Robert Allan JamesandClaude Sonnet 5
72487e7fff
Punch list §25 item 3.6 complete. Phase 3 (§25.4) core is now done: items 3.1-3.6 all closed. stadium_evict() now panics via sk_hal_panic() if a resident cell 0 (Hera, patron zero by construction of §6's boot order) is ever selected for eviction. Placement is deliberate: the check runs before the pin/contains refusal checks, not after -- if it ran after, a wrongly-cleared pin would let the ordinary refusal path quietly return -1 instead of ever reaching the panic, defeating the point of a check that's supposed to be independent of pin holding. Per §20.5 #3's explicit wording, not implemented as a filter: stadium_admit()'s least-dense search is unchanged, still relying on the general pin skip from item 3.5. Adding a second filter there would have done exactly what that section warns against ("filtering hides the bug, asserting reports it"). The panic path is, and will remain, unexercised by the acceptance mechanism: sk_hal_panic() halts the machine, and triggering it deliberately is incompatible with the three-arch boot being this project's sole acceptance test. Correctness rests on the placement argument, not a test -- same honesty precedent as items 3.4 and 3.5's other unexercised paths. Verified: three-architecture boot (amd64, aarch64, riscv64), all reaching ok> with identical dict_hash=0x3d4e1daf289da94f matching the item-3.5 baseline. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
capsules/
FORTH personality files loaded by the VM at boot. A capsule is an immutable, content-addressed payload; its XXHash64 hash is its identity. Any mutation changes the hash and the birth protocol rejects the image.
Key files
| File | Type | Purpose |
|---|---|---|
init.4th |
(m) MAMA_INIT |
Default Mama VM personality — loaded at LBN 2048 |
ACL.4th |
user | Word-level ACL system; self-activating at boot |
zuse.4th |
user | Bootstrap superuser; loaded by ACL.4th |
doe.4th |
user | DoE workload words (EXEC-DOE) — opt-in |
init-0.4th … init-9.4th |
(p) |
Numbered personality variants |
init-l8-*.4th |
(p) |
L8 Jacquard mode variants (stable/volatile/diverse/temporal/transition/omni) |
hermes/init.4th |
(p) |
Hermes baby VM personality |
artemis/init.4th |
(p) |
Artemis baby VM personality |
Block namespace
Block ranges are shared across all loaded capsules — collisions cause silent word-definition overwrites.
| Range | Owner |
|---|---|
| 2048–2099 | init.4th |
| 2100–2199 | doe.4th |
| 3000–3999 | workload capsules |
| 4000+ | user-defined (ACL.4th, zuse.4th, …) |
Each block is limited to 1024 bytes. Verify with wc -c before committing.
See also
experiments/bare_metal/README.md— DoE protocols and block namespace rulesdocs/03-architecture/word-acl/DESIGN.md— ACL system designtools/mkcapsule.c— assembles capsules intocapsule_generated.c- Project root