DS game only 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.
Reading the binary
The overlay ships on the cart at file ID 56 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 + 56 * 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_056.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/ov056.json;
the per-overlay descriptive markdown is at
notes/overlay_knowledgebase/ov056.md.
Embedded strings
No UTF-16 LE strings are embedded directly in this overlay's binary. Any text it displays at runtime comes from a container file loaded via the content cache.
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.
-
commonβdata/2d/status/common.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/status/common.lzsβ 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 47 functions
| # | Address | Size | Calls | Strings | Role hint |
|---|---|---|---|---|---|
| 1 | 0x0215642e | 32 | 3 | 0 | trampoline / small helper |
| 2 | 0x02156458 | 8 | 0 | 0 | trampoline / small helper |
| 3 | 0x02156460 | 58 | 6 | 0 | code |
| 4 | 0x0215649c | 852 | 22 | 0 | high-fan-out (likely dispatcher / setup) |
| 5 | 0x02156800 | 754 | 27 | 0 | high-fan-out (likely dispatcher / setup) |
| 6 | 0x02156b00 | 98 | 6 | 0 | code |
| 7 | 0x02156b68 | 132 | 4 | 0 | code |
| 8 | 0x02156de8 | 24 | 1 | 0 | trampoline / small helper |
| 9 | 0x02156e04 | 16 | 1 | 0 | trampoline / small helper |
| 10 | 0x02156e18 | 150 | 4 | 0 | code |
| 11 | 0x02156eb4 | 18 | 1 | 0 | trampoline / small helper |
| 12 | 0x02156f00 | 62 | 5 | 0 | code |
| 13 | 0x02156f40 | 130 | 9 | 0 | code |
| 14 | 0x02156fd4 | 150 | 11 | 0 | code |
| 15 | 0x0215711c | 22 | 0 | 0 | trampoline / small helper |
| 16 | 0x02157134 | 114 | 6 | 0 | code |
| 17 | 0x021571b4 | 32 | 0 | 0 | trampoline / small helper |
| 18 | 0x021571d4 | 62 | 3 | 0 | code |
| 19 | 0x02157214 | 56 | 1 | 0 | code |
| 20 | 0x02157250 | 26 | 2 | 0 | trampoline / small helper |
| 21 | 0x02157298 | 22 | 1 | 0 | trampoline / small helper |
| 22 | 0x021572fc | 30 | 2 | 0 | trampoline / small helper |
| 23 | 0x0215731c | 60 | 3 | 1 | refs: common |
| 24 | 0x0215735c | 24 | 2 | 0 | trampoline / small helper |
| 25 | 0x02157374 | 36 | 2 | 1 | refs: common |
| 26 | 0x0215739c | 8 | 0 | 0 | trampoline / small helper |
| 27 | 0x021573f4 | 10 | 0 | 0 | trampoline / small helper |
| 28 | 0x02157404 | 10 | 0 | 0 | trampoline / small helper |
| 29 | 0x02157414 | 30 | 3 | 0 | trampoline / small helper |
| 30 | 0x02157434 | 88 | 3 | 1 | refs: common |
| 31 | 0x02157494 | 10 | 0 | 0 | trampoline / small helper |
| 32 | 0x021574a4 | 20 | 2 | 0 | trampoline / small helper |
| 33 | 0x021574b8 | 30 | 3 | 0 | trampoline / small helper |
| 34 | 0x021574d8 | 264 | 12 | 3 | refs: common \| common \| common |
| 35 | 0x021575f0 | 50 | 3 | 0 | code |
| 36 | 0x02157624 | 58 | 3 | 0 | code |
| 37 | 0x02157660 | 106 | 9 | 0 | code |
| 38 | 0x021576d0 | 154 | 3 | 0 | code |
| 39 | 0x02157770 | 56 | 1 | 0 | code |
| 40 | 0x021577a8 | 18 | 0 | 0 | trampoline / small helper |
| 41 | 0x021577c0 | 36 | 0 | 0 | trampoline / small helper |
| 42 | 0x02157968 | 40 | 2 | 0 | code |
| 43 | 0x02157990 | 78 | 3 | 1 | refs: common |
| 44 | 0x02157a1c | 30 | 1 | 0 | trampoline / small helper |
| 45 | 0x02157a3c | 26 | 2 | 0 | trampoline / small helper |
| 46 | 0x02157a58 | 32 | 3 | 0 | trampoline / small helper |
| 47 | 0x02157a7c | 12 | 1 | 0 | trampoline / small helper |
Open questions & conflicts
Open questions / unknowns
- Auto-analysis identified 47 functions covering 4134 of 8608 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
- **Mismatch:** prior-pass `controls_containers` = `['status']`; Ghidra-extracted containers = `['2d/status/common.lzs', 'common']`. Ghidra wins.
Source
- Per-overlay markdown:
notes/overlay_knowledgebase/ov056.md - Raw Ghidra dump:
notes/overlay_knowledgebase/raw/ov056.json - Overlay-system explainer: overlays system
- Plain-English overlay primer: overlay knowledgebase