Robert Allan JamesandClaude Sonnet 5
4076a01c35
vm->heartbeat.tick_count (FORTH-dispatch counter) Captain Bob's law is unambiguous: the adaptive heartbeat is the one and only clock, full stop. The first cut of this word read the wrong counter under that name -- vm->heartbeat.tick_count is a colon-word- dispatch counter gated at a fixed cadence (frozen during idle, blind to per-dispatch CPU cost, see FABRIC-2.md Section Q). The real adaptive heartbeat is heartbeat_ticks() in src/starkernel/heartbeat.c, driven directly by the ISR-latched 100Hz hardware timer -- genuinely time-based, confirmed advancing during idle wall-clock time on all three architectures (amd64 4039->5510, aarch64 6126->7607, riscv64 2965->4466, each over ~15s idle). Kernel build only (__STARKERNEL__); hosted build has no ISR timer and keeps the old fallback. Three-arch QEMU acceptance: POST 1012/0/0 on each, word live-tested. 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