- Engine: a wire keeps whether the message at its mark is the one last looked at; a node's take, move and drop of any other answer 3 and write nothing (MESH.md 7d.3). A wire cut and made again between a look and a take no longer has a NACK done as text, or 256 cells written where one was looked for. - Engine: v4_fabric_wire_kernel wires a kernel to a port with no queues; a message for it is refused at once, error 18, on a mesh as on the products. - The result of a drop is looked at; a take that does not take has the message dropped, or gone past: nothing goes round. - An answer nobody waits for is let go uncounted; (LOST) counts what should have been delivered or acted on and was not. The flood's account is exact. - Error 18 from under a word that was printing empties the data stack, as a fault does: that word's own values are not left there. - Tests: the take and drop windows cut at every step, with and without another message put; a refusal owed to a stuck node whose wire is full. Co-Authored-By: Claude Opus 5.5 <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 |
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