capsules/block-acl.4th (blocks 4019-4020, next free range per BLOCK_MAP.md): BLK-ACL-CHECK (block# -- allow?), a real fast-deny check mirroring vm.c:611-624's pattern for blocks instead of words. First touch lazily claims the block (allow=1, TTL=256, same base as ACL.4th's own), matching the word card's default-permissive baseline. Not a stub -- genuinely does something on every call. Loaded via a new EXEC line in init.4th right after ACL.4th's own; confirmed ACL.4th's own activation is unaffected. Passed mkcapsule --lint. Live-tested via QMP keystrokes: 1 BLK-ACL-CHECK executed cleanly. Phase 5 (BMAPFMT) is now fully complete -- field layout, flags bits, C accessors, FORTH wrappers, and a real policy word. Verified 3-arch boot to ok> (amd64/aarch64/riscv64). Co-Authored-By: Claude Opus 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