Robert Allan James
fa300ef4c6
Adds VERT/EDGE/CUBE to capsules/fabric.4th (blocks 4913-4915). VERT ( n -- x y z ) reads bits 0/1/2 of a corner index as the X/Y/Z sign (+-CS from center), so all 8 cube corners come from one word. EDGE resolves both corners via VERT and calls LINE; CUBE is 12 EDGE calls (4 bottom, 4 top, 4 vertical). First item in the 4.3.3.x sequence with no new bug found -- a small signal that Q.TO-INT, the VARIABLE alignment fix, and the LINE-STUCK? cap were the real gaps rather than something still lurking in LINE/PROJECT/CART-Y. Verified live on amd64: a centered, half-size-100 cube renders correctly -- front/back face squares, back face offset diagonally up-right by exactly the 45-degree cavalier projection's depth term, all 12 edges connecting at the right corners. All three architectures boot clean to ok> with the DoE completing; dict_hash identical across all three and unchanged from 4.3.3a/4.3.3b. FABRIC.md item 4.3.4 marked done. This is the checkpoint -- 4.3.x groundwork stops here for review per this item's own acceptance criterion.
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