Robert Allan JamesandClaude Sonnet 5
2da746c01c
FABRIC-3.md §XXXV.3/.4 designed this and it was never built -- two live campaigns got launched relying entirely on a live serial-log tail before this was caught. doe_region.c/.h mirrors log_region.c's own growable-ring pattern (own devblock_from_top fence at 98, past log_region's ceiling at 97) to persist one trial-summary record per completed trial straight to disk/artemis.img, surviving past QEMU exit with no host required. Verified end to end: booted amd64, called DOE-PERSIST-TRIAL at the console, clean BYE, then read the raw disk bytes back with QEMU fully dead -- confirmed the exact values passed in. Wired into both multiuser-doe.4th and per-isa-doe.4th's trial markers. Clean build, zero new warnings, all 3 ISAs; mkcapsule --lint passes both edited capsules. FABRIC-3.md §XXXV.10 documents the fix and the root-cause correction: two campaigns were launched on an unbuilt persistence design before this was caught and fixed. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01BWpNjdwPtFLuVLaAq44L9K
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 |
workload-0.4th … workload-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