3do-adndslayer-doc

Advanced Dungeons & Dragons — Slayer, 3DO Interactive Multiplayer, USA. One pressed CD-ROM, documented from a CHD without running or emulating anything on it.

A dungeon crawler that spends two thirds of its disc on a soundtrack it did not compress, whose operating system is byte-identical with the disc next door on 115 files of 116, and which names nobody in any string — but says who made it, four times, in pixels.

container	one CHD v5, 200,769,302 B, SHA-1 126b1dcc03007b1482cd9583edb2c2754cb5effa
pressing	one MODE1_RAW track, 151,340 sectors, 45.4474 % of a 74-minute CD
audio tracks	zero — the first of four 3DO discs here with none
pressed	1994-08-16 09:29:56, from the disc's own /rom_tags
file system	Opera, not ISO 9660. 582 files, 24 directories, 272,214,595 B
hashes	573 distinct of 582, seven duplicate groups
mastering fill	iamaduck, 17,729 sectors = 11.7147 %, in two regions
unowned sectors	0; double-claimed 0; 300 zero sectors past the declared volume
the thesis	67.4093 % of the user area is recorded sound — 81 AIFF files, codec NONE on 81 of 81, 22:30.04
identified	87.6184 % of the user area, the highest in the collection — and the least impressive, because the object did the work
the game itself	one 299 KB ARM binary, 370 cel containers, 2,516 frames, a font: under 4 %

Five things this disc turned out to be

1. It has a twin, and the twin is 68 bytes away. Its /System and Super Street Fighter II Turbo's are 115 identical files of 116. The one difference is a serial-port driver, and the difference is a kprintf call and its format string — five ARM instructions and 44 bytes of "Stamped event pod %d position %d generic %d". 08

2. The container nobody had walked, walks. ANIM / CCB : 370 files closing at residue zero, 370 of 370, 3,782 chunks, one PDAT per frame and 2,516 of 2,516 frames rendered. The reader for the chunk rule had existed for two discs and had never been aimed here. 06

3. The disc carries its own pressing date, in a 32-bit field of /rom_tags, and it reorders the collection: Slayer was pressed 147 days before the disc it shares an SDK build with. The platform notes had already found this and asked a fourth disc for exactly this point — which this session did not read until after it had re-derived it. 11

4. Two hundred and nine megabytes of uncompressed music, when the platform's own 2:1 codec was on the same disc and the twin used it. SDX2 would have freed 102,379,300 bytes. The disc was 45 % full, so it cost nothing — and the object still supplies evidence about why. 09

5. The credit roll is 17 still screens, 20 people, and this repository publishes none of their names — because the owner of the disc was asked and chose that for this object, not because anything forbids it. The standing line is that what is on the disc is published and only reach is withheld; the clause permits the names and so does the house rule. 10

The chapters

00	predictions, written before anything was opened — 36 clauses, two columns
01	what it is, on which denominator, and what it keeps and throws away
02	the sheet: every figure with the command that remakes it
03	Opera a fourth time, and a label with two lengths that are both right
04	all 151,340 sectors, and 2,928 zero sectors of which only 300 are empty
05	the console does not read the filename, and that is why nobody noticed it was wrong
06	the ANIM container: 370 files close, 2,516 frames render
07	41 ARM images, and the two that break the rule are the game's
08	the smallest useful diff this collection has: one debug print
09	the thesis, the SDX2 arithmetic, and 43 creatures with 36 voices
10	three films, a credit roll counted not transcribed, and the decision
11	a pressing date in 32 bits, and a question the third disc left open
12	114 crossings of 573, all of them 3DO, and the twin
13	what was written into the platform checklist, and what it already knew
14	the refusals, the negative controls, and two tools that cannot say no
15	every wrong figure, left visible: the brief's, the pre-briefing's, this session's
16	18.45 of 30 open against 19.50 predicted

notes/

The measured listings, so every table above can be checked without the disc: listing.txt (582 entries), sha1-all.txt (582 records), sectors.txt, chd.txt, label.txt, containers.txt, frames.txt, romtags.txt, aif.txt, reuse.txt, account.txt, crossall.txt, sdkdiff-ssf2t.txt, and owner-observations.txt — what the person who owns the disc reported, attributed, including the one check that ran from bytes to a person and back.

tools/

446 Python files. Three were written here and one was rewritten:

• animwalk.py — walks the ANIM / CCB container, censuses its chunks, and renders every PDAT as a frame. Seven negative controls, one positive;
• romtags.py — reads /rom_tags, checks the 0x02 record against a directory listing, and argues the epoch with a table instead of a claim;
• aiffreuse.py — finds re-used sound that a hash census cannot see: exact payloads, contained payloads, and same-length correlations, with an envelope ranking that is explicitly not a test;
• account3do.py — rewritten for this disc, third session running, and the two changes are named in its docstring: the AIFF bucket is labelled with the codec the container declares rather than with a neighbour's, and the cel container is walked rather than signature-scanned.

Nothing else was modified. Twelve inherited tool defects are reported in 15 and none is fixed, because fixing an inherited tool silently is worse than reporting it.

What is not in this repository

No byte of the product, in any form it takes: no audio, no cel, no film, no frame decoded into another format, and no name from the credit roll. The .chd, _work/ and prompt.txt are in .gitignore, verified in both directions with git add -An and git ls-files.