a8	42	0	0	code
19	0x021566d8	36	0	0	trampoline / small helper
20	0x02156700	28	0	0	trampoline / small helper
21	0x02156720	62	4	0	code
22	0x02156768	198	6	0	code
23	0x02156854	96	3	0	code
24	0x021568b8	36	3	0	trampoline / small helper
25	0x021568dc	92	3	0	code
26	0x0215693c	270	22	0	high-fan-out (likely dispatcher / setup)
27	0x02156a74	70	6	0	code
28	0x02156ac0	68	6	0	code
29	0x02156b08	88	0	0	code
30	0x02156b6c	32	0	0	trampoline / small helper
31	0x02156b90	50	1	0	code
32	0x02156bc8	38	0	0	trampoline / small helper
33	0x02156bf4	34	0	0	trampoline / small helper
34	0x02156c1c	96	2	0	code
35	0x02156c80	6	0	0	trampoline / small helper
36	0x02156c88	40	5	0	code
37	0x02156cb0	36	1	0	trampoline / small helper
38	0x02156cdc	382	6	0	code
39	0x02156e64	52	5	0	code
40	0x02156e9c	154	6	0	code
41	0x02156f38	54	4	0	code
42	0x02156f80	114	5	0	code
43	0x02157008	196	6	0	code
44	0x021570d4	260	5	0	code
45	0x021571e8	280	6	0	code
46	0x02157314	210	11	0	code
47	0x021573fc	120	3	0	code
48	0x0215747c	366	18	0	code
49	0x02157604	184	1	0	code
50	0x021576c4	480	22	0	high-fan-out (likely dispatcher / setup)
51	0x021578d0	140	9	0	code
52	0x02157980	58	4	0	code
53	0x021579c8	58	4	0	code
54	0x02157a0c	22	1	0	trampoline / small helper
55	0x02157a28	212	13	0	code
56	0x02157b0c	60	0	0	code
57	0x02157b48	60	0	0	code
58	0x02157b84	116	3	0	code
59	0x02157bf8	96	1	0	code
60	0x02157c5c	106	1	0	code
61	0x02157cd0	114	5	0	code
62	0x02157d4c	244	8	1	refs: makechime.lzs
63	0x02157e58	12	0	0	trampoline / small helper
64	0x02157e68	44	0	0	code
65	0x02157e9c	12	1	0	trampoline / small helper

Open questions & conflicts

Open questions / unknowns

Auto-analysis identified 65 functions covering 8218 of 10240 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

Partial overlap: prior-pass had `['makechime']`; Ghidra adds `['2d/makechime.lzs']`.

Source

Per-overlay markdown: notes/overlay_knowledgebase/ov032.md
Raw Ghidra dump: notes/overlay_knowledgebase/raw/ov032.json
Overlay-system explainer: overlays system
Plain-English overlay primer: overlay knowledgebase

‹ ov031 All overlays ov033 ›